[gradsusr] Crop country boundary or masking an area - still not working

[Rafanoharana Serge Claudio]

Dear Yaqiang,

Thank you for your email. I will work on it and let you know ASAP.

Best Regards,

Serge


On Sat, Sep 10, 2011 at 7:57 PM, Yaqiang Wang <yaqiang.wang at gmail.com>wrote:

> You can use maskout function to crop your grid data. Or use basemap
> script to 'crop' your figure.
>
> On Sat, Sep 10, 2011 at 11:57 PM, Rafanoharana Serge Claudio
> <rafanoharana at gmail.com> wrote:
> > Dear John,
> >
> > Thank you for your answer. I do have ogr2ogr and a shapefile of the study
> > area. Thank you anyway for the file.
> > In your command, you only deal with .shp files, and ogr2ogr cannot be
> used
> > within GrADS.
> > The problem is that I have a .nc file which contains a variable. I want
> to
> > clip this .nc file (but not a .shp file). I am not sure that ogr2ogr can
> > deal with .nc format (I also tried but not working).
> >
> > Thanks,
> >
> > Serge
> >
> >
> > On Fri, Sep 9, 2011 at 1:09 PM, Huddleston, John
> > <Huddleston at cira.colostate.edu> wrote:
> >>
> >> Serge
> >>
> >>
> >>
> >> Attached is your study area shapefile (Study_Area.shp). Use ogr2ogr to
> >> clip your data.
> >>
> >>
> >>
> >> You can get ogr2ogr from http://www.gdal.org/ogr2ogr.html or if on
> Linux
> >> use ‘apt-get install gdal-bin’.
> >>
> >>
> >>
> >> Use the following command:
> >>
> >>
> >>
> >> ogr2ogr -clipsrc Study_Area.shp output.shp Your_input_data.shp
> >>
> >>
> >>
> >> where Study_Area.shp is a shapefile in the attached zip file and
> >> Your_input_data.shp is the shapefile you want to clip.
> >>
> >>
> >>
> >> John Huddleston, PhD
> >>
> >> Cooperative Institute for Research in the Atmosphere
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> From: gradsusr-bounces at gradsusr.org [mailto:
> gradsusr-bounces at gradsusr.org]
> >> On Behalf Of Rafanoharana Serge Claudio
> >> Sent: Friday, September 09, 2011 12:59 PM
> >> To: GrADS Users Forum
> >> Subject: [gradsusr] Crop country boundary or masking an area - still not
> >> working
> >>
> >>
> >>
> >> Dear all,
> >>
> >> I've already posted this message before but I can't get it worked.
> >> If any of you have any idea to crop the study area, please let me know.
> >> One said that it is possible to grab a shapefile of the top part  and
> fill
> >> it with black (I guess he meant re-setting the value of the variable
> covered
> >> by this shapefile to 0). If you have any experience or any tips on how
> to do
> >> that, thanks in advance for your help.
> >>
> >> Kind regards,
> >>
> >> Serge
> >>
> >> ---------- Forwarded message ----------
> >> From: Rafanoharana Serge Claudio <rafanoharana at gmail.com>
> >> Date: Fri, Aug 26, 2011 at 7:53 AM
> >> Subject: Crop country boundary
> >> To: GrADS Users Forum <gradsusr at gradsusr.org>
> >>
> >>
> >> Dear all,
> >>
> >> I would like to ask if there is a way to crop the data to a specific
> area.
> >> In GrADS, if we use 'set mpdset hires', we have the country boundary.
> >> However for my case I only need the study area (please refer to the
> attached
> >> file).
> >>
> >> I found that http://www.diva-gis.org/datadown provides Grid data. Can
> we
> >> use the data from this Website to crop it or...?
> >>
> >> Thank you,
> >>
> >> --
> >> Serge
> >>
> >>
> >> --
> >> Serge
> >>
> >> _______________________________________________
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> >> gradsusr at gradsusr.org
> >> http://gradsusr.org/mailman/listinfo/gradsusr
> >>
> >
> >
> >
> > --
> > Serge
> >
> > _______________________________________________
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> > gradsusr at gradsusr.org
> > http://gradsusr.org/mailman/listinfo/gradsusr
> >
> >
>
>
>
> --
> *************************************************
> Dr. Yaqiang Wang
> Chinese Academy of Meteorological Sciences (CAMS)
> 46, Zhong-Guan-Cun South Avenue
> Beijing, 100081
> China
>
> yaqiang.wang at gmail.com
> **************************************************
>
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>



-- 
Serge
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