VertexIterator e = dataSet_.vertices();
while (e.hasNext()) {
Vertex gvert = e.nextVertex();
AirportSpecs gv = (AirportSpecs)gvert.element();
if (
(x >= gv.x() - RADIUS) &&
(x <= gv.x() + RADIUS) &&
(y >= gv.y() - RADIUS) &&
(y <= gv.y() + RADIUS)
) {
return gvert;