[gradsusr] How to read CMORPH data

Fri Feb 1 09:04:56 EST 2013

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 Graham <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 in ftp://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.
>>>>
>>>>
>>>>
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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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>>> http://gradsusr.org/mailman/listinfo/gradsusr
>> ------------------------------------------------------------------------
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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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