generateColorScheme(scheme, type, domain) {
if (typeof(scheme) === 'string') {
scheme = colorSets.find(cs => {
return cs.name === scheme;
});
}
let colorScale;
if (type === 'quantile') {
colorScale = scaleQuantile()
.range(scheme.domain)
.domain(domain);
} else if (type === 'ordinal') {
colorScale = scaleOrdinal()
.range(scheme.domain)
.domain(domain);
} else if (type === 'linear') {
// linear schemes must have at least 2 colors
const colorDomain = [...scheme.domain];
if (colorDomain.length === 1) {
colorDomain.push(colorDomain[0]);
this.colorDomain = colorDomain;
}
const points = range(0, 1, 1.0 / colorDomain.length);
colorScale = scaleLinear()
.domain(points)
.range(colorDomain);
}
return colorScale;
}
outputNumber = quantizeScaleNumber(0.51); // copy(...) ----------------------------------------------------------------- const copiedQuantizeScale: d3Scale.ScaleQuantize<number> = quantizeScaleNumber.copy(); // ------------------------------------------------------------------------------- // Quantile Scale Factory // ------------------------------------------------------------------------------- // scaleQuantile() ----------------------------------------------------------------- let quantileScaleNumber: d3Scale.ScaleQuantile<number>; let quantileScaleString: d3Scale.ScaleQuantile<string>; quantileScaleNumber = d3Scale.scaleQuantile(); quantileScaleString = d3Scale.scaleQuantile<string>(); // ScaleQuantile Interface ======================================================== // domain(...) ----------------------------------------------------------------- quantileScaleNumber = quantileScaleNumber.domain(domainNumbers); domainNumbers = quantileScaleNumber.domain(); quantileScaleString = quantileScaleString.domain(domainNumeric); // range(...) ----------------------------------------------------------------- quantileScaleNumber = quantileScaleNumber.range([1, 2, 3, 4]);