Finding Correlation coefficient

[sreenivas desamsetti]

Dear Sir/Madam,
I have two different files with the same dimension (x,y,t).
I wish to compute the Standard Deviation (SD) and correlation coefficient.
Lat time I asked the same question in the GrADS User List
They suggested me to use 'set gxout stat' command.
If I use the command it gives only one value of SD (it founds from all the available
grid points (spatial) at one time.
But I need to find the temporal correlation (temporal values have to be
used for the computation of SD) and so finally we will get
a spatial map of SD and Correlation coefficient.
Please suggest me to get this.
If any Mathematical functions are available in GrADS please let me know.
Otherwise any GrADS script file will help me to find them.
Thanking you
D Srinivas
 Desamsetti Srinivas
Research Scholar
Department of Meteorology and Oceanography
Andhra University
Visakhapatnam - 530 003
91 9491686740 (M)
sreeds82 at yahoo.com
sreeds82 at rediffmail.com



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