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20041005: SNMAP question

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  • Subject: 20041005: SNMAP question
  • Date: Tue, 05 Oct 2004 16:12:15 -0600
>From: "Robert J. Ballentine" <address@hidden>
>Organization: UCAR/Unidata
>Keywords: 200410051544.i95FikUE010461

>Support,
>   I am trying to use SNMAP to plot 700-to-300 mb thickness
>over North America using observed heights at 300 mb and at
>700 mb. I have been unable to find a way to write the snparm
>command to get the thickness plot despite trying many
>combinations, e.g, snparm=sub(hght@300,hght@700).
>   I realize that sub( ) is intended for gfunc, but is there
>a way to compute (and plot) this difference using snparm in SNMAP?
>   Thanks,
>   Bob
>
--

Bob,

No, the SF and SN programs do not have the rich set of functions
that can be acomplished through gridding the data with OABSND &
OABSFC and doing the computations in the GD programs. 

It would be possible to write routines as the STNDEX to
support some additional common parameters. Do you 
have a list that you would be interested in?


Steve Chiswell
Unidata User Support

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