Test that creates a random set of points distributed *near* the locus * of the [Lamniscate of * Gerono](https://en.wikipedia.org/wiki/Lemniscate_of_Gerono) and trains an SOM * that finds that circular pattern. The following * [CSV](https://en.wikipedia.org/wiki/Comma-separated_values) files are created * to validate the execution: * * `test2.csv`: random test samples points with a lamniscate
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