[gradsusr] Gxout Findstn

[Stephen McMillan]

Thanks Daniele!  That helps alot.  I see there's also a fourth result,
to the right of latitude...do you know what that is?  I'm thinking it
may be a distance to nearest station in screen units.  Here's an
example output from mine:
d snowfall.2(t=2);4.54519;4.52597
result= 363632 -76 40.55 0.198828

I also noticed it gives the output of the nearest station, regardless
of whether it's a valid (non-missing) value.  I think It would be more
useful if it gave the value of the nearest valid station.

Stephen

On Mon, Aug 30, 2010 at 3:40 AM, Daniele Gandini
<daniele.gandini at arpa.piemonte.it> wrote:
> Hi Stephen.
>
> * q pos to expect mouse click and to have xs and ys location on the map
>  'q pos'
>  xs=subwrd(result,3)
>  ys=subwrd(result,4)
>
> * display variable
>  'set gxout findstn';'d var';'xs';'ys
>   say 'findstn: 'result
> * codstn is station code, lonstn and latstn are station coordinates.
>   codstn=subwrd(result,1);lonstn=subwrd(result,2);latstn=subwrd(result,3)
>
> Bye.
>
> Daniele
>
> ----- Messaggio originale -----
> Da: "Stephen McMillan" <smcmillan at planalytics.com>
> A: "GrADS Users Forum" <gradsusr at gradsusr.org>
> Inviato: Venerdì, 27 agosto 2010 23:40:44
> Oggetto: [gradsusr] Gxout Findstn
>
> Does anyone have a WORKING example of the graphics output type
> "findstn"?  I don't need the whole or even a partial script, just an
> example of the correct syntax.  I searched in the User Archive and
> searched the internet for it, but came up empty.  Usage note No. 5
> under "set gxout" in the Documentation Index has a description, but
> offers no example.  I have tried various combinations of what it says,
> without any luck.  I have not figured out how to incorporate the three
> arguments listed in the display command.
>
> I am using a valid station dataset with snowfall values over North
> America.  The associated station ID's are 5- to 6-digit numbers.  I
> have no problem displaying the snowfall values on a map.
>
> Thanks
> Stephen McMillan
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