Method data

src/base/base-mixin.js:311–318

* Set the data callback or retrieve the chart's data set. The data callback is passed the chart's * group and by default will return * https://github.com/crossfilter/crossfilter/wiki/API-Reference#group_all group.all. * This behavior may be modified to, for instance, return on

(callback)

     * @returns {*|BaseMixin}
     */
    data (callback) {
        if (!arguments.length) {
            return this._data(this._group);
        }
        this._data = typeof callback === 'function' ? callback : utils.constant(callback);
        this.expireCache();
        return this;
    }

    /**
     * **mandatory**