Function _drag

test/jasmine/tests/splom_test.js:1432–1437

(p0, p1)

    });

    function _drag(p0, p1) {
        var node = d3Select('.nsewdrag[data-subplot="xy"]').node();
        var dx = p1[0] - p0[0];
        var dy = p1[1] - p0[1];
        return drag({node: node, dpos: [dx, dy], pos0: p0});
    }

    it('@gl should update scattermatrix ranges on pan', function(done) {
        var fig = require('../../image/mocks/splom_iris.json');