20040309: range rings

Bruce,

One possibility is to plot your radar with GPMAP, then
use use GPANOT to draw navigated rings, eg with your PROJ=rad
and RADFIL specifying your radar file:

 SHAPE    = regpoly
 INFO     = 1/1.0/360/360
 LOCI     = #39.78;-104.53

The LOCI point would be the location of the radar. The
radius of "1" in the INFO line will draw a ring at 1.0 degrees radius
from the LOCI point (KFTG's lat/lon in this example).

To use repeatedly in your script, you could create a VGF file with the
rings drawn at the desired radii, and use that in the GPMAP parameter
VGFIL.

Steve Chiswell
Unidata User Support


On Tue, 2004-03-09 at 11:27, Haynie, Bruce wrote:
> Howdy!
> 
> I'd like to display range rings on my GEMPAK-generated radar images. 
> A quick search through the online literature yielded unfavorable
> results.  Is there a handy method that will allow me to display range
> rings using csh scripts??
> 
> Thanks!
> 
> Bruce
> ------------------
> Bruce Haynie                    eml: address@hidden
> Research Associate              phn: 806-885-4644 x224
> West TX MesoNet         fax: 806-885-4468
> http://www.mesonet.ttu.edu
>