@antv/g2plot
Version:
An interactive and responsive charting library
188 lines • 6.33 kB
JavaScript
import { __assign } from "tslib";
import { regressionLinear, regressionExp, regressionLoess, regressionLog, regressionPoly, regressionPow, regressionQuad, } from 'd3-regression';
import { isArray, get, isNumber } from '@antv/util';
import { getSplinePath } from '../../utils';
var REGRESSION_MAP = {
exp: regressionExp,
linear: regressionLinear,
loess: regressionLoess,
log: regressionLog,
poly: regressionPoly,
pow: regressionPow,
quad: regressionQuad,
};
/**
* 获取四象限默认配置
* @param {number} xBaseline
* @param {number} yBaseline
*/
export function getQuadrantDefaultConfig(xBaseline, yBaseline) {
// 文本便宜距离
var textOffset = 10;
// 四象限默认样式
var defaultConfig = {
regionStyle: [
{
position: {
start: [xBaseline, 'max'],
end: ['max', yBaseline],
},
style: {
fill: '#d8d0c0',
opacity: 0.4,
},
},
{
position: {
start: ['min', 'max'],
end: [xBaseline, yBaseline],
},
style: {
fill: '#a3dda1',
opacity: 0.4,
},
},
{
position: {
start: ['min', yBaseline],
end: [xBaseline, 'min'],
},
style: {
fill: '#d8d0c0',
opacity: 0.4,
},
},
{
position: {
start: [xBaseline, yBaseline],
end: ['max', 'min'],
},
style: {
fill: '#a3dda1',
opacity: 0.4,
},
},
],
lineStyle: {
stroke: '#9ba29a',
lineWidth: 1,
},
labelStyle: [
{
position: ['max', yBaseline],
offsetX: -textOffset,
offsetY: -textOffset,
style: {
textAlign: 'right',
textBaseline: 'bottom',
fontSize: 14,
fill: '#ccc',
},
},
{
position: ['min', yBaseline],
offsetX: textOffset,
offsetY: -textOffset,
style: {
textAlign: 'left',
textBaseline: 'bottom',
fontSize: 14,
fill: '#ccc',
},
},
{
position: ['min', yBaseline],
offsetX: textOffset,
offsetY: textOffset,
style: {
textAlign: 'left',
textBaseline: 'top',
fontSize: 14,
fill: '#ccc',
},
},
{
position: ['max', yBaseline],
offsetX: -textOffset,
offsetY: textOffset,
style: {
textAlign: 'right',
textBaseline: 'top',
fontSize: 14,
fill: '#ccc',
},
},
],
};
return defaultConfig;
}
var splinePath = function (data, config) {
var view = config.view, _a = config.options, xField = _a.xField, yField = _a.yField;
var xScaleView = view.getScaleByField(xField);
var yScaleView = view.getScaleByField(yField);
var pathData = data.map(function (d) {
return view.getCoordinate().convert({ x: xScaleView.scale(d[0]), y: yScaleView.scale(d[1]) });
});
return getSplinePath(pathData, false);
};
export var getPath = function (config) {
var options = config.options;
var xField = options.xField, yField = options.yField, data = options.data, regressionLine = options.regressionLine;
var _a = regressionLine.type, type = _a === void 0 ? 'linear' : _a, algorithm = regressionLine.algorithm;
var pathData;
if (algorithm) {
pathData = isArray(algorithm) ? algorithm : algorithm(data);
}
else {
var reg = REGRESSION_MAP[type]()
.x(function (d) { return d[xField]; })
.y(function (d) { return d[yField]; });
pathData = reg(data);
}
return splinePath(pathData, config);
};
/**
* 调整散点图 meta: { min, max } ① data.length === 1 ② 所有数据 y 值相等 ③ 所有数据 x 值相等
* @param options
* @returns
*/
export var getMeta = function (options) {
var _a;
var _b = options.meta, meta = _b === void 0 ? {} : _b, xField = options.xField, yField = options.yField, data = options.data;
var xFieldValue = data[0][xField];
var yFieldValue = data[0][yField];
var xIsPositiveNumber = xFieldValue > 0;
var yIsPositiveNumber = yFieldValue > 0;
/**
* 获得对应字段的 min max scale 配置
*/
function getMetaMinMax(field, axis) {
var fieldMeta = get(meta, [field]);
function getCustomValue(type) {
return get(fieldMeta, type);
}
var range = {};
if (axis === 'x') {
if (isNumber(xFieldValue)) {
if (!isNumber(getCustomValue('min'))) {
range['min'] = xIsPositiveNumber ? 0 : xFieldValue * 2;
}
if (!isNumber(getCustomValue('max'))) {
range['max'] = xIsPositiveNumber ? xFieldValue * 2 : 0;
}
}
return range;
}
if (isNumber(yFieldValue)) {
if (!isNumber(getCustomValue('min'))) {
range['min'] = yIsPositiveNumber ? 0 : yFieldValue * 2;
}
if (!isNumber(getCustomValue('max'))) {
range['max'] = yIsPositiveNumber ? yFieldValue * 2 : 0;
}
}
return range;
}
return __assign(__assign({}, meta), (_a = {}, _a[xField] = __assign(__assign({}, meta[xField]), getMetaMinMax(xField, 'x')), _a[yField] = __assign(__assign({}, meta[yField]), getMetaMinMax(yField, 'y')), _a));
};
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