[gradsusr] Opening hdf files

[Yaqiang Wang]

You can use HDFView to get the information first, and then to set the
information in the control file. HDFView is free avaliable at HDF
offical website.

On Wed, Jul 20, 2011 at 8:54 PM, James Ciarlo` <james.ciarlo at physics.org> wrote:
> dear gradsusr,
>
> I have a few hdf files (below) I would like to open with grads, but I am
> finding difficulty using the xdfopen function.
>
> SEVIRI_latitude.raw
> SEVIRI_longitude.raw
> SEVIRI_readme.txt
> mean_seviri_aer_oc_d3_tau550_Aug2005.hdf
> mean_seviri_aer_oc_d3_tau550_Dec2005.hdf
> mean_seviri_aer_oc_d3_tau550_Jul2005.hdf
> mean_seviri_aer_oc_d3_tau550_Jun2005.hdf
> mean_seviri_aer_oc_d3_tau550_Nov2005.hdf
> mean_seviri_aer_oc_d3_tau550_Oct2005.hdf
> mean_seviri_aer_oc_d3_tau550_Sep2005.hdf
>
>
> I tried to construct a descriptor file but cannot figure out how to access
> the information for the coordinates:
>
> DSET mean_seviri_aer_oc_d3_tau550_Aug2005.hdf
> TITLE monthly average of the daily total aerosol optical depth at 550 nm
> derived from MSG/SEVIRI
> UNDEF 99999.0
> XDEF dimension1 ? LINEAR ? ?
> YDEF dimension2  ? LINEAR ? ?
> TDEF dimension3 ? LINEAR ? ?
> VARS 1
> Aerosol_optical_depth=>aod 1 99 aerosol optical depth
> ENDVARS
>
> I don't even know if I am on the right track. Can someone help me get to an
> answer please? because I am not managing to follow the help on GrADS index.
>
> I have also attached the text file with the remaining information
>
> Regards,
>
> James
>
>
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>



-- 
*************************************************
Dr. Yaqiang Wang
Chinese Academy of Meteorological Sciences (CAMS)
46, Zhong-Guan-Cun South Avenue
Beijing, 100081
China

yaqiang.wang at gmail.com
**************************************************