Robot Painter
This example shows a rainbow-colored histogram that continuously smooths and refines its shape over time. The visualization animates a blurred density curve of 300 random points across 500 bins, with each frame redrawing the area path in a translucent stroke that shifts hue from blue through the spectrum. The code uses D3 v4’s `d3.histogram`, `d3.area`, `d3.scaleLinear`, and `d3.timer`, rendering to two stacked Canvas elements for layered accumulation. Each timer tick applies a simple blur by averaging neighboring bin densities, and the stroke’s opacity fades as elapsed time increases.
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forked from <a href='http://bl.ocks.org/curran/'>curran</a>'s block: <a href='http://bl.ocks.org/curran/853fa00b8f0732fb2bee7fccfd7b4523'>Histogram Smoothing</a>
forked from <a href='http://bl.ocks.org/curran/'>curran</a>'s block: <a href='http://bl.ocks.org/curran/5a916bd8381260412978c748ed685106'>Robot Painter</a>