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From |
Nick Cox <njcoxstata@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Re: Stata matrix to Mata matrix form |

Date |
Thu, 1 Nov 2012 15:29:39 +0000 |

Looks symmetric to me. If a matrix is symmetric, Stata says so, and only displays the lower half (including the principal diagonal). In your case, Stata is doing exactly that. Here is another example: . mata : I(3) [symmetric] 1 2 3 +-------------+ 1 | 1 | 2 | 0 1 | 3 | 0 0 1 | +-------------+ If this is not what you mean, you'll have to explain what "doesn't work" means exactly. Nick On Thu, Nov 1, 2012 at 3:16 PM, Bianca B. <bianca268@yahoo.com> wrote: > Dear Nick, > > Thanks a lot. I converted a lower-triangular matrix from stata to mata form to apply the mata makesymmetric command but it doesn't work. > The command is > > : makesymmetric(mat_S2) > [symmetric] > 1 2 > +---------+ > 1 | 0 | > 2 | 1 0 | > +---------+ > > Would you have any suggestion? > Best, > Bianca > > > > . mat foo = J(6,7,42) > > . mat li foo > > foo[6,7] > c1 c2 c3 c4 c5 c6 c7 > r1 42 42 42 42 42 42 42 > r2 42 42 42 42 42 42 42 > r3 42 42 42 42 42 42 42 > r4 42 42 42 42 42 42 42 > r5 42 42 42 42 42 42 42 > r6 42 42 42 42 42 42 42 > > . mata : mat_foo = st_matrix("foo") > > . mata : mat_foo > 1 2 3 4 5 6 7 > +------------------------------------+ > 1 | 42 42 42 42 42 42 42 | > 2 | 42 42 42 42 42 42 42 | > 3 | 42 42 42 42 42 42 42 | > 4 | 42 42 42 42 42 42 42 | > 5 | 42 42 42 42 42 42 42 | > 6 | 42 42 42 42 42 42 42 | > +------------------------------------+ > > . mata : st_matrix("foo", mat_foo :/ 7) > > . mat li foo > > foo[6,7] > c1 c2 c3 c4 c5 c6 c7 > r1 6 6 6 6 6 6 6 > r2 6 6 6 6 6 6 6 > r3 6 6 6 6 6 6 6 > r4 6 6 6 6 6 6 6 > r5 6 6 6 6 6 6 6 > r6 6 6 6 6 6 6 6 > > --- On Thu, 11/1/12, Bianca B. <bianca268@yahoo.com> wrote: > >> From: Bianca B. <bianca268@yahoo.com> >> Subject: Stata matrix to Mata matrix form >> To: statalist@hsphsun2.harvard.edu >> Date: Thursday, November 1, 2012, 7:25 AM >> Hi Stata users, >> >> Does anyone know how can I get stata matrix in mata matrix? * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: Re: Stata matrix to Mata matrix form***From:*"Bianca B." <bianca268@yahoo.com>

**References**:**st: Stata matrix to Mata matrix form***From:*"Bianca B." <bianca268@yahoo.com>

**st: Re: Stata matrix to Mata matrix form***From:*"Bianca B." <bianca268@yahoo.com>

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