[gradsusr] Wind Barb Minimum

[Stephen McMillan]

Daniel,
You need to include the wind magnitude in your line, for example:

'd skip(u10*1.94,14,14);v10*1.94;1.94*mag(u10,v10)

Stephen McMillan

On Tue, Oct 28, 2014 at 4:32 AM, Daniel Nairn <dannairn at gmail.com> wrote:

> Hello
>
> I'm successfully running a Grads script to display 850mb winds using wind
> barbs:-
>
> for example
>
> 'define u10 = const(ugrdprs(lev=850),0,-u)'
> 'define v10 = const(vgrdprs(lev=850),0,-u)'
> 'set gxout barb'
> 'set cmin 20'
> 'd skip(u10*1.94,14,14);v10*1.94'
>
> What I would like to do is use something like 'set cmin 20' to display
> only winds above 20 kts. However, setting this in the script file doesn't
> appear to work (I still get barbs with values less than 20kts appearing).
> Should I be using something else?
>
> Thanks
>
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