Identify current point on
axesm-based map using
pt = gcpmap
pt = gcpmap(hndl)
pt = gcpmap returns the current point (the
location of last button click) of the current
axesm-based map in the form
[latitude longitude z-altitude].
pt = gcpmap(hndl) specifies the
axesm-based map in question by its handle.
Set up an
axesm-based map with a graticule and display a world
axesm robinson gridm on geoshow('landareas.shp')
Click somewhere near Boston, Massachusetts to obtain a current point:
pt = gcpmap pt = 44.171 -69.967 2 44.171 -69.967 0 whos Name Size Bytes Class Attributes pt 2x3 48 double array
gcpmap works much like the standard MATLAB® function
get(gca,'CurrentPoint'), except that the returned
matrix is in
[lat lon z], not
[x y z].
You must use
view(2) and an ordinary projection (not the Globe
projection) when working with the
CurrentPoint property is updated whenever a button-click event
occurs in a MATLAB figure window. The pointer does not have to be within the axes, or even the
figure window. Coordinates with respect to the requested axes are returned regardless of the
pointer location. Likewise,
gcpmap will return values that may look
reasonable whether the current point is within the graticule bounds or not, and thus must be
used with care.
Introduced before R2006a