en/builder/src/echarts3/layout/points.js

export default function (seriesType, ecModel) {
  ecModel.eachSeriesByType(seriesType, function (seriesModel) {
    var data = seriesModel.getData();
    var coordSys = seriesModel.coordinateSystem;

    if (!coordSys) {
      return;
    }

    var dims = [];
    var coordDims = coordSys.dimensions;

    for (var i = 0; i < coordDims.length; i++) {
      dims.push(seriesModel.coordDimToDataDim(coordSys.dimensions[i])[0]);
    }

    if (dims.length === 1) {
      data.each(dims[0], function (x, idx) {
        // Also {Array.<number>}, not undefined to avoid if...else... statement
        data.setItemLayout(idx, isNaN(x) ? [NaN, NaN] : coordSys.dataToPoint(x));
      });
    } else if (dims.length === 2) {
      data.each(dims, function (x, y, idx) {
        // Also {Array.<number>}, not undefined to avoid if...else... statement
        data.setItemLayout(idx, isNaN(x) || isNaN(y) ? [NaN, NaN] : coordSys.dataToPoint([x, y]));
      }, true);
    }
  });
}