Backup of IT memo/GrADS memo/OpenGrADS (No. 1)

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  • 1 (2009-07-18 (Sat) 04:17:29)
  • 2 (2009-07-18 (Sat) 04:19:41)

Using OpenGrADS †

• For me, only for calculation of stream function and velocity potential...
• Official site: http://opengrads.org

Installation †

All examples are for grads-1.9 on Linux-PC, located at ~/GrADS.

1. Save the original grads directory at somewhere else (just in case).
2. Get appropriate executables from http://sourceforge.net/projects/opengrads/files/grads1/grads-1.9.0-rc1-bin-i686-pc-linux-gnu.tar.gz/download, and copy the contents in bin directory to ~/GrADS/bin (overwrite them).
3. Get appropriate extensions from http://sourceforge.net/projects/opengrads/files/extensions/grads-1.9.0-rc1-gex-r2-i686-pc-linux-gnu.tar.gz/download, and copy the contents in bin directory to ~/GrADS/bin (there should be no file with same name).
4. Set environmental variables as follows:
   GAUDXT=$HOME/GrADS/bin/gex/udxt
   LD_LIBRARY_PATH=$HOME/GrADS/bin/gex:$LD_LIBRARY_PATH

Drawing stream function †

$ gradsnc
> open pgb.ctl (example)
> d fish_psi(ugrdprs,vgrdprs)