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<div class="subTitle">org.eclipse.january.dataset</div>
<h2 title="Class Maths" class="title">Class Maths</h2>
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<li>org.eclipse.january.dataset.internal.GeneratedMaths</li>
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<li>org.eclipse.january.dataset.Maths</li>
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<pre>public class <a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.27">Maths</a>
extends org.eclipse.january.dataset.internal.GeneratedMaths</pre>
<div class="block">Mathematics class</div>
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<h3>Constructor Summary</h3>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colOne" scope="col">Constructor and Description</th>
</tr>
<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#Maths()">Maths</a></strong>()</code>&nbsp;</td>
</tr>
</table>
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<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#abs(java.lang.Object)">abs</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a)</code>
<div class="block">abs - absolute value of each element</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#abs(java.lang.Object,%20org.eclipse.january.dataset.Dataset)">abs</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o)</code>
<div class="block">abs - absolute value of each element</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#add(java.util.Collection,%20boolean)">add</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/eclipse/january/dataset/IDataset.html" title="interface in org.eclipse.january.dataset">IDataset</a>&gt;&nbsp;sets,
boolean&nbsp;requireClone)</code>
<div class="block">Adds all sets passed in together
The first IDataset must cast to Dataset
For memory efficiency sake if add(...) is called with a set of size one,
no clone is done, the original object is returned directly.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#angle(java.lang.Object)">angle</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a)</code>
<div class="block">Create a dataset of the arguments from a complex dataset</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#angle(java.lang.Object,%20boolean)">angle</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
boolean&nbsp;inDegrees)</code>
<div class="block">Create a dataset of the arguments from a complex dataset</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#angle(java.lang.Object,%20boolean,%20org.eclipse.january.dataset.Dataset)">angle</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
boolean&nbsp;inDegrees,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o)</code>
<div class="block">Create a dataset of the arguments from a complex dataset</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#angle(java.lang.Object,%20org.eclipse.january.dataset.Dataset)">angle</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o)</code>
<div class="block">Create a dataset of the arguments from a complex dataset</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#arctan2(java.lang.Object,%20java.lang.Object)">arctan2</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;b)</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#arctan2(java.lang.Object,%20java.lang.Object,%20org.eclipse.january.dataset.Dataset)">arctan2</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;b,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#centralDifference(org.eclipse.january.dataset.Dataset,%20int)">centralDifference</a></strong>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;a,
int&nbsp;axis)</code>
<div class="block">Discrete difference of dataset along axis using finite central difference</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#conjugate(java.lang.Object)">conjugate</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#conjugate(java.lang.Object,%20org.eclipse.january.dataset.Dataset)">conjugate</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o)</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#derivative(org.eclipse.january.dataset.Dataset,%20org.eclipse.january.dataset.Dataset,%20int)">derivative</a></strong>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;x,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;y,
int&nbsp;n)</code>
<div class="block">Calculates the derivative of a line described by two datasets (x,y) given
a spread of n either side of the point</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#difference(org.eclipse.january.dataset.Dataset,%20int,%20int)">difference</a></strong>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;a,
int&nbsp;n,
int&nbsp;axis)</code>
<div class="block">Discrete difference of dataset along axis using finite difference</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#floorDivide(java.lang.Object,%20java.lang.Object)">floorDivide</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;b)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#floorDivide(java.lang.Object,%20java.lang.Object,%20org.eclipse.january.dataset.Dataset)">floorDivide</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;b,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o)</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#floorRemainder(java.lang.Object,%20java.lang.Object)">floorRemainder</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;b)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#floorRemainder(java.lang.Object,%20java.lang.Object,%20org.eclipse.january.dataset.Dataset)">floorRemainder</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;b,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o)</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#getBilinear(double[],%20org.eclipse.january.dataset.CompoundDataset,%20double,%20double)">getBilinear</a></strong>(double[]&nbsp;values,
