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Note: This FAQ is for Stata 9 and older versions of Stata.

How can I obtain the correlation matrix as a Stata matrix?

Title   Obtaining the correlation matrix
Author William Gould, StataCorp

The correlate command will report the correlation matrix of the data, but there are occasions when you need the matrix stored as a Stata matrix so you can further manipulate it. You can obtain it by typing

        . matrix accum R = varlist, nocons dev
        . matrix R = corr(R)

The first line places the cross-product matrix of the data in R. The second line converts that to a correlation matrix.