markerHelper.js
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
var zrUtil = require("zrender/lib/core/util");
var numberUtil = require("../../util/number");
var _dataStackHelper = require("../../data/helper/dataStackHelper");
var isDimensionStacked = _dataStackHelper.isDimensionStacked;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
var indexOf = zrUtil.indexOf;
function hasXOrY(item) {
return !(isNaN(parseFloat(item.x)) && isNaN(parseFloat(item.y)));
}
function hasXAndY(item) {
return !isNaN(parseFloat(item.x)) && !isNaN(parseFloat(item.y));
} // Make it simple, do not visit all stacked value to count precision.
// function getPrecision(data, valueAxisDim, dataIndex) {
// var precision = -1;
// var stackedDim = data.mapDimension(valueAxisDim);
// do {
// precision = Math.max(
// numberUtil.getPrecision(data.get(stackedDim, dataIndex)),
// precision
// );
// var stackedOnSeries = data.getCalculationInfo('stackedOnSeries');
// if (stackedOnSeries) {
// var byValue = data.get(data.getCalculationInfo('stackedByDimension'), dataIndex);
// data = stackedOnSeries.getData();
// dataIndex = data.indexOf(data.getCalculationInfo('stackedByDimension'), byValue);
// stackedDim = data.getCalculationInfo('stackedDimension');
// }
// else {
// data = null;
// }
// } while (data);
// return precision;
// }
function markerTypeCalculatorWithExtent(mlType, data, otherDataDim, targetDataDim, otherCoordIndex, targetCoordIndex) {
var coordArr = [];
var stacked = isDimensionStacked(data, targetDataDim
/*, otherDataDim*/
);
var calcDataDim = stacked ? data.getCalculationInfo('stackResultDimension') : targetDataDim;
var value = numCalculate(data, calcDataDim, mlType);
var dataIndex = data.indicesOfNearest(calcDataDim, value)[0];
coordArr[otherCoordIndex] = data.get(otherDataDim, dataIndex);
coordArr[targetCoordIndex] = data.get(targetDataDim, dataIndex); // Make it simple, do not visit all stacked value to count precision.
var precision = numberUtil.getPrecision(data.get(targetDataDim, dataIndex));
precision = Math.min(precision, 20);
if (precision >= 0) {
coordArr[targetCoordIndex] = +coordArr[targetCoordIndex].toFixed(precision);
}
return coordArr;
}
var curry = zrUtil.curry; // TODO Specified percent
var markerTypeCalculator = {
/**
* @method
* @param {module:echarts/data/List} data
* @param {string} baseAxisDim
* @param {string} valueAxisDim
*/
min: curry(markerTypeCalculatorWithExtent, 'min'),
/**
* @method
* @param {module:echarts/data/List} data
* @param {string} baseAxisDim
* @param {string} valueAxisDim
*/
max: curry(markerTypeCalculatorWithExtent, 'max'),
/**
* @method
* @param {module:echarts/data/List} data
* @param {string} baseAxisDim
* @param {string} valueAxisDim
*/
average: curry(markerTypeCalculatorWithExtent, 'average')
};
/**
* Transform markPoint data item to format used in List by do the following
* 1. Calculate statistic like `max`, `min`, `average`
* 2. Convert `item.xAxis`, `item.yAxis` to `item.coord` array
* @param {module:echarts/model/Series} seriesModel
* @param {module:echarts/coord/*} [coordSys]
* @param {Object} item
* @return {Object}
*/
function dataTransform(seriesModel, item) {
var data = seriesModel.getData();
var coordSys = seriesModel.coordinateSystem; // 1. If not specify the position with pixel directly
// 2. If `coord` is not a data array. Which uses `xAxis`,
// `yAxis` to specify the coord on each dimension
// parseFloat first because item.x and item.y can be percent string like '20%'
if (item && !hasXAndY(item) && !zrUtil.isArray(item.coord) && coordSys) {
var dims = coordSys.dimensions;
var axisInfo = getAxisInfo(item, data, coordSys, seriesModel); // Clone the option
// Transform the properties xAxis, yAxis, radiusAxis, angleAxis, geoCoord to value
item = zrUtil.clone(item);
if (item.type && markerTypeCalculator[item.type] && axisInfo.baseAxis && axisInfo.valueAxis) {
var otherCoordIndex = indexOf(dims, axisInfo.baseAxis.dim);
var targetCoordIndex = indexOf(dims, axisInfo.valueAxis.dim);
item.coord = markerTypeCalculator[item.type](data, axisInfo.baseDataDim, axisInfo.valueDataDim, otherCoordIndex, targetCoordIndex); // Force to use the value of calculated value.
item.value = item.coord[targetCoordIndex];
} else {
// FIXME Only has one of xAxis and yAxis.
var coord = [item.xAxis != null ? item.xAxis : item.radiusAxis, item.yAxis != null ? item.yAxis : item.angleAxis]; // Each coord support max, min, average
for (var i = 0; i < 2; i++) {
if (markerTypeCalculator[coord[i]]) {
coord[i] = numCalculate(data, data.mapDimension(dims[i]), coord[i]);
}
}
item.coord = coord;
}
}
return item;
}
function getAxisInfo(item, data, coordSys, seriesModel) {
var ret = {};
if (item.valueIndex != null || item.valueDim != null) {
ret.valueDataDim = item.valueIndex != null ? data.getDimension(item.valueIndex) : item.valueDim;
ret.valueAxis = coordSys.getAxis(dataDimToCoordDim(seriesModel, ret.valueDataDim));
ret.baseAxis = coordSys.getOtherAxis(ret.valueAxis);
ret.baseDataDim = data.mapDimension(ret.baseAxis.dim);
} else {
ret.baseAxis = seriesModel.getBaseAxis();
ret.valueAxis = coordSys.getOtherAxis(ret.baseAxis);
ret.baseDataDim = data.mapDimension(ret.baseAxis.dim);
ret.valueDataDim = data.mapDimension(ret.valueAxis.dim);
}
return ret;
}
function dataDimToCoordDim(seriesModel, dataDim) {
var data = seriesModel.getData();
var dimensions = data.dimensions;
dataDim = data.getDimension(dataDim);
for (var i = 0; i < dimensions.length; i++) {
var dimItem = data.getDimensionInfo(dimensions[i]);
if (dimItem.name === dataDim) {
return dimItem.coordDim;
}
}
}
/**
* Filter data which is out of coordinateSystem range
* [dataFilter description]
* @param {module:echarts/coord/*} [coordSys]
* @param {Object} item
* @return {boolean}
*/
function dataFilter(coordSys, item) {
// Alwalys return true if there is no coordSys
return coordSys && coordSys.containData && item.coord && !hasXOrY(item) ? coordSys.containData(item.coord) : true;
}
function dimValueGetter(item, dimName, dataIndex, dimIndex) {
// x, y, radius, angle
if (dimIndex < 2) {
return item.coord && item.coord[dimIndex];
}
return item.value;
}
function numCalculate(data, valueDataDim, type) {
if (type === 'average') {
var sum = 0;
var count = 0;
data.each(valueDataDim, function (val, idx) {
if (!isNaN(val)) {
sum += val;
count++;
}
});
return sum / count;
} else if (type === 'median') {
return data.getMedian(valueDataDim);
} else {
// max & min
return data.getDataExtent(valueDataDim, true)[type === 'max' ? 1 : 0];
}
}
exports.dataTransform = dataTransform;
exports.getAxisInfo = getAxisInfo;
exports.dataFilter = dataFilter;
exports.dimValueGetter = dimValueGetter;
exports.numCalculate = numCalculate;