<a href="../../../../org/eclipse/january/dataset/CompoundDataset.html" title="interface in org.eclipse.january.dataset">CompoundDataset</a>&nbsp;d,
double&nbsp;x0,
double&nbsp;x1)</code>
<div class="block"><strong>Deprecated.</strong>&nbsp;
<div class="block"><i>Use
<a href="../../../../org/eclipse/january/dataset/Maths.html#interpolate(double[],%20org.eclipse.january.dataset.CompoundDataset,%20double,%20double)"><code>interpolate(double[], CompoundDataset, double, double)</code></a></i></div>
</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#getBilinear(org.eclipse.january.dataset.IDataset,%20double,%20double)">getBilinear</a></strong>(<a href="../../../../org/eclipse/january/dataset/IDataset.html" title="interface in org.eclipse.january.dataset">IDataset</a>&nbsp;d,
double&nbsp;x0,
double&nbsp;x1)</code>
<div class="block"><strong>Deprecated.</strong>&nbsp;
<div class="block"><i>Use <a href="../../../../org/eclipse/january/dataset/Maths.html#interpolate(org.eclipse.january.dataset.Dataset,%20double,%20double)"><code>interpolate(Dataset, double, double)</code></a></i></div>
</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#getBilinear(org.eclipse.january.dataset.IDataset,%20org.eclipse.january.dataset.IDataset,%20double,%20double)">getBilinear</a></strong>(<a href="../../../../org/eclipse/january/dataset/IDataset.html" title="interface in org.eclipse.january.dataset">IDataset</a>&nbsp;d,
<a href="../../../../org/eclipse/january/dataset/IDataset.html" title="interface in org.eclipse.january.dataset">IDataset</a>&nbsp;m,
double&nbsp;x0,
double&nbsp;x1)</code>
<div class="block"><strong>Deprecated.</strong>&nbsp;
<div class="block"><i>Use <a href="../../../../org/eclipse/january/dataset/Maths.html#interpolate(org.eclipse.january.dataset.Dataset,%20org.eclipse.january.dataset.Dataset,%20double,%20double)"><code>interpolate(Dataset, Dataset, double, double)</code></a></i></div>
</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#getLinear(double[],%20org.eclipse.january.dataset.CompoundDataset,%20double)">getLinear</a></strong>(double[]&nbsp;values,
<a href="../../../../org/eclipse/january/dataset/CompoundDataset.html" title="interface in org.eclipse.january.dataset">CompoundDataset</a>&nbsp;d,
double&nbsp;x0)</code>
<div class="block"><strong>Deprecated.</strong>&nbsp;
<div class="block"><i>Use <a href="../../../../org/eclipse/january/dataset/Maths.html#interpolate(double[],%20org.eclipse.january.dataset.CompoundDataset,%20double)"><code>interpolate(double[], CompoundDataset, double)</code></a></i></div>
</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#getLinear(org.eclipse.january.dataset.IDataset,%20double)">getLinear</a></strong>(<a href="../../../../org/eclipse/january/dataset/IDataset.html" title="interface in org.eclipse.january.dataset">IDataset</a>&nbsp;d,
double&nbsp;x0)</code>
<div class="block"><strong>Deprecated.</strong>&nbsp;
<div class="block"><i>Use <a href="../../../../org/eclipse/january/dataset/Maths.html#interpolate(org.eclipse.january.dataset.Dataset,%20double)"><code>interpolate(Dataset, double)</code></a></i></div>
</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&gt;</code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#gradient(org.eclipse.january.dataset.Dataset,%20org.eclipse.january.dataset.Dataset...)">gradient</a></strong>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;y,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>...&nbsp;x)</code>
<div class="block">Calculate gradient (or partial derivatives) by central difference</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#hypot(java.lang.Object,%20java.lang.Object)">hypot</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;b)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#hypot(java.lang.Object,%20java.lang.Object,%20org.eclipse.january.dataset.Dataset)">hypot</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;b,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o)</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#interpolate(org.eclipse.january.dataset.Dataset,%20org.eclipse.january.dataset.Dataset,%20double...)">interpolate</a></strong>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;d,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;m,
double...&nbsp;x)</code>
<div class="block">Linearly interpolate a value at a point in a n-D dataset with a mask.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#interpolate(org.eclipse.january.dataset.Dataset,%20org.eclipse.january.dataset.Dataset,%20double)">interpolate</a></strong>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;d,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;m,
double&nbsp;x0)</code>
<div class="block">Linearly interpolate a value at a point in a 1D dataset with a mask.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#interpolate(org.eclipse.january.dataset.Dataset,%20org.eclipse.january.dataset.Dataset,%20double,%20double)">interpolate</a></strong>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;d,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;m,
double&nbsp;x0,
double&nbsp;x1)</code>
<div class="block">Linearly interpolate a value at a point in a 2D dataset with a mask.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#interpolate(org.eclipse.january.dataset.Dataset,%20org.eclipse.january.dataset.Dataset,%20org.eclipse.january.dataset.IDataset,%20java.lang.Number,%20java.lang.Number)">interpolate</a></strong>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;x,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;d,
