Method parse

src/scales/scale.category.js:70–78

(raw, index)

  }

  parse(raw, index) {
    if (isNullOrUndef(raw)) {
      return null;
    }
    const labels = this.getLabels();
    index = isFinite(index) && labels[index] === raw ? index
      : findOrAddLabel(labels, raw, valueOrDefault(index, raw), this._addedLabels);
    return validIndex(index, labels.length - 1);
  }

  determineDataLimits() {
    const {minDefined, maxDefined} = this.getUserBounds();