Function snapToVertexAngle

src/plots/polar/polar.js:1575–1579

(a, vangles)

}

function snapToVertexAngle(a, vangles) {
    var fn = function(v) { return Lib.angleDist(a, v); };
    var ind = Lib.findIndexOfMin(vangles, fn);
    return vangles[ind];
}

function updateElement(sel, showAttr, attrs) {
    if(showAttr) {