[gradsusr] How to read CMORPH data
Bob Kuligowski - NOAA Federal
bob.kuligowski at noaa.gov
Thu Feb 7 09:11:17 EST 2013
Dear Marwan,
That's the directory I use; the control files and README files are
in that directory and the data are located in the subdirectory. You
just need to make sure you use the right control file for the data you
want, and you can confirm that by comparing the file name in the DSET
entry with the file type you are using.
As far as opening all of the files using one .ctl file, I've never
tried it but it might be possible...hopefully someone else in this
listserv can help you there.
Cheers,
Bob
> Dear Bob,
> Could you provide me with FTP link to download the CMORPH daily data .
> I was looking through this ftp link but I think there has been changes
> to it. I was able access to all the historical database and I know
> that CMORPH data began on 2002 up to now.
> ftp://ftp.cpc.ncep.noaa.gov/precip/global_CMORPH/
> For the CMORPH+MWCOMB_025deg-3hr.ctl
> <ftp://ftp.cpc.ncep.noaa.gov/precip/global_CMORPH/CMORPH+MWCOMB_025deg-3hr.ctl>
> if go into this ctl file and try to open it, it would not allow you to
> access the data I am not sure why.
> and thanks I was able to open the daily CMORPH file. However, I want
> to try to open all flies using one ctl file is that possible
> Best regards,
> Marwan
> *From:* Bob Kuligowski - NOAA Federal <mailto:bob.kuligowski at noaa.gov>
> *Sent:* Wednesday, February 06, 2013 7:00 AM
> *To:* gradsusr at gradsusr.org <mailto:gradsusr at gradsusr.org>
> *Subject:* Re: [gradsusr] How to read CMORPH data
> Dear Marwan,
>
> I only see the .ctl file and a screenshot in the attachment; there
> is no binary file attached. However, the file name is not the standard
> file name for CMORPH files...where are you getting the file from?
>
> Also, please delete the 'template' entry from OPTIONS. I don't
> see a need for it and it will keep GrADS from informing you that the
> source file is missing.
>
> Cheers,
> Bob
>> Dear Bob,
>> I really value your help however I am not sure why is this ctl file
>> would not work with the binary file that I have included also in the
>> attachment.
>> Is there is anyway I can change this file into NetCDF or Ascii file,
>> which I know how to use.
>> If you could take a look at the files, and tell me what I am doing
>> wrong.
>> Also, you could see the error message
>> P.S.
>> PC user ( cygwin)
>> *From:* Bob Kuligowski - NOAA Federal <mailto:bob.kuligowski at noaa.gov>
>> *Sent:* Monday, February 04, 2013 6:03 AM
>> *To:* gradsusr at gradsusr.org <mailto:gradsusr at gradsusr.org>
>> *Subject:* Re: [gradsusr] How to read CMORPH data
>> Dear Marwan,
>>
>> My .ctl file is attached. It assumes that the target file is
>> located in the same directory as the .ctl file. Please make sure
>> that the file name in the DSET entry is exactly the same as the file
>> you are using.
>>
>> You should not need to define the contour line values at all to
>> get the display to work; I didn't need to do that. However, you will
>> want to multiply the value of 'cmorph' by 0.2 in order to get units
>> of mm/h.
>>
>> Cheers,
>> Bob
>>
>>> Dear Bob,
>>> I have followed the steps you have suggested and I was able to open
>>> the file only, yet I could not display of the input file. I am still
>>> getting the same error message.
>>> "entire grid undefined"
>>> In step two:
>>> DSET entry: I could not find the typo error "intrp" to " interp"
>>> If you could send me the corrected ctl file to try it will be great.
>>> Do I need to define each contour line value to enable me display?
>>>
>>> Best rgards,
>>> Marwan
>>> *From:* Bob Kuligowski - NOAA Federal <mailto:bob.kuligowski at noaa.gov>
>>> *Sent:* Friday, February 01, 2013 6:04 AM
>>> *To:* gradsusr at gradsusr.org <mailto:gradsusr at gradsusr.org>
>>> *Subject:* Re: [gradsusr] How to read CMORPH data
>>> Dear Marwan,
>>>
>>> I just tried it and got the same result, but I was able to fix
>>> it and make it work. You will need to make four changes in the .ctl
>>> file:
>>>
>>> 1. DSET entry: Put your data path in the "your-data-set-path" section.
>>> 2. DSET entry: Change "intrp" to "interp" in the file name (it's a
>>> typo and I just notified the developer).
>>> 3. DSET entry: Put the date of the file you're interested in in the
>>> "%y4%m2%d2%h2" part.
>>>
>>> (To summarize the first three points, the file name in the DSET
>>> entry should EXACTLY match the name of the file you're trying to plot).
