Heat Map

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Last edited Dec 21, 2022

Created on Dec 21, 2022

This heat map visualizes a sequential color scale transitioning from purple to orange across a continuous spectrum. The view fills the browser window with 100 vertical rectangular bands, each colored via the `d3.scaleSequential` interpolator. The code uses `d3.interpolate` to blend the two colors, `d3.scaleLinear` for positioning, and SVG `<rect>` elements rendered with D3 v7. The example demonstrates how to construct a full-viewport gradient bar for quantitative data mapping.

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A bare minimum HTML page demonstrating use of CSS and JavaScript.

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