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18 lines
550 B
18 lines
550 B
1 year ago
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import {Selection} from "./index";
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import selectorAll from "../selectorAll";
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export default function(select) {
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if (typeof select !== "function") select = selectorAll(select);
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for (var groups = this._groups, m = groups.length, subgroups = [], parents = [], j = 0; j < m; ++j) {
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for (var group = groups[j], n = group.length, node, i = 0; i < n; ++i) {
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if (node = group[i]) {
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subgroups.push(select.call(node, node.__data__, i, group));
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parents.push(node);
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}
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}
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}
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return new Selection(subgroups, parents);
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}
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