@antv/scale
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Toolkit for mapping abstract data into visual representation.
14 lines (12 loc) • 443 B
text/typescript
import { TickMethod } from '../types';
import { logs, pows } from './log';
export const d3LogNice: TickMethod = (a, b, _, base) => {
const shouldReflect = a < 0;
const log = logs(base, shouldReflect);
const pow = pows(base, shouldReflect);
const r = a > b;
const min = r ? b : a;
const max = r ? a : b;
const niceDomain = [pow(Math.floor(log(min))), pow(Math.ceil(log(max)))];
return r ? niceDomain.reverse() : niceDomain;
};