[gradsusr] temporal correlation

[Jennifer Adams]

It looks like the data sets pr.1 and pr.2 do not have the same time  
axis. What do the tdef statements look like? Which is the default file  
you set before invoking tcorr?
--Jennifer


On Feb 11, 2011, at 1:45 PM, Ismaila Diallo wrote:

> Dear,
>
> i have model and observation data and i want to calculate the temporal
> correlation between these variables. i use grads version Version  
> 2.0.a7: I try
> this command: tcorr(aa,bb,t=t1,t=t2)
>
> like the following script
>
> define aa=pr.1
> define bb=pr.2
> define cc=tcorr(aa,bb,t=151,t=273)
> d cc
>
> therefore i get this error:
> define r1=tcorr(aa,bb,t=151,t=273)
> TCORR:  dim = 3, start = 151, end = 273
> Data Request Error: Invalid grid coordinates
>  World coordinates convert to non-integer  grid coordinates
>    Variable = aa  Dimension = 3
> Error from TCORR:  Error getting grids
> Operation Error:  Error from tcorr function
>  Error ocurred at column 1
> DEFINE error:  Invalid expression.
>
>
> Since a week i posted this difficult but until now i didn't receive  
> help from
> grads forum so i need your help and
>
> All comment are welcome.
>
> Sincerely
>
> ismaila
>
>
>
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--
Jennifer M. Adams
IGES/COLA
4041 Powder Mill Road, Suite 302
Calverton, MD 20705
jma at cola.iges.org



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