Method keyAccessor

src/base/base-mixin.js:1236–1242

* Set or get the key accessor function. The key accessor function is used to retrieve the key * value from the crossfilter group. Key values are used differently in different charts, for * example keys correspond to slices in a pie chart and x axis positions in a grid coordinate chart.

(keyAccessor)

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

    /**
     * Set or get the value accessor function. The value accessor function is used to retrieve the