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| <title>Map Data Management</title> |
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| <h1>Map Data Management</h1> |
| <p>The Map Data Management preferences page sets preferences for |
| managing the latitude/longitude data that defines the borders of |
| geographic polygons.</p> |
| <ul> |
| <li><em> "Down sample latitude/longitude polygons."</em> If True, |
| then the full resolution polygon data will be "sampled" by skipping |
| over data points in the polygons (as specified in the sample frequency) |
| (Default: False)</li> |
| <li><em> "latitude/longitude data sample frequency."</em>The |
| number of lat/long data points to skip when sampling the full |
| resolution data. (Default: 1)</li> |
| <li><em> "Report I/O Exceptions."</em> If True, then an error in |
| reading in the lat/long data for a country will be reported. Typically, |
| this is False as there are a few countries where the lat/long data is |
| missing and this can be ignored. (Default: False)</li> |
| <li><em> "Use lower resolution lat/long data if available" </em>If |
| True, then the geographic visualizations will favor the use of |
| pre-computed lower resolution data sets instead of more detailed |
| resolution data. This can result in faster visualization performance |
| with the potential for slight visual defects. In practice, the visual |
| impact is undetectable while the increase in performance is dramatic. |
| (Default: True)</li> |
| </ul> |
| <img src="img/preferencesmapdatamgnt.jpg" /> |
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