<a href="../../../../org/eclipse/january/dataset/IDataset.html" title="interface in org.eclipse.january.dataset">IDataset</a>&nbsp;x0,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Number.html?is-external=true" title="class or interface in java.lang">Number</a>&nbsp;left,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Number.html?is-external=true" title="class or interface in java.lang">Number</a>&nbsp;right)</code>
<div class="block">Linearly interpolate values at points in a 1D dataset corresponding to
given coordinates.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#interpolate(org.eclipse.january.dataset.Dataset,%20double...)">interpolate</a></strong>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;d,
double...&nbsp;x)</code>
<div class="block">Linearly interpolate a value at a point in a n-D dataset.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#interpolate(org.eclipse.january.dataset.Dataset,%20double)">interpolate</a></strong>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;d,
double&nbsp;x0)</code>
<div class="block">Linearly interpolate a value at a point in a 1D dataset.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static double</code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#interpolate(org.eclipse.january.dataset.Dataset,%20double,%20double)">interpolate</a></strong>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;d,
double&nbsp;x0,
double&nbsp;x1)</code>
<div class="block">Linearly interpolate a value at a point in a 2D dataset.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#interpolate(double[],%20org.eclipse.january.dataset.CompoundDataset,%20double...)">interpolate</a></strong>(double[]&nbsp;values,
<a href="../../../../org/eclipse/january/dataset/CompoundDataset.html" title="interface in org.eclipse.january.dataset">CompoundDataset</a>&nbsp;d,
double...&nbsp;x)</code>
<div class="block">Linearly interpolate an array of values at a point in a compound n-D
dataset.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#interpolate(double[],%20org.eclipse.january.dataset.CompoundDataset,%20double)">interpolate</a></strong>(double[]&nbsp;values,
<a href="../../../../org/eclipse/january/dataset/CompoundDataset.html" title="interface in org.eclipse.january.dataset">CompoundDataset</a>&nbsp;d,
double&nbsp;x0)</code>
<div class="block">Linearly interpolate an array of values at a point in a compound 1D
dataset.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#interpolate(double[],%20org.eclipse.january.dataset.CompoundDataset,%20double,%20double)">interpolate</a></strong>(double[]&nbsp;values,
<a href="../../../../org/eclipse/january/dataset/CompoundDataset.html" title="interface in org.eclipse.january.dataset">CompoundDataset</a>&nbsp;d,
double&nbsp;x0,
double&nbsp;x1)</code>
<div class="block">Linearly interpolate an array of values at a point in a compound 2D
dataset.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#multiply(java.util.Collection,%20boolean)">multiply</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/eclipse/january/dataset/IDataset.html" title="interface in org.eclipse.january.dataset">IDataset</a>&gt;&nbsp;sets,
boolean&nbsp;requireClone)</code>
<div class="block">Multiplies all sets passed in together
The first IDataset must cast to Dataset</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#phaseAsComplexNumber(java.lang.Object,%20boolean)">phaseAsComplexNumber</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
boolean&nbsp;keepZeros)</code>
<div class="block">Create a phase only dataset.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#phaseAsComplexNumber(java.lang.Object,%20org.eclipse.january.dataset.Dataset,%20boolean)">phaseAsComplexNumber</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o,
boolean&nbsp;keepZeros)</code>
<div class="block">Create a phase only dataset.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#reciprocal(java.lang.Object)">reciprocal</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a)</code>
<div class="block">Find reciprocal from dataset</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#reciprocal(java.lang.Object,%20org.eclipse.january.dataset.Dataset)">reciprocal</a></strong>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o)</code>
<div class="block">Find reciprocal from dataset</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#unwrap(org.eclipse.january.dataset.Dataset,%20java.lang.Object...)">unwrap</a></strong>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>...&nbsp;a)</code>
<div class="block">Unwrap result from mathematical methods if necessary</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#unwrap(org.eclipse.january.dataset.Dataset,%20java.lang.Object)">unwrap</a></strong>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a)</code>
<div class="block">Unwrap result from mathematical methods if necessary</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></td>
<td class="colLast"><code><strong><a href="../../../../org/eclipse/january/dataset/Maths.html#unwrap(org.eclipse.january.dataset.Dataset,%20java.lang.Object,%20java.lang.Object)">unwrap</a></strong>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;b)</code>
<div class="block">Unwrap result from mathematical methods if necessary</div>
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<h3>Methods inherited from class&nbsp;org.eclipse.january.dataset.internal.GeneratedMaths</h3>
