[gradsusr] Problem with maskout

[Kishore Ragi]

just use the command like the following according to your need ..

open your file and then open mask file as second ... then use the following
command ...

x=maskout(your_var,mask.2(t=1))

Cheers,

Kishore


On Thu, Nov 7, 2013 at 9:45 AM, Celso Bandeira de Melo Ribeiro <
celso.bandeira at ufjf.edu.br> wrote:

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