code: function (activeState) {
          var coordSys = this.coordinateSystem;
          var data = this.getData();
          var indices = [];
  
          coordSys.eachActiveState(data, function (theActiveState, dataIndex) {
              if (activeState === theActiveState) {
                  indices.push(data.getRawIndex(dataIndex));
              }
          });
  
          return indices;
      }
docs: User can get data raw indices on 'axisAreaSelected' event received.
  
  @public
  @param {string} activeState 'active' or 'inactive' or 'normal'
  @return {Array.<number>} Raw indices