<code>add, add, addBinaryOperatorName, addFunctionName, addFunctionName, arccos, arccos, arccosh, arccosh, arcsin, arcsin, arcsinh, arcsinh, arctan, arctan, arctanh, arctanh, bitwiseAnd, bitwiseAnd, bitwiseInvert, bitwiseInvert, bitwiseOr, bitwiseOr, bitwiseXor, bitwiseXor, cbrt, cbrt, ceil, ceil, clip, clip, cos, cos, cosh, cosh, divide, divide, divideTowardsFloor, divideTowardsFloor, dividez, dividez, exp, exp, expm1, expm1, floor, floor, leftShift, leftShift, log, log, log10, log10, log1p, log1p, log2, log2, maximum, maximum, minimum, minimum, multiply, multiply, negative, negative, power, power, remainder, remainder, rightShift, rightShift, rint, rint, signum, signum, sin, sin, sinh, sinh, sqrt, sqrt, square, square, subtract, subtract, tan, tan, tanh, tanh, toDegrees, toDegrees, toLong, toRadians, toRadians, truncate, truncate, unsignedRightShift, unsignedRightShift</code></li>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long,%20int)" title="class or interface in java.lang">wait</a></code></li>
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<h3>Constructor Detail</h3>
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<h4>Maths</h4>
<pre>public&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.27">Maths</a>()</pre>
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<a name="unwrap(org.eclipse.january.dataset.Dataset, java.lang.Object)">
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<h4>unwrap</h4>
<pre>public static&nbsp;<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.35">unwrap</a>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a)</pre>
<div class="block">Unwrap result from mathematical methods if necessary</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>o</code> - </dd><dd><code>a</code> - </dd>
<dt><span class="strong">Returns:</span></dt><dd>a dataset if a is a dataset or an object of the same class as o</dd></dl>
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<h4>unwrap</h4>
<pre>public static&nbsp;<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.47">unwrap</a>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;b)</pre>
<div class="block">Unwrap result from mathematical methods if necessary</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>o</code> - </dd><dd><code>a</code> - </dd>
<dt><span class="strong">Returns:</span></dt><dd>a dataset if either a and b are datasets or an object of the same
class as o</dd></dl>
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<h4>unwrap</h4>
<pre>public static&nbsp;<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.59">unwrap</a>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>...&nbsp;a)</pre>
<div class="block">Unwrap result from mathematical methods if necessary</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>o</code> - </dd><dd><code>a</code> - </dd>
<dt><span class="strong">Returns:</span></dt><dd>a dataset if any inputs are datasets or an object of the same
class as o</dd></dl>
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<a name="floorDivide(java.lang.Object, java.lang.Object)">
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<h4>floorDivide</h4>
<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.75">floorDivide</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;b)</pre>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - </dd><dd><code>b</code> - </dd>
<dt><span class="strong">Returns:</span></dt><dd>floor divide of a and b</dd></dl>
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<h4>floorDivide</h4>
<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.86">floorDivide</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;b,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o)</pre>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - </dd><dd><code>b</code> - </dd><dd><code>o</code> - output can be null - in which case, a new dataset is created</dd>
<dt><span class="strong">Returns:</span></dt><dd>floor divide of a and b</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.95">floorRemainder</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;b)</pre>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - </dd><dd><code>b</code> - </dd>
<dt><span class="strong">Returns:</span></dt><dd>floor remainder of a and b</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.106">floorRemainder</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;b,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o)</pre>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - </dd><dd><code>b</code> - </dd><dd><code>o</code> - output can be null - in which case, a new dataset is created</dd>
<dt><span class="strong">Returns:</span></dt><dd>floor remainder of a and b</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.120">reciprocal</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a)</pre>
<div class="block">Find reciprocal from dataset</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - </dd>
<dt><span class="strong">Returns:</span></dt><dd>reciprocal dataset</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.132">reciprocal</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o)</pre>
<div class="block">Find reciprocal from dataset</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - </dd><dd><code>o</code> - output can be null - in which case, a new dataset is created</dd>
<dt><span class="strong">Returns:</span></dt><dd>reciprocal dataset</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.143">abs</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a)</pre>
<div class="block">abs - absolute value of each element</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - </dd>
<dt><span class="strong">Returns:</span></dt><dd>dataset</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.155">abs</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o)</pre>
<div class="block">abs - absolute value of each element</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - </dd><dd><code>o</code> - output can be null - in which case, a new dataset is created</dd>
<dt><span class="strong">Returns:</span></dt><dd>dataset</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.411">conjugate</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a)</pre>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - </dd>
