node-d3-contour - 1.3.2-8 main

This module computes contour polygons by applying marching squares to a
rectangular array of numeric values.
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Contour polygons are GeoJSON, you can transform and display them using
standard tools. Contour plots can also visualize continuous functions by
sampling.
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Contours can also show the estimated density of point clouds, which is
especially useful to avoid overplotting in large datasets. This library
implements fast two-dimensional kernel density estimation.
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Node.js is an event-based server-side JavaScript engine.