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54 lines
1.8 KiB
54 lines
1.8 KiB
4 months ago
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.Quantile = void 0;
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const threshold_1 = require("./threshold");
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const wilkinson_extended_1 = require("../tick-methods/wilkinson-extended");
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const create_quartile_1 = require("../utils/create-quartile");
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/**
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* 类似 Threshold 比例尺，区别在于分位数比例尺 (Quantile) 将一个离散的输入域映射到一个离散的输出域
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* 输入域被指定为一组离散的样本值，输出域中的值的数量决定了分位数的数量。
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*/
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class Quantile extends threshold_1.Threshold {
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getDefaultOptions() {
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return {
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domain: [],
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range: [],
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tickCount: 5,
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unknown: undefined,
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tickMethod: wilkinson_extended_1.wilkinsonExtended,
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};
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}
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constructor(options) {
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super(options);
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}
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rescale() {
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const { domain, range } = this.options;
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this.n = range.length - 1;
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this.thresholds = (0, create_quartile_1.createQuartile)(domain, this.n + 1, false);
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}
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/**
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* 如果是在第一段后或者最后一段就把两端的值添加上
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*/
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invert(y) {
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const [a, b] = super.invert(y);
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const { domain } = this.options;
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const dMin = domain[0];
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const dMax = domain[domain.length - 1];
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return a === undefined && b === undefined ? [a, b] : [a || dMin, b || dMax];
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}
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getThresholds() {
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return this.thresholds;
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}
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clone() {
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return new Quantile(this.options);
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}
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getTicks() {
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const { tickCount, domain, tickMethod } = this.options;
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const lastIndex = domain.length - 1;
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const min = domain[0];
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const max = domain[lastIndex];
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return tickMethod(min, max, tickCount);
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}
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}
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exports.Quantile = Quantile;
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//# sourceMappingURL=quantile.js.map
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