function ramp(color, n = 256) {
const canvas = DOM.canvas(n, 1);
const context = canvas.getContext("2d");
canvas.style.margin = "0 -14px";
canvas.style.width = "calc(100% + 28px)";
canvas.style.height = "40px";
canvas.style.imageRendering = "pixelated";
for (let i = 0; i < n; ++i) {
context.fillStyle = color(i / (n - 1));
context.fillRect(i, 0, 1, 1);
}
return canvas;
}
disc((r,t) => `hsl(${t},${r}%,50%)`) // The dreaded angry rainbow!
ramp(d3.interpolateRainbow) // A better cylical color scheme.
ramp(d3.interpolateViridis) // A nice sequential color scheme.
ramp(d3.interpolateViridis, 12) // With a discrete number of steps.
ramp(d3.interpolateRgb("red", "blue")) // Also works nicely with D3 interpolators.
ramp(d3.interpolateHclLong("red", "blue"))
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