GEMPAK Online Tutorial > GEMPAK Mapping Programs
6.3 GEMPAK Mapping Programs: GPMAP
GPMAP is used to draw maps when data calculations are not necessary, and
can be used to color fill defined regions. This program is also capable of
plotting several miscellaneous data types such as Watches, Warnings, and Vector graphics.
One common use of GPMAP is to plot RADAR and
SATELLITE images.
Another common use for GPMAP is for overlaying map files and titles on images
generated from several programs.
Lets try it out!
- Display the current NIDS Base Reflectivity image for level 1, overlain
with county boundaries, interstates, US highways, state highways, and rivers.
Another common use for GPMAP is to select a region for viewing using
the CURSOR command. The CURSOR command can be used
to assign values to the GAREA, POINT and CXSTNS variables. By entering at the
GEMPAK prompt: CURSOR variable, the X window is turned in to a graphical
input device where the values returned from the window are stored in the variable
specified.
- Use GPMAP to plot the GOES-7 infrared image for Hurricane Bob (IR_910819_1801).
- Plot the full image contained in the dataset.
- Use the CURSOR GAREA command to select the southeast US region,
and plot this closeup in a second window called "closeup".
GEMPAK Online Tutorial > GEMPAK Mapping Programs
