Method valueAccessor

src/base/base-mixin.js:1257–1263

* Set or get the value accessor function. The value accessor function is used to retrieve the * value from the crossfilter group. Group values are used differently in different charts, for * example values correspond to slice sizes in a pie chart and y axis positions in a grid * coord

(valueAccessor)

     * @returns {Function|BaseMixin}
     */
    valueAccessor (valueAccessor) {
        if (!arguments.length) {
            return this._valueAccessor;
        }
        this._valueAccessor = valueAccessor;
        return this;
    }

    /**
     * Set or get the label function. The chart class will use this function to render labels for each