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node_modules/echarts/lib/chart/map/mapDataStatistic.js 3.82 KB
aaac7fed   liuqimichale   add
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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");
  
  /*
  * 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.
  */
  // FIXME 公用?
  
  /**
   * @param {Array.<module:echarts/data/List>} datas
   * @param {string} statisticType 'average' 'sum'
   * @inner
   */
  function dataStatistics(datas, statisticType) {
    var dataNameMap = {};
    zrUtil.each(datas, function (data) {
      data.each(data.mapDimension('value'), function (value, idx) {
        // Add prefix to avoid conflict with Object.prototype.
        var mapKey = 'ec-' + data.getName(idx);
        dataNameMap[mapKey] = dataNameMap[mapKey] || [];
  
        if (!isNaN(value)) {
          dataNameMap[mapKey].push(value);
        }
      });
    });
    return datas[0].map(datas[0].mapDimension('value'), function (value, idx) {
      var mapKey = 'ec-' + datas[0].getName(idx);
      var sum = 0;
      var min = Infinity;
      var max = -Infinity;
      var len = dataNameMap[mapKey].length;
  
      for (var i = 0; i < len; i++) {
        min = Math.min(min, dataNameMap[mapKey][i]);
        max = Math.max(max, dataNameMap[mapKey][i]);
        sum += dataNameMap[mapKey][i];
      }
  
      var result;
  
      if (statisticType === 'min') {
        result = min;
      } else if (statisticType === 'max') {
        result = max;
      } else if (statisticType === 'average') {
        result = sum / len;
      } else {
        result = sum;
      }
  
      return len === 0 ? NaN : result;
    });
  }
  
  function _default(ecModel) {
    var seriesGroups = {};
    ecModel.eachSeriesByType('map', function (seriesModel) {
      var hostGeoModel = seriesModel.getHostGeoModel();
      var key = hostGeoModel ? 'o' + hostGeoModel.id : 'i' + seriesModel.getMapType();
      (seriesGroups[key] = seriesGroups[key] || []).push(seriesModel);
    });
    zrUtil.each(seriesGroups, function (seriesList, key) {
      var data = dataStatistics(zrUtil.map(seriesList, function (seriesModel) {
        return seriesModel.getData();
      }), seriesList[0].get('mapValueCalculation'));
  
      for (var i = 0; i < seriesList.length; i++) {
        seriesList[i].originalData = seriesList[i].getData();
      } // FIXME Put where?
  
  
      for (var i = 0; i < seriesList.length; i++) {
        seriesList[i].seriesGroup = seriesList;
        seriesList[i].needsDrawMap = i === 0 && !seriesList[i].getHostGeoModel();
        seriesList[i].setData(data.cloneShallow());
        seriesList[i].mainSeries = seriesList[0];
      }
    });
  }
  
  module.exports = _default;