<dt><span class="strong">Returns:</span></dt><dd>a^*, complex conjugate of a</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.421">conjugate</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o)</pre>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - </dd><dd><code>o</code> - output can be null - in which case, a new dataset is created</dd>
<dt><span class="strong">Returns:</span></dt><dd>a^*, complex conjugate of a</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.462">hypot</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;b)</pre>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - side of right-angled triangle</dd><dd><code>b</code> - side of right-angled triangle</dd>
<dt><span class="strong">Returns:</span></dt><dd>hypotenuse of right-angled triangle: sqrt(a^2 + a^2)</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.475">hypot</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;b,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o)</pre>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - side of right-angled triangle</dd><dd><code>b</code> - side of right-angled triangle</dd><dd><code>o</code> - output can be null - in which case, a new dataset is created</dd>
<dt><span class="strong">Returns:</span></dt><dd>hypotenuse of right-angled triangle: sqrt(a^2 + a^2)</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.744">arctan2</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;b)</pre>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - opposite side of right-angled triangle</dd><dd><code>b</code> - adjacent side of right-angled triangle</dd>
<dt><span class="strong">Returns:</span></dt><dd>angle of triangle: atan(b/a)</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.757">arctan2</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;b,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o)</pre>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - opposite side of right-angled triangle</dd><dd><code>b</code> - adjacent side of right-angled triangle</dd><dd><code>o</code> - output can be null - in which case, a new dataset is created</dd>
<dt><span class="strong">Returns:</span></dt><dd>angle of triangle: atan(b/a)</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.1025">angle</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a)</pre>
<div class="block">Create a dataset of the arguments from a complex dataset</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - </dd>
<dt><span class="strong">Returns:</span></dt><dd>dataset of angles in radians</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.1037">angle</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
boolean&nbsp;inDegrees)</pre>
<div class="block">Create a dataset of the arguments from a complex dataset</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - </dd><dd><code>inDegrees</code> - if true then return angles in degrees else in radians</dd>
<dt><span class="strong">Returns:</span></dt><dd>dataset of angles</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.1049">angle</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o)</pre>
<div class="block">Create a dataset of the arguments from a complex dataset</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - </dd><dd><code>o</code> - output can be null - in which case, a new dataset is created</dd>
<dt><span class="strong">Returns:</span></dt><dd>dataset of angles in radians</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.1063">angle</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
boolean&nbsp;inDegrees,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o)</pre>
<div class="block">Create a dataset of the arguments from a complex dataset</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - </dd><dd><code>inDegrees</code> - if true then return angles in degrees else in radians</dd><dd><code>o</code> - output can be null - in which case, a new dataset is created</dd>
<dt><span class="strong">Returns:</span></dt><dd>dataset of angles</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.1337">phaseAsComplexNumber</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
boolean&nbsp;keepZeros)</pre>
<div class="block">Create a phase only dataset. NB it will contain NaNs if there are any
items with zero amplitude</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - dataset</dd><dd><code>keepZeros</code> - if true then zero items are returned as zero rather than NaNs</dd>
<dt><span class="strong">Returns:</span></dt><dd>complex dataset where items have unit amplitude</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.1353">phaseAsComplexNumber</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;a,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;o,
boolean&nbsp;keepZeros)</pre>
<div class="block">Create a phase only dataset. NB it will contain NaNs if there are any
items with zero amplitude</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - dataset</dd><dd><code>o</code> - output can be null - in which case, a new dataset is created</dd><dd><code>keepZeros</code> - if true then zero items are returned as zero rather than NaNs</dd>
<dt><span class="strong">Returns:</span></dt><dd>complex dataset where items have unit amplitude</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.1439">add</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/eclipse/january/dataset/IDataset.html" title="interface in org.eclipse.january.dataset">IDataset</a>&gt;&nbsp;sets,
boolean&nbsp;requireClone)</pre>
<div class="block">Adds all sets passed in together
The first IDataset must cast to Dataset
For memory efficiency sake if add(...) is called with a set of size one,
no clone is done, the original object is returned directly. Otherwise a
