[gradsusr] wind vectors

[giacomo tricarico]

Oh and I add a fourth question to the three below: how could I convert the m/s values (the arrow size) into km/h?

From: mino-98 at hotmail.it
To: gradsusr at gradsusr.org
Subject: RE: [gradsusr] wind vectors
Date: Mon, 17 Aug 2015 12:50:39 +0200




Thank you all very much! There are few other thing I would like to understand:1)So I could skip either the U Component or the V component, it would be the same, wouldn't it?E.g. 'd skip(UGRD10m,5,5);VGRD10m' is the same as 'd skip(VGRD10m,5,5);UGRD10m'?
2)What is exactly the skip function?
3)To use 'gxout shaded' I should use the same code or should I use a squareroot to extract the scalar value?
Thanks!
> From: TAlHosary at ncms.ae
> To: gradsusr at gradsusr.org
> Date: Mon, 17 Aug 2015 08:57:08 +0000
> Subject: Re: [gradsusr] wind vectors
> 
> Hi,
> If the components of wind are u & v
> You can use the following commands and 6 is the distance between grid and you can change as you like
> 
> 'set gxout vector'
> 'd skip(u,6,6);v'
> 
> or
> 'set gxout barb'
> 'd skip(u,6,6);v'
> 
> Regards,
> alhosari
> 
> -----Original Message-----
> From: gradsusr-bounces at gradsusr.org [mailto:gradsusr-bounces at gradsusr.org] On Behalf Of Chorley Weather
> Sent: 17/ربيع الأول/2015 12:21 م
> To: GrADS Users Forum
> Subject: Re: [gradsusr] wind vectors
> 
> On 15-08-2015 03:39, giacomo tricarico wrote:
> > Hi, how could I plot 10m wind vectors on grads 2.0.x?
> > I only have U and V components, respectively UGRD10m and VGRD10m.
> > 
> > I've tried this:
> > 'd UGRD10m;skip(VGRD10m,5)'
> > but I don't know if it's correct.
> > 
> > Thanks in advance,
> > Giacomo
> > 
> > _______________________________________________
> > gradsusr mailing list
> > gradsusr at gradsusr.org
> > http://gradsusr.org/mailman/listinfo/gradsusr
> Hi Giacomo,
> 
> Try this bit of script and just adjust the value (2,2) to make it fit on your map projection. Hope this helps.
> 'set gxout vector'
> 'set ccolor 1'
> 'd skip(ugrd10m,2,2);vgrd10m'
> 'set cint 5'
> 'set clab masked'
> 
> Regards,
> Stuart.
> --
> Chief Forecaster & Owner
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