<div dir="ltr">just use the command like the following according to your need ..<div><br></div><div>open your file and then open mask file as second ... then use the following command ...<br><div><br></div><div style>x=maskout(your_var,mask.2(t=1))</div>
</div><div style><br></div><div style>Cheers,</div><div style><br></div><div style>Kishore</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Nov 7, 2013 at 9:45 AM, Celso Bandeira de Melo Ribeiro <span dir="ltr"><<a href="mailto:celso.bandeira@ufjf.edu.br" target="_blank">celso.bandeira@ufjf.edu.br</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello Alejandro Meza and grads users,<br>
My name is Celso and I am trying extract daily precipitation from Merge<br>
TRMM by INPE (NATIONAL INSTITUTE OF RESEARCH SPATIAL - Brasil) using<br>
maskout function, same that you did.<br>
I did one maskout ctl using MetoInfo software, following the same<br>
proceedings but I don't know how to use this mask in grads.<br>
The maskout ctl is:<br>
<br>
DSET am_maskaut.dat<br>
TITLE Mask data<br>
UNDEF -9999<br>
XDEF 245 LINEAR -82.8 0.2<br>
YDEF 313 LINEAR -50.2 0.2<br>
ZDEF 1 LINEAR 1 1<br>
TDEF 365 LINEAR 1Jan1998 1dy<br>
VARS 1<br>
mask 0 99 background mask data<br>
ENDVARS<br>
<br>
Looking forward for any help.<br>
Thank you,<br>
Celso<br>
<br>
____________________________________________<br>
Celso Bandeira de Melo Ribeiro<br>
Universidade Federal de Juiz de Fora - UFJF<br>
Faculdade de Engenharia, Plataforma 4<br>
Departamento de Engenharia Ambiental e Sanitaria<br>
Bairro Martelos, Juiz de Fora (MG) CEP. 36036-900<br>
tel. (32) 2102-3400<br>
Visiting Scholar in Texas A&M University<br>
<br>
<br>
On Fri, 25 Oct 2013 12:57:30 -0400, Jennifer Adams <<a href="mailto:jma@cola.iges.org">jma@cola.iges.org</a>><br>
wrote:<br>
<div><div class="h5">> Try using a local override of the time index in your expression, like<br>
this:<br>
> ga-> sst2 = maskout(sst1,mask.2(t=1))<br>
><br>
> --Jennifer<br>
><br>
> On Oct 25, 2013, at 12:45 PM, Alejandro Meza Mayorga wrote:<br>
><br>
>> Hello grads users. I have netcdf file containing daily sst data over a<br>
>> year, and I need to extract the grid data over an irregular area for<br>
each<br>
>> day, so I used the maskout function.<br>
>><br>
>> First I created a shapefile for the area that I needed using ArcGis<br>
>> software (1.png).<br>
>><br>
>> Then I followed the instructions posted in a previous thread by Dr.<br>
>> Yaqiang Wang<br>
>> (<a href="http://gradsusr.org/pipermail/gradsusr/2013-April/034603.html" target="_blank">http://gradsusr.org/pipermail/gradsusr/2013-April/034603.html</a>). So<br>
using<br>
>> MeteoInfo software I made a grads maskout data with the shapefile<br>
>> (2.png), and I changed the TDEF in the maskout ctl file just as stated<br>
>> (3.png).<br>
>><br>
>> The maskout works fine for the first day (t=1) of the data (4.png), but<br>
>> the problem is that when I try to use another 't' different than 1 it<br>
>> gives an error (5.png).<br>
>><br>
>> I hope you could give some ideas of what the error might be. Is it a<br>
>> mistake of how to create the shapefile, or an error in the control<br>
file?<br>
>><br>
>> Looking forward for your help. Thanks in advance.<br>
>><br>
>> Alejandro.<br>
>><br>
>><br>
>><br>
<1.png><2.png><3.png><4.png><5.png>_______________________________________________<br>
>> gradsusr mailing list<br>
>> <a href="mailto:gradsusr@gradsusr.org">gradsusr@gradsusr.org</a><br>
>> <a href="http://gradsusr.org/mailman/listinfo/gradsusr" target="_blank">http://gradsusr.org/mailman/listinfo/gradsusr</a><br>
><br>
> --<br>
> Jennifer M. Adams<br>
> Center for Ocean-Land-Atmosphere Studies (COLA)<br>
> 111 Research Hall, Mail Stop 2B3<br>
> George Mason University<br>
> 4400 University Drive<br>
> Fairfax, VA 22030<br>
<br>
</div></div>--<br>
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