new data set is returned, the sum of those passed in.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>sets</code> - </dd><dd><code>requireClone</code> - </dd>
<dt><span class="strong">Returns:</span></dt><dd>sum of collection</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.1464">multiply</a>(<a href="https://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../org/eclipse/january/dataset/IDataset.html" title="interface in org.eclipse.january.dataset">IDataset</a>&gt;&nbsp;sets,
boolean&nbsp;requireClone)</pre>
<div class="block">Multiplies all sets passed in together
The first IDataset must cast to Dataset</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>sets</code> - </dd><dd><code>requireClone</code> - </dd>
<dt><span class="strong">Returns:</span></dt><dd>product of collection</dd></dl>
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.1497">interpolate</a>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;x,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;d,
<a href="../../../../org/eclipse/january/dataset/IDataset.html" title="interface in org.eclipse.january.dataset">IDataset</a>&nbsp;x0,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Number.html?is-external=true" title="class or interface in java.lang">Number</a>&nbsp;left,
<a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Number.html?is-external=true" title="class or interface in java.lang">Number</a>&nbsp;right)</pre>
<div class="block">Linearly interpolate values at points in a 1D dataset corresponding to
given coordinates.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>x</code> - input 1-D coordinate dataset (must be ordered)</dd><dd><code>d</code> - input 1-D dataset</dd><dd><code>x0</code> - coordinate values</dd><dd><code>left</code> - value to use when x0 lies left of domain. If null, then
interpolate to zero by using leftmost interval</dd><dd><code>right</code> - value to use when x0 lies right of domain. If null, then
interpolate to zero by using rightmost interval</dd>
<dt><span class="strong">Returns:</span></dt><dd>interpolated values</dd></dl>
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<pre>public static&nbsp;double&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.1581">interpolate</a>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;d,
double&nbsp;x0)</pre>
<div class="block">Linearly interpolate a value at a point in a 1D dataset. The dataset is
considered to have zero support outside its bounds. Thus points just
outside are interpolated from the boundary value to zero.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>d</code> - input dataset</dd><dd><code>x0</code> - coordinate</dd>
<dt><span class="strong">Returns:</span></dt><dd>interpolated value</dd></dl>
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<pre>public static&nbsp;double&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.1614">interpolate</a>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;d,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;m,
double&nbsp;x0)</pre>
<div class="block">Linearly interpolate a value at a point in a 1D dataset with a mask. The
dataset is considered to have zero support outside its bounds. Thus
points just outside are interpolated from the boundary value to zero.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>d</code> - input dataset</dd><dd><code>m</code> - mask dataset</dd><dd><code>x0</code> - coordinate</dd>
<dt><span class="strong">Returns:</span></dt><dd>interpolated value</dd></dl>
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<pre>public static&nbsp;void&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.1648">interpolate</a>(double[]&nbsp;values,
<a href="../../../../org/eclipse/january/dataset/CompoundDataset.html" title="interface in org.eclipse.january.dataset">CompoundDataset</a>&nbsp;d,
double&nbsp;x0)</pre>
<div class="block">Linearly interpolate an array of values at a point in a compound 1D
dataset. The dataset is considered to have zero support outside its
bounds. Thus points just outside are interpolated from the boundary value
to zero.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>values</code> - interpolated array</dd><dd><code>d</code> - input dataset</dd><dd><code>x0</code> - coordinate</dd></dl>
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<pre>public static&nbsp;double&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.1699">interpolate</a>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;d,
double&nbsp;x0,
double&nbsp;x1)</pre>
<div class="block">Linearly interpolate a value at a point in a 2D dataset. The dataset is
considered to have zero support outside its bounds. Thus points just
outside are interpolated from the boundary value to zero.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>d</code> - input dataset</dd><dd><code>x0</code> - coordinate</dd><dd><code>x1</code> - coordinate</dd>
<dt><span class="strong">Returns:</span></dt><dd>bilinear interpolation</dd></dl>
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<pre>public static&nbsp;double&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.1763">interpolate</a>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;d,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;m,
double&nbsp;x0,
double&nbsp;x1)</pre>
<div class="block">Linearly interpolate a value at a point in a 2D dataset with a mask. The
dataset is considered to have zero support outside its bounds. Thus
points just outside are interpolated from the boundary value to zero.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>d</code> - input dataset</dd><dd><code>m</code> - mask dataset</dd><dd><code>x0</code> - coordinate</dd><dd><code>x1</code> - coordinate</dd>
