[gradsusr] Wind Barb Minimum

[Daniel Nairn]

Perfect, thanks Stephen.

On 28 October 2014 12:48, Stephen McMillan <smcmillan at planalytics.com>
wrote:

> 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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>>
>
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