Kam Kup <[email protected]> wrote,
> I'm looking for a function that can turn a
> lower-triangular matrix into a symmetrical matrix by
> reflecting the lower triangular elements across the
> diagonal (without disturbing the original elements.)
and Maarten buis <[email protected]> replied
> -help mata makesymmetric()-
Good answer if Kam is using Mata. If he's using Stata's old matrix
language, here's how Kam could use Maarten's answer to implement a
solution:
program makesymmetric
version 9
syntax name
qui mat list `namelist' // to make sure exists
mata: st_replacematrix("`namelist'", ///
makesymmetric(st_matrix("`namelist'")))
end
-- Bill
[email protected]
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