<dt><span class="strong">Returns:</span></dt><dd>bilinear interpolation</dd></dl>
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<pre>public static&nbsp;void&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.1823">interpolate</a>(double[]&nbsp;values,
<a href="../../../../org/eclipse/january/dataset/CompoundDataset.html" title="interface in org.eclipse.january.dataset">CompoundDataset</a>&nbsp;d,
double&nbsp;x0,
double&nbsp;x1)</pre>
<div class="block">Linearly interpolate an array of values at a point in a compound 2D
dataset. The dataset is considered to have zero support outside its
bounds. Thus points just outside are interpolated from the boundary value
to zero.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>values</code> - bilinear interpolated array</dd><dd><code>d</code> - </dd><dd><code>x0</code> - </dd><dd><code>x1</code> - </dd></dl>
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<h4>interpolate</h4>
<pre>public static&nbsp;double&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.1904">interpolate</a>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;d,
double...&nbsp;x)</pre>
<div class="block">Linearly interpolate a value at a point in a n-D dataset. The dataset is
considered to have zero support outside its bounds. Thus points just
outside are interpolated from the boundary value to zero. The number of
coordinates must match the rank of the dataset.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>d</code> - input dataset</dd><dd><code>x</code> - coordinates</dd>
<dt><span class="strong">Returns:</span></dt><dd>interpolated value</dd></dl>
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<h4>interpolate</h4>
<pre>public static&nbsp;double&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.1922">interpolate</a>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;d,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;m,
double...&nbsp;x)</pre>
<div class="block">Linearly interpolate a value at a point in a n-D dataset with a mask. The
dataset is considered to have zero support outside its bounds. Thus
points just outside are interpolated from the boundary value to zero. The
number of coordinates must match the rank of the dataset.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>d</code> - input dataset</dd><dd><code>m</code> - mask dataset (can be null)</dd><dd><code>x</code> - coordinates</dd>
<dt><span class="strong">Returns:</span></dt><dd>interpolated value</dd></dl>
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<h4>interpolate</h4>
<pre>public static&nbsp;void&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.2018">interpolate</a>(double[]&nbsp;values,
<a href="../../../../org/eclipse/january/dataset/CompoundDataset.html" title="interface in org.eclipse.january.dataset">CompoundDataset</a>&nbsp;d,
double...&nbsp;x)</pre>
<div class="block">Linearly interpolate an array of values at a point in a compound n-D
dataset. The dataset is considered to have zero support outside its
bounds. Thus points just outside are interpolated from the boundary value
to zero.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>values</code> - linearly interpolated array</dd><dd><code>d</code> - </dd><dd><code>x</code> - </dd></dl>
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<h4>getLinear</h4>
<pre><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public static&nbsp;double&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.2108">getLinear</a>(<a href="../../../../org/eclipse/january/dataset/IDataset.html" title="interface in org.eclipse.january.dataset">IDataset</a>&nbsp;d,
double&nbsp;x0)</pre>
<div class="block"><span class="strong">Deprecated.</span>&nbsp;<i>Use <a href="../../../../org/eclipse/january/dataset/Maths.html#interpolate(org.eclipse.january.dataset.Dataset,%20double)"><code>interpolate(Dataset, double)</code></a></i></div>
<div class="block">Linearly interpolate a value at a point in a 1D dataset. The dataset is
considered to have zero support outside its bounds. Thus points just
outside are interpolated from the boundary value to zero.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>d</code> - input dataset</dd><dd><code>x0</code> - coordinate</dd>
<dt><span class="strong">Returns:</span></dt><dd>interpolated value</dd></dl>
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<h4>getLinear</h4>
<pre><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public static&nbsp;void&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.2126">getLinear</a>(double[]&nbsp;values,
<a href="../../../../org/eclipse/january/dataset/CompoundDataset.html" title="interface in org.eclipse.january.dataset">CompoundDataset</a>&nbsp;d,
double&nbsp;x0)</pre>
<div class="block"><span class="strong">Deprecated.</span>&nbsp;<i>Use <a href="../../../../org/eclipse/january/dataset/Maths.html#interpolate(double[],%20org.eclipse.january.dataset.CompoundDataset,%20double)"><code>interpolate(double[], CompoundDataset, double)</code></a></i></div>
<div class="block">Linearly interpolate a value at a point in a compound 1D dataset. The
dataset is considered to have zero support outside its bounds. Thus
points just outside are interpolated from the boundary value to zero.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>values</code> - interpolated array</dd><dd><code>d</code> - input dataset</dd><dd><code>x0</code> - coordinate</dd></dl>
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<h4>getBilinear</h4>
<pre><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public static&nbsp;double&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.2143">getBilinear</a>(<a href="../../../../org/eclipse/january/dataset/IDataset.html" title="interface in org.eclipse.january.dataset">IDataset</a>&nbsp;d,
double&nbsp;x0,
double&nbsp;x1)</pre>
