Method changeWeight

src/openlayers/mapping/WebMap.js:3458–3472

* @private * @function WebMap.prototype.changeWeight * @description 改变当前权重字段 * @param {Array} features - feature的集合 * @param {string} weightFeild - 权重字段

(features, weightFeild)

   * @param {string} weightFeild - 权重字段
   */
  changeWeight(features, weightFeild) {
    let that = this;
    this.fieldMaxValue = {};
    this.getMaxValue(features, weightFeild);
    let maxValue = this.fieldMaxValue[weightFeild];
    features.forEach(function (feature) {
      let attributes = feature.get('attributes');
      try {
        let value = attributes[weightFeild];
        feature.set('weight', value / maxValue);
      } catch (e) {
        that.errorCallback && that.errorCallback(e);
      }
    });
  }

  /**
   * @private