Method dataIndexToBarIndex

js/src/Hist.ts:526–555

(selected)

  }

  private dataIndexToBarIndex(selected) {
    //function to calculate bar indices for a given list of data
    //indices
    if (selected === null) {
      return null;
    }

    const x_data = this.model.get('sample');
    const data = Array.from(selected).map((idx: number) => {
      return x_data[idx];
    });
    let bar_indices = [];
    for (let iter = 0; iter < data.length; iter++) {
      //xBins is of length num_bars+1. So if the max element is
      //selected, we get a bar index which is equal to num_bars.
      let index = Math.min(
        _.indexOf(this.model.xBins, data[iter], true),
        this.model.xBins.length - 2
      );
      //if the data point is not one of the bins, then find the index
      //where it is to be inserted.
      if (index === -1) {
        index = _.sortedIndex(this.model.xBins, data[iter]) - 1;
      }
      bar_indices.push(index);
    }
    bar_indices.sort();
    bar_indices = _.uniq(bar_indices, true);
    return bar_indices;
  }

  private resetSelection() {
    this.selected_indices = [];