Function getKeyOfEdges

src/chart/helper/multipleGraphEdgeHelper.ts:75–79

(n1, n2, seriesModel)

 * @returns {string} key
 */
const getKeyOfEdges = function (n1, n2, seriesModel) {
    const source = [n1.id, n1.dataIndex].join('.');
    const target = [n2.id, n2.dataIndex].join('.');
    return [seriesModel.uid, source, target].join(KEY_DELIMITER);
};

/**
 * get opposite key