% M_QUIVER Makes a quiverplot on a map (QUIVER-style)
% M_QUIVER(LONG,LAT,U,V) plots velocity vectors as arrows with components
% (U,V) at the points (LONG,LAT) on the currently defined map. The
% matrices LONG,LAT,U,V must all be the same size. U and V contain the
% eastward and northward components of velocity. Arrow scaling is automatic.
