st: Rolling window correlations for all possible pairs of variables

[<A.C.Tuncer@lse.ac.uk>]

Dear Stata List,

I have a time series dataset consisting of more than several hundreds of variables, and roughly 1500 time points. 
 
I want to calculate rolling window correlations for each possible pairs of the variables, and store the results either in a new data set or generate new variables for each possible combination (for instance for var 1 and var2, it is rho1_2, for var1 and var3 it is rho1_3 and so on). Doing this manually is quite inefficient and time consuming. 
 
I tried to combine "mvcorr" with "by" command however I receive the error message that "mvcorr may not be combined with by". 
 
I also tried to use "rolling" command with the following syntax, however it did not work either.
 
rolling, window(36) saving("C:file location") : correlate var*
 
I would appreciate any suggestions.
 
Regards,
 
Coskun Tuncer

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