Method getMinMax

src/core/core.scale.js:303–330

* @param {boolean} canStack * @return {{min: number, max: number}} * @protected * @since 3.0

(canStack)

	 * @since 3.0
	 */
  getMinMax(canStack) {
    let {min, max, minDefined, maxDefined} = this.getUserBounds();
    let range;

    if (minDefined && maxDefined) {
      return {min, max};
    }

    const metas = this.getMatchingVisibleMetas();
    for (let i = 0, ilen = metas.length; i < ilen; ++i) {
      range = metas[i].controller.getMinMax(this, canStack);
      if (!minDefined) {
        min = Math.min(min, range.min);
      }
      if (!maxDefined) {
        max = Math.max(max, range.max);
      }
    }

    // Make sure min <= max when only min or max is defined by user and the data is outside that range
    min = maxDefined && min > max ? max : min;
    max = minDefined && min > max ? min : max;

    return {
      min: finiteOrDefault(min, finiteOrDefault(max, min)),
      max: finiteOrDefault(max, finiteOrDefault(min, max))
    };
  }

  /**
	 * Get the padding needed for the scale