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| <h1>Random Graph Generation</h1> |
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| <p>If you need to quickly create random graphs in <code>.elkt</code> or <code>.elkg</code> format, you can use our random graph creation DSL. This way you can save, store, comment and diff your random graph configurations easily!</p> |
| <p>To get started, create a file with the file ending <code>.elkr</code>. Now Eclipse will offer the usual features you know and love, such as code completion, syntax highlighting and validation. So remember Eclipse rule number 1: Ctrl+Space is your friend!</p> |
| <p>Now let’s generate some random graphs. The following configuration would generates 5 trees and two graphs using the default predefined values:</p> |
| <pre><code>generate 5 trees |
| generate 2 graphs |
| </code></pre><p>Right-clicking the saved file in the package explorer and choosing <em>Generate Random Graphs</em> will result in seven graph files to be created. You can further specify how the graphs are created. For example:</p> |
| <pre><code>generate 2 graphs { |
| // Gaussian distribution: mean +/- standard deviation |
| nodes = 20 +/- 5 { |
| // With ports and extra options block |
| ports { |
| // Set port constraint to fixed order |
| constraint = order |
| |
| // Equal distribution: min to max. Re-use 30% |
| // to 40% of ports, i.e. different edges exit |
| // or enter same port |
| re-use = 0.3 to 0.4 |
| } |
| |
| // Generate node labels |
| labels |
| } |
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| // Relative to the number of nodes |
| edges relative = 0.5 to 1.5 { |
| // Allow self loops |
| self loops |
| } |
| |
| filename = "whatABeautifulGraph" |
| } |
| </code></pre><p>There are a lot more options to be found. Again, use Ctrl-Space to find out more.</p> |
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