Method linkScales

src/core/core.datasetController.js:299–317

()

  }

  linkScales() {
    const chart = this.chart;
    const meta = this._cachedMeta;
    const dataset = this.getDataset();

    const chooseId = (axis, x, y, r) => axis === 'x' ? x : axis === 'r' ? r : y;

    const xid = meta.xAxisID = valueOrDefault(dataset.xAxisID, getFirstScaleId(chart, 'x'));
    const yid = meta.yAxisID = valueOrDefault(dataset.yAxisID, getFirstScaleId(chart, 'y'));
    const rid = meta.rAxisID = valueOrDefault(dataset.rAxisID, getFirstScaleId(chart, 'r'));
    const indexAxis = meta.indexAxis;
    const iid = meta.iAxisID = chooseId(indexAxis, xid, yid, rid);
    const vid = meta.vAxisID = chooseId(indexAxis, yid, xid, rid);
    meta.xScale = this.getScaleForId(xid);
    meta.yScale = this.getScaleForId(yid);
    meta.rScale = this.getScaleForId(rid);
    meta.iScale = this.getScaleForId(iid);
    meta.vScale = this.getScaleForId(vid);
  }

  getDataset() {
    return this.chart.data.datasets[this.index];