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Co-Authored-By: 狸花猫/Claude-Qwen3.6-Plus 🐾
89 lines
2.9 KiB
JavaScript
89 lines
2.9 KiB
JavaScript
import { __extends } from "tslib";
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import { getLogPositiveMin, log } from '../util/math';
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import Continuous from './base';
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/**
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* Log 度量，处理非均匀分布
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*/
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var Log = /** @class */ (function (_super) {
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__extends(Log, _super);
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function Log() {
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var _this = _super !== null && _super.apply(this, arguments) || this;
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_this.type = 'log';
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return _this;
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}
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/**
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* @override
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*/
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Log.prototype.invert = function (value) {
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var base = this.base;
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var max = log(base, this.max);
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var rangeMin = this.rangeMin();
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var range = this.rangeMax() - rangeMin;
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var min;
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var positiveMin = this.positiveMin;
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if (positiveMin) {
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if (value === 0) {
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return 0;
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}
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min = log(base, positiveMin / base);
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var appendPercent = (1 / (max - min)) * range; // 0 到 positiveMin的占比
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if (value < appendPercent) {
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// 落到 0 - positiveMin 之间
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return (value / appendPercent) * positiveMin;
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}
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}
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else {
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min = log(base, this.min);
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}
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var percent = (value - rangeMin) / range;
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var tmp = percent * (max - min) + min;
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return Math.pow(base, tmp);
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};
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Log.prototype.initCfg = function () {
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this.tickMethod = 'log';
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this.base = 10;
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this.tickCount = 6;
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this.nice = true;
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};
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// 设置
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Log.prototype.setDomain = function () {
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_super.prototype.setDomain.call(this);
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var min = this.min;
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if (min < 0) {
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throw new Error('When you use log scale, the minimum value must be greater than zero!');
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}
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if (min === 0) {
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this.positiveMin = getLogPositiveMin(this.values, this.base, this.max);
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}
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};
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// 根据当前值获取占比
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Log.prototype.getScalePercent = function (value) {
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var max = this.max;
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var min = this.min;
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if (max === min) {
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return 0;
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}
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// 如果值小于等于0，则按照0处理
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if (value <= 0) {
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return 0;
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}
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var base = this.base;
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var positiveMin = this.positiveMin;
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// 如果min == 0, 则根据比0大的最小值，计算比例关系。这个最小值作为坐标轴上的第二个tick，第一个是0但是不显示
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if (positiveMin) {
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min = (positiveMin * 1) / base;
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}
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var percent;
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// 如果数值小于次小值，那么就计算 value / 次小值 占整体的比例
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if (value < positiveMin) {
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percent = value / positiveMin / (log(base, max) - log(base, min));
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}
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else {
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percent = (log(base, value) - log(base, min)) / (log(base, max) - log(base, min));
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}
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return percent;
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};
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return Log;
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}(Continuous));
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export default Log;
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//# sourceMappingURL=log.js.map
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