def nearest_vertex(self, pt, n_jobs=-<NUM_LIT:1>):
try:              (d,near) = self.vertex_hash.query(pt, k=<NUM_LIT:1>, n_jobs=n_jobs)<EOL>except Exception: (d,near) = self.vertex_hash.query(pt, k=<NUM_LIT:1>)<EOL>return near<EOL>
mesh.nearest_vertex(pt) yields the id number of the nearest vertex in the given
mesh to the given point pt. If pt is an (n x dims) matrix of points, an id is given
for each column of pt.