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ashraf rateb <[email protected]> Sun, 16 Mar 2014 10:41:39 +0000

Newsgroups	gmane.comp.gis.gmt.user
Message-ID	<[email protected]>

Sorry for that , this is simple questions about commanda in gmt , as iam new user
i try to generate GPS velocity map on dem area,firstly iam executed the command grdimage  to get the dem. map , then when i tried the  Psvelo command, its working but doesn't give me
any results, 

its something like this 
gmt    grdimage  Sub.grd  -Jm3.3i     -Isub_shad.grd  -Cibcso.cpt -R -P  -B0.6 > %ps%
gmt    psvelo vel.gmt  -Jm3.3i  -R  -Se.006/0.95/7 -Gblue -L -K -O -V  -p >> %ps%

Any help?
ashraf