MESHM  Display a regular matrix map warped to a projected graticule
 
   MESHM(map,maplegend) will display the regular matrix map warped
   to the default projection graticule.  The current axes must have a
   valid map projection definition.
 
   MESHM(map,maplegend,gsize) displays a regular matrix map warped to a
   graticule mesh defined by gsize.  GSIZE must be a 2 element vector
   specifying the number of latitude graticule lines, gsize(1), and the
   number of longitude graticule lines, gsize(2).
 
   MESHM(map,maplegend,gsize,alt) displays the regular surface map at
   the altitude specified by alt.  If alt is a scalar, then the map is
   drawn in the z = alt plane.  If alt is a matrix, then size(alt) must
   equal gsize, and the graticule mesh is drawn at the altitudes specified
   by alt.  If the default graticule is desired, set gsize = [].
 
   MESHM(map,maplegend,'PropertyName',PropertyValue,...) and
   MESHM(map,maplegend,gsize,'PropertyName',PropertyValue,...) and
   MESHM(map,maplegend,gsize,alt,'PropertyName',PropertyValue,...) display
   regular matrix map using the specified surface properties.  If data is
   placed in the UserData property of the surface, then the projection of
   this object can not be altered once displayed.
 
   h = MESHM(...) returns the handle to the surface drawn.
 
   MESHM, without any inputs, activates a GUI for projecting regular surfaces
   onto the current axes.
 
   See also SURFM, SURFACEM, PCOLORM, MESHGRAT