20040225: Plotting wind vectors only for winds above a threshold value?

Pete,

Yes....
I'm assuming you are using gridded data here.
Use the VGT(V,S) or VGE(V,S) functions to obatain
the vectors greater than, or greater or equal to a value.

These functions are defined in Section 3 of the GEMPAK manual 
under the GPARM heading.

In a surface or upper air program, you would use
SFPARM or SNPARM using the qualifier such as
sped>value.

Steve Chiswell
Unidata User Support


On Wed, 2004-02-25 at 09:45, Pete Pokrandt wrote:
> All,
> 
> Received a question from one of our visiting scientists, I don't
> see an answer in a quick look through the manuals.. Any ideas?
> 
>  >do you know a way to tell GEMPAK to plot only vectors above a certain 
>  >magnitude???
> 
> Thanks,
> 
> Pete
> 
> --
> +>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>+<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+
> ^ Pete Pokrandt                    V 1447  AOSS Bldg  1225 W Dayton St^
> ^ Systems Programmer               V Madison,         WI     53706    ^
> ^                                  V      address@hidden       ^
> ^ Dept of Atmos & Oceanic Sciences V (608) 262-3086 (Phone/voicemail) ^
> ^ University of Wisconsin-Madison  V       262-0166 (Fax)             ^
> +<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>+