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Viewing file:     mapDataStatistic.js (3.82 KB)      -rw-r--r--

/*
* 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;