Transform projected coordinates to Greenwich system
[lat,lon,alt] = cart2grn
[lat,lon,alt] = cart2grn(hndl)
[lat,lon,alt] = cart2grn(hndl,mstruct)
When objects are projected and displayed on map axes, they are plotted in Cartesian coordinates appropriate for the selected projection. This function transforms those coordinates back into the Greenwich frame, in which longitude is measured positively East from Greenwich (longitude 0), England and negatively West from Greenwich.
[lat,lon,alt] = cart2grn returns
the latitude, longitude, and altitude data in geographic coordinates
of the current map object, removing any clips or trims introduced
during the display process from the output data.
[lat,lon,alt] = cart2grn(hndl) specifies
the displayed map object desired with its handle
The default handle is
[lat,lon,alt] = cart2grn(hndl,mstruct) specifies
the map structure associated with the object. The map structure of
the current axes is the default.