medical/node_modules/echarts/lib/component/dataZoom/dataZoomProcessor.js

var echarts = require("../../echarts");

echarts.registerProcessor(function (ecModel, api) {
  ecModel.eachComponent('dataZoom', function (dataZoomModel) {
    // We calculate window and reset axis here but not in model
    // init stage and not after action dispatch handler, because
    // reset should be called after seriesData.restoreData.
    dataZoomModel.eachTargetAxis(resetSingleAxis); // Caution: data zoom filtering is order sensitive when using
    // percent range and no min/max/scale set on axis.
    // For example, we have dataZoom definition:
    // [
    //      {xAxisIndex: 0, start: 30, end: 70},
    //      {yAxisIndex: 0, start: 20, end: 80}
    // ]
    // In this case, [20, 80] of y-dataZoom should be based on data
    // that have filtered by x-dataZoom using range of [30, 70],
    // but should not be based on full raw data. Thus sliding
    // x-dataZoom will change both ranges of xAxis and yAxis,
    // while sliding y-dataZoom will only change the range of yAxis.
    // So we should filter x-axis after reset x-axis immediately,
    // and then reset y-axis and filter y-axis.

    dataZoomModel.eachTargetAxis(filterSingleAxis);
  });
  ecModel.eachComponent('dataZoom', function (dataZoomModel) {
    // Fullfill all of the range props so that user
    // is able to get them from chart.getOption().
    var axisProxy = dataZoomModel.findRepresentativeAxisProxy();
    var percentRange = axisProxy.getDataPercentWindow();
    var valueRange = axisProxy.getDataValueWindow();
    dataZoomModel.setRawRange({
      start: percentRange[0],
      end: percentRange[1],
      startValue: valueRange[0],
      endValue: valueRange[1]
    }, true);
  });
});

function resetSingleAxis(dimNames, axisIndex, dataZoomModel) {
  dataZoomModel.getAxisProxy(dimNames.name, axisIndex).reset(dataZoomModel);
}

function filterSingleAxis(dimNames, axisIndex, dataZoomModel) {
  dataZoomModel.getAxisProxy(dimNames.name, axisIndex).filterData(dataZoomModel);
}