[gradsusr] How to Calculate Vector Wind composites using Grads

[kalyan chakravarthy]

​Dear George,

I didn't get any error message, but the output generated appears to be
wrong.
Please find the attachment.

 ​

On Thu, Feb 25, 2016 at 10:48 AM, gibies george <gibies at tropmet.res.in>
wrote:

> Did you get any error message from this script?
>
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>
> *Gibies George,**Senior Research Fellow (**CSIR)**,*
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> On 25 February 2016 at 10:02, kalyan chakravarthy <kalyan4space at gmail.com>
> wrote:
>
>> Dear Users,
>>
>> Good Morning. I want to calculate the vector wind composites during
>> active and break periods of monsoon season using grads. Below is the script
>> used to calculate the composites. But I think the script doesn't work well.
>>
>> reinit
>> set xlopts 1 3 0.15
>> Set ylopts 1 3 0.15
>> Set arrowhead -0.4
>> sdfopen uwind850mb2009.nc
>> sdfopen vwind850mb2009.nc
>> set lat -40 30
>> set lon 30 120
>> set lev 850
>> set mpdset rupres
>> set background 0
>> set display color white
>> set map 1 1 15
>> set gxout vector
>> set cthick 8
>> define u1=ave(uwnd,t=31,t=50)
>> define v1=ave(vwnd.2,t=31,t=50)
>> define u2=ave(uwnd,t=56,t=75)
>> define v2=ave(vwnd.2,t=56,t=75)
>> define u=(u1+u2)/2
>> define v=(v1+v2)/2
>> d u;v
>> draw title 850mb Composite winds during break period 2009
>> printim Breakcomposite2009.jpg
>> clear
>>
>> Thanks & Regards,
>> Kalyan
>>
>>
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