[gradsusr] Error in Temporal Correlation

Sourabh Shrivastava sourabh.vds at gmail.com
Sat Jun 25 11:46:58 EDT 2016


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
> <javascript:_e(%7B%7D,'cvml','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
>> <javascript:_e(%7B%7D,'cvml','sourabh at ncmrwf.gov.in');>;
>> NCMRWF website: www.ncmrwf.gov.in
>>
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>>
>>
>
>
> --
> 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
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