Method filter

src/charts/heatmap.js:117–131

(filter)

    }

    filter (filter) {
        const nonstandardFilter = f => {
            logger.warnOnce('heatmap.filter taking a coordinate is deprecated - please pass dc.filters.TwoDimensionalFilter instead');
            return this._filter(filters.TwoDimensionalFilter(f));
        };

        if (!arguments.length) {
            return super.filter();
        }
        if (filter !== null && filter.filterType !== 'TwoDimensionalFilter' &&
            !(Array.isArray(filter) && Array.isArray(filter[0]) && filter[0][0].filterType === 'TwoDimensionalFilter')) {
            return nonstandardFilter(filter);
        }
        return super.filter(filter);
    }

    /**
     * Gets or sets the values used to create the rows of the heatmap, as an array. By default, all