<div class="block"><span class="strong">Deprecated.</span>&nbsp;<i>Use <a href="../../../../org/eclipse/january/dataset/Maths.html#interpolate(org.eclipse.january.dataset.Dataset,%20double,%20double)"><code>interpolate(Dataset, double, double)</code></a></i></div>
<div class="block">Interpolated a value from 2D dataset</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>d</code> - input dataset</dd><dd><code>x0</code> - coordinate</dd><dd><code>x1</code> - coordinate</dd>
<dt><span class="strong">Returns:</span></dt><dd>bilinear interpolation</dd></dl>
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<pre><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public static&nbsp;double&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.2162">getBilinear</a>(<a href="../../../../org/eclipse/january/dataset/IDataset.html" title="interface in org.eclipse.january.dataset">IDataset</a>&nbsp;d,
<a href="../../../../org/eclipse/january/dataset/IDataset.html" title="interface in org.eclipse.january.dataset">IDataset</a>&nbsp;m,
double&nbsp;x0,
double&nbsp;x1)</pre>
<div class="block"><span class="strong">Deprecated.</span>&nbsp;<i>Use <a href="../../../../org/eclipse/january/dataset/Maths.html#interpolate(org.eclipse.january.dataset.Dataset,%20org.eclipse.january.dataset.Dataset,%20double,%20double)"><code>interpolate(Dataset, Dataset, double, double)</code></a></i></div>
<div class="block">Interpolated a value from 2D dataset with mask</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>d</code> - input dataset</dd><dd><code>m</code> - mask dataset</dd><dd><code>x0</code> - coordinate</dd><dd><code>x1</code> - coordinate</dd>
<dt><span class="strong">Returns:</span></dt><dd>bilinear interpolation</dd></dl>
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<pre><a href="https://docs.oracle.com/javase/7/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public static&nbsp;void&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.2178">getBilinear</a>(double[]&nbsp;values,
<a href="../../../../org/eclipse/january/dataset/CompoundDataset.html" title="interface in org.eclipse.january.dataset">CompoundDataset</a>&nbsp;d,
double&nbsp;x0,
double&nbsp;x1)</pre>
<div class="block"><span class="strong">Deprecated.</span>&nbsp;<i>Use
<a href="../../../../org/eclipse/january/dataset/Maths.html#interpolate(double[],%20org.eclipse.january.dataset.CompoundDataset,%20double,%20double)"><code>interpolate(double[], CompoundDataset, double, double)</code></a></i></div>
<div class="block">Interpolated a value from 2D compound dataset</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>values</code> - bilinear interpolated array</dd><dd><code>d</code> - </dd><dd><code>x0</code> - </dd><dd><code>x1</code> - </dd></dl>
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<a name="difference(org.eclipse.january.dataset.Dataset, int, int)">
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<h4>difference</h4>
<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.2632">difference</a>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;a,
int&nbsp;n,
int&nbsp;axis)</pre>
<div class="block">Discrete difference of dataset along axis using finite difference</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - </dd><dd><code>n</code> - order of difference</dd><dd><code>axis</code> - </dd>
<dt><span class="strong">Returns:</span></dt><dd>difference</dd></dl>
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<h4>derivative</h4>
<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.2731">derivative</a>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;x,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;y,
int&nbsp;n)</pre>
<div class="block">Calculates the derivative of a line described by two datasets (x,y) given
a spread of n either side of the point</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>x</code> - The x values of the function to take the derivative of.</dd><dd><code>y</code> - The y values of the function to take the derivative of.</dd><dd><code>n</code> - The spread the derivative is calculated from, i.e. the
smoothing, the higher the value, the more smoothing occurs.</dd>
<dt><span class="strong">Returns:</span></dt><dd>A dataset which contains all the derivative point for point.</dd></dl>
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<a name="centralDifference(org.eclipse.january.dataset.Dataset, int)">
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<pre>public static&nbsp;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.2808">centralDifference</a>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;a,
int&nbsp;axis)</pre>
<div class="block">Discrete difference of dataset along axis using finite central difference</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>a</code> - </dd><dd><code>axis</code> - </dd>
<dt><span class="strong">Returns:</span></dt><dd>difference</dd></dl>
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<h4>gradient</h4>
<pre>public static&nbsp;<a href="https://docs.oracle.com/javase/7/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&gt;&nbsp;<a href="../../../../src-html/org/eclipse/january/dataset/Maths.html#line.3085">gradient</a>(<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>&nbsp;y,
<a href="../../../../org/eclipse/january/dataset/Dataset.html" title="interface in org.eclipse.january.dataset">Dataset</a>...&nbsp;x)</pre>
<div class="block">Calculate gradient (or partial derivatives) by central difference</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>y</code> - </dd><dd><code>x</code> - one or more datasets for dependent variables</dd>
<dt><span class="strong">Returns:</span></dt><dd>a list of datasets (one for each dimension in y)</dd></dl>
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