Re: [Meteosatlib-info] Level 1.5 High Rate SEVIRI image data

[Daniele B. <dbr...@ar...>]

Hi,
since as Effie pointed out hrit and .nat files are different, the 
following won't be of much help, anyway, about compiling meteosatlib:

the main issue is that you're missing gdal devel libraries (gdal-devel 
package on rhel/fedora/centos systems)

when you launch ./configure, you get a small list at the end showing 
which library the configure has been able to find on your system: once 
you install gdal devel libraries and run the configure again you should 
see "GDAL: no" switching to "GDAL: yes"

right now I don't remember which libraries are mandatory but that should 
be enough to get at the very least a different error when you compile :)

cheers,

Daniele



Il 28/05/2015 11:02, BasitAli Khan ha scritto:
> Dear Daniel,
>
> Thank you very much indeed for the response.
>
> 2.  I'm not sure about the meaning of the ".nat format" . . . . . . .
>
> In the data centre online ordering application when you click tab shopping
> trolley, the first format name under section 'Format Type' is Native. It
> is unfortunate that even the EUMETSAT do not know what to do with data
> that comes in this format. I asked them as how can i convert this '.nat'
> format to any other format, and there response was "We have NO software
> for the conversion at this moment in time". However, the bulk data comes
> only in this strange .nat format so i asked them, as how one can read
> these data if cannot convert it. I was referred to a software tool in the
> EUMETSAT repository named MSG Native Image Reader
>
> http://www.eumetsat.int/website/home/Data/DataDelivery/SupportSoftwareandTo
> ols/index.html?lang=EN .  This small application can only displays the
> data in .nat format. So one can't actually process it at all.
>
> I am now really confused as what to do as this (.nat) format is the only
> format that EUMETSAT uses to deliver bulk data and there seems to be
> nobody who knows about this format at all.
>
> BTW I believe that "High Rate SEVIRI Level1.5  Image data" product is
> brightness temperatures. Just wondering if I am right or making some
> mistaken here.
>
>
>
>
>
> 3. Could you please specify the errors (and/or the output of ./configure)?
> I am trying to compile meteosatlib on ubuntu 12.04. with gnu 4.6.0
> compiler. Following is the result of uname -a
>
> 3.13.0-46-generic #75~precise1-Ubuntu SMP Wed Feb 11 19:21:25 UTC 2015
> x86_64 x86_64 x86_64 GNU/Linux
>
> After unzipping, I first set the compiler variables
> export CC=gcc
> export CF=gfortran
> export CXX=g++
>
> next issued configure command as follows:
>
> ./configure --prefix=/path_to_the_dir_where_i_want_to_install_meteosatlib
>> &myConfig.log&
>
> make >&make.log&
>
> I am attaching 3 log files
> 1. config.log  ŠŠ system generated log file
> 2. myConfig.log Š.. i also saved config log
> 3. make.log  log file of make command.
>
> Please, have a look. I greatly appreciate your help and suppert in fixing
> errors in compiling this application
>
> Thanks and best regards,
>
> bas:)
>
>
>
>
> On 5/26/15 3:18 PM, "Daniele Branchini" <dbr...@ar...> wrote:
>
>> Hi, the actual developer(s) of meteosatlib are almost perpetually busy,
>> so I'm going to try to answer the question but my knowledge on the
>> subject is more on the sysadmin side rather than meteorological
>>
>> On 22/05/2015 06:50, BasitAli Khan wrote:
>>> Hi there,
>>> I am new to satellite data processing for meteorological purposes. Have
>>> few questions
>>> 1.  I have received Level 1.5 High Rate SEVIRI image data  in  the
>>> native ".nat"  format. Eumetsat provides bulk data only in this format.
>>> I am wondering how can I read this and convert it to some more
>>> conventional data format such as netCDF/HDF or GRIB. My objective is to
>>> read the data and process dust RGB using three IR channels  from MSG2
>>> and MSG3
>>>
>>> 2. I wonder if I can use meteosatlib to do this conversion.
>>
>> I'm not sure about the meaning of the ".nat format", if we're talking
>> about HRIT files then the short answer is yes, and meteosatlib comes
>> with a fancy python script that produces (among other things) dust RGB
>> images from channels IR_087, IR108 and IR120
>>
>> The long answer:
>> - you'll need EUMETSAT source code (PublicDecompWT.zip) for the
>> decompression library (please see
>> http://sourceforge.net/projects/meteosatlib/files/)
>> - the python script uses gdal-python: one of the components of
>> meteosatlib is a gdal driver that enables gdal to understand RIT, SAF
>> HDF5 and some netCDF satellite dialects
>>
>>> 3. Secondly, I was trying to compile meteosatlib on my ubuntu 12.04 with
>>> gcc 4.6.0. But getting many errors. Do I have to use certain compiler
>>> flags for gcc on ubuntu?
>>
>> Could you please specify the errors (and/or the output of ./configure)?
>>
>>>
>>> 4. Is there any proper discussion forum for meteosatlib users or this
>>> mailing list is the only source of help?
>>
>> The latter. There is also some basic information in the sourceforge wiki
>> (http://sourceforge.net/p/meteosatlib/wiki/Home/)
>>
>> Cheers,
>>
>> Daniele
>>
>>
>>
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Daniele Branchini
ARPA  Emilia-Romagna
Servizio Idro-Meteo-Clima
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