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--></style></head><body>for magnitude:<br>d mag(u,v)*3.6<br><br>dor arrows:<br>d 3.6*u;3.6*v<br><br>for setting arrow scale:<br>http://grads.iges.org/grads/gadoc/gradcomdsetarrscl.html<br><br>Bye<br>Davide<br><br><div><span data-mailaddress="mino-98@hotmail.it" data-contactname="giacomo tricarico" class="clickable"><span title="mino-98@hotmail.it">giacomo tricarico</span><span class="detail"> <mino-98@hotmail.it></span></span> , 8/17/2015 3:49 PM:<br><blockquote class="mcnt mori" style="margin:0 0 0 .8ex;border-left:2px blue solid;padding-left:1ex;"><div class="mcnt">
<div><div>Thanks Davide! I have a <span style="color:rgb(68, 68, 68);font-size:15px;line-height:21.3px;background-color:rgb(255, 255, 255);">fourth question: how could I convert the m/s values (the wind arrows' size) into km/h?</span><div><span style="color:#444444;"><span style="font-size:15px;line-height:21.3px;">For windspeed I should multiply by 3.6, but for wind arrows?<br></span></span><br><div><hr id="mcntstopSpelling">Date: Mon, 17 Aug 2015 14:29:20 +0200<br>From: davide.sacchetti@arpal.gov.it<br>To: gradsusr@gradsusr.org<br>Subject: Re: [gradsusr] wind vectors<br><br><br><br><br><div><span class="mcntecxclickable"><span title="mino-98@hotmail.it">giacomo tricarico</span><span class="mcntecxdetail"> <mino-98@hotmail.it></span></span> , 8/17/2015 12:53 PM:<br><blockquote class="mcntecxmcnt mcntecxmori" style="border-left:2px blue solid;padding-left:1ex;"><div class="mcntecxmcnt">
<div>Thank you all very much! There are few other thing I would like to understand:<div>1)So I could skip either the U Component or the V component, it would be the same, wouldn't it?</div><div>E.g. 'd skip(UGRD10m,5,5);VGRD10m' is the same as 'd skip(VGRD10m,5,5);UGRD10m'?</div><div><br></div></div></div></blockquote></div><br>it is the same<br><br><blockquote class="mcntecxmcnt mcntecxmori" style="border-left:2px blue solid;padding-left:1ex;"><div class="mcntecxmcnt"><div>2)What is exactly the skip function?</div></div></blockquote><br> in the given ex. it sets to undef 4 values in X (and 4 values in Y) every 5 <br><br><blockquote class="mcntecxmcnt mcntecxmori" style="border-left:2px blue solid;padding-left:1ex;"><div class="mcntecxmcnt"><div>3)To use 'gxout shaded' I should use the same code or should I use a squareroot to extract the scalar value?</div></div></blockquote><br>'shaded' does not work with skip (any value is surrounded by undef) ...<br>if you want to plot 'scalar' wind use mag(UGRD10m,VGRD10m)<br><br>bye bye<br>Davide<br><br><blockquote class="mcntecxmcnt mcntecxmori" style="border-left:2px blue solid;padding-left:1ex;"><div class="mcntecxmcnt"><div><div><div><br></div><div>Thanks!</div><div><br><div>> From: TAlHosary@ncms.ae<br>> To: gradsusr@gradsusr.org<br>> Date: Mon, 17 Aug 2015 08:57:08 +0000<br>> Subject: Re: [gradsusr] wind vectors<br>> <br>> Hi,<br>> If the components of wind are u & v<br>> You can use the following commands and 6 is the distance between grid and you can change as you like<br>> <br>> 'set gxout vector'<br>> 'd skip(u,6,6);v'<br>> <br>> or<br>> 'set gxout barb'<br>> 'd skip(u,6,6);v'<br>> <br>> Regards,<br>> alhosari<br>> <br>> -----Original Message-----<br>> From: gradsusr-bounces@gradsusr.org [mailto:gradsusr-bounces@gradsusr.org] On Behalf Of Chorley Weather<br>> Sent: 17/ربيع الأول/2015 12:21 م<br>> To: GrADS Users Forum<br>> Subject: Re: [gradsusr] wind vectors<br>> <br>> On 15-08-2015 03:39, giacomo tricarico wrote:<br>> > Hi, how could I plot 10m wind vectors on grads 2.0.x?<br>> > I only have U and V components, respectively UGRD10m and VGRD10m.<br>> > <br>> > I've tried this:<br>> > 'd UGRD10m;skip(VGRD10m,5)'<br>> > but I don't know if it's correct.<br>> > <br>> > Thanks in advance,<br>> > Giacomo<br>> > <br>> > _______________________________________________<br>> > gradsusr mailing list<br>> > gradsusr@gradsusr.org<br>> > http://gradsusr.org/mailman/listinfo/gradsusr<br>> Hi Giacomo,<br>> <br>> Try this bit of script and just adjust the value (2,2) to make it fit on your map projection. Hope this helps.<br>> 'set gxout vector'<br>> 'set ccolor 1'<br>> 'd skip(ugrd10m,2,2);vgrd10m'<br>> 'set cint 5'<br>> 'set clab masked'<br>> <br>> Regards,<br>> Stuart.<br>> --<br>> Chief Forecaster & Owner<br>> _______________________________________________<br>> gradsusr mailing list<br>> gradsusr@gradsusr.org<br>> http://gradsusr.org/mailman/listinfo/gradsusr<br>> <br>> _______________________________________________<br>> gradsusr mailing list<br>> gradsusr@gradsusr.org<br>> http://gradsusr.org/mailman/listinfo/gradsusr<br></div></div> </div>
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