d3 and canvas

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Last edited Jan 2, 2019

Created on Dec 30, 2018

This example demonstrates how to bind data to custom virtual elements and draw them to an HTML5 canvas using d3.v4. It renders a colorful grid of rectangles, where each cell’s size and fill style are animated via transitions. The code uses `d3.select` to append a canvas, `d3.range` to generate data, and `d3.scaleSequential` with `d3.interpolateSpectral` for color mapping. A `d3.timer` drives repeated canvas redraws, while the `draw()` function reads each custom element’s attributes (x, y, width, height, fillStyle) to paint the scene.

AI-generated description

Part 1 of a little d3 canvas tutorial - how to bind data and draw it to canvas

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forked from <a href='http://bl.ocks.org/larsvers/'>larsvers</a>'s block: <a href='http://bl.ocks.org/larsvers/d187337850d58a444082841c739985ca'>d3 canvas tutorial - bind and draw</a>

mit Licensed

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