[ncarg-talk] How to read Meteosat data with HDF5 format in NCL .

[Mary Haley]

Dear Seyed,

This email forum is for NCAR Graphics users, not NCL users.

Please repost your question to ncl-talk at ucar.edu. You need to subscribe
first:

http://mailman.ucar.edu/mailman/listinfo/ncl-talk

You can see lots of NCL examples of handling HDF data at:

http://www.ncl.ucar.edu/Applications/HDF.shtml

Even though these examples don't explicitly mention the "ubyte" type, the
same instructions will apply whether you're using byte or ubyte  There are
some dim_gbits examples on that page.

I'm not sure we have specific METEOSAT examples, but if you post to the
ncl-talk email list, somebody there will probably ask if you can point to
any example files.

Good luck,

--Mary

On Sun, Jul 5, 2015 at 10:07 AM, Seyed Omid Nabavi <omid.nabavy at gmail.com>
wrote:

> Dear NCL users,
> I am trying to read Meteosat 5 and 7 (on Indian Ocean) which are in HDF5
> (hf) format. As you know this format has no certain data structure. So I
> need help form some one how has experience with these data.
> My questions are:
> 1- Data type are in ubyte type and I think it should be unpacked via
> dim_gbits function (
> http://www.ncl.ucar.edu/Document/Functions/Built-in/dim_gbits.shtml).
> Hence, I need following information about Meteosat 5 and 7 in Infrared band:
>
> a) A bit-count offset to be used before the first bit chunk is unpacked.
> b) The number of bits in each bit chunk to be unpacked.
> c) The number of bits to skip between each bit chunk to be unpacked
> d) The number of bit chunks to be unpacked
>
> 2- Can you please help me to find latitude and longitude information in
> metadata?
>
> Please kindly find metadata description and part of data in Infrared band
> in the attachment.
>
> --
>
> ===========================================
>
> Seyed Omid Nabavi;
>
> PhD student, University of Vienna,
>
> Faculty of Earth Sciences, Geography and Astronomy
>
> Department of Geography and Regional Research
>
> UZA II Althanstrasse 14 A-1010 Vienna
>
> Uni. Email: seyed.omid.nabavi at unet.univie.ac.at
>
> ===========================================
>
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>
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