[GEMPAK #FYS-891494]: odd problem with gdcross

> Hi Steve,
> 
> I'm having trouble trying to use WNML and WCMP.  Can either of
> these be used in gdcross, and if so, what is the proper way to use
> them?
> 
> Let me know, thanks!
> 
> 
> Brian
> 
> 
> 

Brian,

WCMP and WNML are SNPARM parameters:
SNPARM=WCMP$angle and WNML$angle 

Typically for gdcross, you would be using the gridded wind components and 
TANG(V) and
NORM(V) (or TANGV(V) and NORMV(V)) for tangential and normal wind components,
though you could do an arbitrary angle unit vector with ROT, and then
use the VASV function to compute the component of the desired vector on  the
specified rotated vector.

Steve Chiswell
Unidata User Support



Ticket Details
===================
Ticket ID: FYS-891494
Department: Support GEMPAK
Priority: High
Status: Closed