(User Defined Functions (UDFs
free the resources used by the defined variable
This command allows the user to set the undefined data value for all forms of grads output. This command controls the undefined values printed to screen with the 'gxout stat' and the 'gxout print' output, as well as the undefined values in fwrite, sdfwrite, and geotiff files.
query command allows the user
to get information about a variety of aspects of the current grads session.
Configuration, plot characteristics, graphics specifics, and file structure
are some examples. The use of
query pos combined with
the coordinate transformations is the basis of many interactive applications
with buttons and drop menus. The
query command may
be shortened to simply
q. The syntax is:
شنبه 05 شهریور 1401