Stata 15 help for mat_put_rr

[P] matrix get -- Post test constraint matrix


mat_put_rr matname


mat_put_rr is a programmer's command that posts matname as the internal Rr matrix. matname must have one more than the number of columns in the e(b) and e(V) matrices. The extra column contains the r vector, and the earlier columns contain the R matrix for the Wald test

Rb = r

See Methods and formulas in [R] test.

The matrix ... get(Rr) command provides a way to obtain the current Rr system matrix; see [P] matrix get.


. regress y x1 x2 x3 x4 . mat z = (1,0,0,-1,0,2.8 \ 1,0,-1,0,0,0) . mat_put_rr z . test

gives the same result as

. regress y x1 x2 x3 x4 . test x1-x2=2.8, notest . test x1-x3=0, accum

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