[gradsusr] Error in Temporal Correlation

[Kishore Ragi]

For making sure, you just check once if lat and lon are same for both the
files with ncdump -c command.

A simple trick: try to merge those files using CDO or NCO. It will show you
if you have problem with incorrect grids.

To not to get these issues, I usually merge all the variables in a single
file.

Cheers,
Kishore



*PhD student in climate science,*

*National Institute of Technology, Rourkela,*

*India- 769008*






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On Sat, Jun 25, 2016 at 9:16 PM, Sourabh Shrivastava <sourabh.vds at gmail.com>
wrote:

> My SST and Rainfall both have 0.25 degree resolution. Where i have taken
> the area average or rainfall.
>
>
> On Saturday, June 25, 2016, Jayakrishnan P.R <prjayakrishnan at gmail.com>
> wrote:
>
>> Dear Sourabh,
>>        I am afraid your SST is 1 degree resolution and the rainfall is
>> 0.25 degree. Just check this. To perform any correlation we need to have
>> both the input files as same dimension. If not you will have to regrid the
>> other to 0.25 or vice versa. Just a thought. Best Wishes.
>>
>> On Fri, Jun 24, 2016 at 8:36 PM, Sourabh Shrivastava <
>> sourabh.vds at gmail.com> wrote:
>>
>>> Dear Friends,
>>>
>>> I am trying to calculate Temporal Correlation using GRADS.
>>> My script is :
>>>
>>> 'reinit'
>>> 'open rf.25_1982_2014_jun.ctl'
>>> 'run rgbset.gs'
>>> 'set t 1 33'
>>> 'define rainclimate = ave(rain, t=1, t=33)'
>>> 'define anom = rain-rainclimate'
>>> 'define man = aave(anom, lon=74., lon=85., lat=18., lat=27.)'
>>> 'close 1'
>>> *
>>> 'open sst_jun.ctl'
>>> 'define sstclimate = ave(sst,t=1,t=33)'
>>> 'set t 1 33'
>>> 'define anomsst = sst-sstclimate'
>>> 'define a = anomsst'
>>> 'set t 1'
>>> 'define corr = tcorr(man,a,t=1,t=33)'
>>> 'd corr'
>>>
>>>
>>> and I am getting this error
>>>
>>> Data Request Error: Invalid grid coordinates
>>>   World coordinates convert to non-integer  grid coordinates
>>>     Variable = man  Dimension = 3
>>> Error from TCORR:  Error getting grids
>>> Operation Error:  Error from tcorr function
>>>   Error ocurred at column 1
>>> DEFINE error:  Invalid expression.
>>> Syntax Error:  Invalid Operand
>>>   'corr' not a variable or function name
>>>   Error ocurred at column 1
>>> DISPLAY error:  Invalid expression
>>>   Expression = corr
>>>
>>>
>>>
>>> Thanking You
>>> --
>>> SOURABH SHRIVASTAVA
>>> Scientist-C
>>> (BIMSTEC), NCMRWF
>>> Ministry of Earth Sciences
>>> A-50, Institutional Area, Sector-62,
>>> NOIDA, UP, Pin: 201 307
>>> ---------------------------------------------------------
>>> Mobile: +919555813179
>>> emails: sourabh at ncmrwf.gov.in;
>>> NCMRWF website: www.ncmrwf.gov.in
>>>
>>> _______________________________________________
>>> gradsusr mailing list
>>> gradsusr at gradsusr.org
>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>
>>>
>>
>>
>> --
>> Sincerely
>>
>> **************************************************
>> Dr. Jayakrishnan P.R
>> Post Doctoral Research Fellow
>> C308, Institute of Ocean and Earth Sciences (IOES)
>> University of Malaya
>> 50603, Kuala Lumpur
>> Tel: (+603) 7967 4640 / 6995
>> Mobile: 012-3526094
>>
>> ****************************************************
>>
>>
>>
>>
>>
>
> --
> SOURABH SHRIVASTAVA
> Scientist-C
> (BIMSTEC), NCMRWF
> Ministry of Earth Sciences
> A-50, Institutional Area, Sector-62,
> NOIDA, UP, Pin: 201 307
> ---------------------------------------------------------
> Mobile: +919555813179
> emails: sourabh at ncmrwf.gov.in;
> NCMRWF website: www.ncmrwf.gov.in
>
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
>
>
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