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Re: st: Re: Stata matrix to Mata matrix form - Turn lower diagonal matrix
From
Scott Merryman <[email protected]>
To
[email protected]
Subject
Re: st: Re: Stata matrix to Mata matrix form - Turn lower diagonal matrix
Date
Thu, 1 Nov 2012 12:14:37 -0500
On Thu, Nov 1, 2012 at 11:46 AM, Bianca B. <[email protected]> wrote:
>
> mat_S2[1,2] is the name of the matrix.
>
> mat_S2
>
> 1 2
> +---------+
> 1 | 0 |
> | 1 0
> |
> > >+---------+
> I found this old post
> http://www.stata.com/statalist/archive/2007-02/msg00156.html
>
> where there is exactly my same question that is to turn my lower-triangular matrix, named mat_S2, into a symmetrical matrix by reflecting the lower triangular elements across the diagonal.
>
It already is - the upper triangle is not displayed but it does exist.
For example:
mata
a = 0,1 \ 1,0
a
a[1,2]
a[2,1]
vec(a)
end
Scott
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