>>>
>>> 1. If your machine is little Endian rather than big Endian, change
>>> the OPTIONS entry from "big_endian" to "little_endian". (If
>>> you're not sure, just try both. The bad one will give you
>>> nonsensical values).
>>>
>>> One other suggestion is to get rid of the "template" option in
>>> the OPTIONS entry. It has its uses, but one of the bad things about
>>> it is that it stops GrADS from giving an error message if it can't
>>> find the actual file (hence it didn't yell about any of the issues
>>> in changes 1-3 which kept it from finding the file) and it kept me
>>> from realizing the problem sooner.
>>>
>>> Cheers,
>>> Bob
>>>> Hi NICK and Bob,
>>>>
>>>> I am deeply thankful for all of your help and support but could you give me a reason why l am getting this error message ^entire grid undefined ^
>>>>
>>>> IS it becuase i did not set the range of vlues if not could anyone help me with that as in script or code
>>>>
>>>> Nicholas Grahammailto:ngraham at hrc-lab.org wrote:
>>>>
>>>> Hello Marwan,
>>>>
>>>> From looking at a fortran The CMORPH data files are flat (only data)
>>>> files - the data are big-endian 4-byte floating point numbers.
>>>> You can read the data in to GrADS and process it as you like. You could
>>>> also read the gridded data in Matlab using "fread" and extract or process
>>>> the data at the point of interest.
>>>>
>>>> regards - Nick
>>>>
>>>> Marwan Kheimi wrote:
>>>>> Dear Bob,
>>>>>
>>>>> Could you be more a specific about what type of program I should be
>>>>> using because I am new to this. I am trying to simple calculation such as
>>>>> Regression analysis, Correlation, RMS
>>>>> Also, I am trying to compute the annual, monthly, 10-daily, daily for
>>>>> a specific coordinate and plot.
>>>>>
>>>>> I was working on matlab because I am familiar with it but now with
>>>>> CMORPH files I am not sure what use. I am kinda of beginner user.
>>>>> However, I am a fast learner if you could guide through the process or
>>>>> at least referring to me some website that would be great.
>>>>>
>>>>> Best regards,
>>>>> Marwan
>>>>>
>>>>>
>>>>>
>>>>> On Jan 31, 2013, at 6:36 AM, "Bob Kuligowski - NOAA Federal"
>>>>> <bob.kuligowski at noaa.gov mailto:bob.kuligowski at noaa.gov> wrote:
>>>>>
>>>>>> Dear Marwan,
>>>>>>
>>>>>> The only way I know to plot CMORPH data is to use the control files
>>>>>> and README guidance inftp://ftp.cpc.ncep.noaa.gov/precip/global_CMORPH/.
>>>>>>
>>>>>> Cheers,
>>>>>> Bob
>>>>>>
>>>>>>> Hi gradusers,
>>>>>>>
>>>>>>> I have been trying to open and plot these data but before that is
>>>>>>> there is anyway to change there extension from binary to familiar
>>>>>>> extenstion as in HDF NetCDF or Asccii file.
>>>>>>>
>>>>>>> Also, is there is away to install grad into windows os or is it
>>>>>>> better to use ubuntu linxus distribution or any other referrals. I
>>>>>>> am new on this but I wish someone could have some experience with
>>>>>>> that to help/ share.
>>>>>>>
>>>>>>> Thank you all for your help in advance.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> gradsusr mailing list
>>>>>>> gradsusr at gradsusr.org mailto:gradsusr at gradsusr.org
>>>>>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>>>>
>
> --
> Bob Kuligowski, Ph.D.
> Meteorologist
> NOAA/NESDIS/Center for Satellite Applications and Research (STAR)
>
> Mailing Address:
> National Oceanic and Atmospheric Administration
> NESDIS STAR/SMCD
> Bob Kuligowski
> NCWCP E/RA2
> 5830 University Research Court
> 2nd Floor, Office #2828
> College Park, MD 20740-3818
>
> Phone: (301) 683-3593
> Fax : (301) 683-3616
>
> http://www.star.nesdis.noaa.gov/star/Kuligowski_B.php
> http://www.star.nesdis.noaa.gov/smcd/emb/ff/index.php
>
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--
Bob Kuligowski, Ph.D.
Meteorologist
NOAA/NESDIS/Center for Satellite Applications and Research (STAR)
Mailing Address:
National Oceanic and Atmospheric Administration
NESDIS STAR/SMCD
Bob Kuligowski
NCWCP E/RA2
5830 University Research Court
2nd Floor, Office #2828
College Park, MD 20740-3818
Phone: (301) 683-3593
Fax : (301) 683-3616
http://www.star.nesdis.noaa.gov/star/Kuligowski_B.php
http://www.star.nesdis.noaa.gov/smcd/emb/ff/index.php
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