Velocity vectors on map

Velocity vectors on map

Post by Kyong Hwan Se » Sat, 16 Oct 1999 04:00:00



Hi folks,

Does anyone have a code to plot wind vectors correctly on a map
(azimuthal polar projection)?  
The vector length should not plotted with respect to a cell (In the
procedure "VELOVECT", the vector length is with respect to a cell) ..
If you have any idea about this, please reply for me.
Thanks,

Kyong Seo
---------------------------------------------------------        
Texas A&M University         Office:(409) 845-0189      

 
 
 

Velocity vectors on map

Post by Martin.Schu.. » Tue, 26 Oct 1999 04:00:00




Quote:> Hi folks,

> Does anyone have a code to plot wind vectors correctly on a map
> (azimuthal polar projection)?  
> The vector length should not plotted with respect to a cell (In the
> procedure "VELOVECT", the vector length is with respect to a cell) ..
> If you have any idea about this, please reply for me.
> Thanks,

try out my modification of VELOVECT which allows for irregularily spaced
data and includes your desired modification for a proper LENGTH keyword
(by Franz Rohrer).

Please find msvelovect.pro attached.

Martin

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[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[
[[ Dr. Martin Schultz   Max-Planck-Institut fuer Meteorologie    [[
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[[                      phone: +49 40 41173-308 or 416           [[
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[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[

  msvelovect.pro
8K Download

 
 
 

1. Velocity vectors on maps

Can anyone give me pointers to IDL procedures to making correct velocity
vector plots on maps, notably azimuthal polar projections?

This is one of those annoying inadequacies in IDL (see earlier discussion
on mathematical routines) that include niggling mapping and contouring
problems.  (NCAR graphics did vector and streamline plots well years ago
-- if you could stand to use NCAR graphics.)

Thanks, Ken Bowman

--
Dr. Kenneth P. Bowman, Professor                409-862-4060
Department of Meteorology                       409-862-4466 fax
Texas A&M University                            bowmanATcsrp.tamu.edu

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