[gradsusr] correlation map

[Stefano Materia]

Hi all,
this question has been asked many times, but nobody has ever provided an
answer yet.

How can I create a correlation maps in Grads?
I have two monthly time series of soil moisture (120 months), and I would
like to have a point-to-point correlation between them. Basically, i need
to correlate the time series of each grid point in dataset no.1 with the
time series of the corresponding grid point in dataset no.2. In this way,
I would obtain a map of correlations.

Any help would be very much appreciated.

Ciao,
Stefano


> Hi
>
> I have 20 year composite in which i have two variables (meridional and
> zonal wind speeds). I'm using the NCEP/NCAR reanalysis data from 1989 to
> nov2008.
> I need a (spatial) map of correlation coefficients for that period.
>
> I've explored the functions tcorr and scorr, but none of them is suitable
> for that. The tcorr function requires that the first variable is only a
> function of time, which is not in my case.
>
> Thanks is advance
>
> Sushant
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-- 
Stefano Materia, PhD
Centro Euro-Mediterraneo sui Cambiamenti Climatici
Viale Aldo Moro, 44 - 40127 Bologna
Tel: +39 051 3782611
Fax: +39 051 3782655