Function extract

test/jasmine/tests/treemap_test.js:339–346

(k)

    }

    function extract(k) {
        var out = gd.calcdata.map(function (cd) {
            return cd.map(function (pt) {
                return pt[k];
            });
        });
        return out.length > 1 ? out : out[0];
    }

    function extractPt(k) {
        var out = gd.calcdata.map(function (cd) {