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From |
Nick Cox <n.j.cox@durham.ac.uk> |

To |
"'statalist@hsphsun2.harvard.edu'" <statalist@hsphsun2.harvard.edu> |

Subject |
RE: st: RE: submatrix |

Date |
Tue, 15 Nov 2011 11:10:39 +0000 |

Yes; Stata can only regard it as an error if you refer to rows and/or columns that don't exist. Nick n.j.cox@durham.ac.uk -----Original Message----- From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of behailu ayele Sent: 15 November 2011 10:56 To: statalist@hsphsun2.harvard.edu Subject: Re: st: RE: submatrix Nick, Thanks very much. I now went to matrix extraction and I think know my problem, now. My estimation result reads only as row. Whatever I want to extract,, it works when I specify as one row and any number of columns. What I mean is, it works when I do either of these: matrix A = b[1, "b1".."b9"] matrix A = b[1, "a1".."a9"] but it says conformability error whenever I do matrix A = b[1..2, "a1".."a9"] I am thinking I need to restructure my estimation result such that it is a proper matrix to begin with (with 9 by 9 dimension) and not just a matrix with one row and several columns. Thankyou again. behailu On 11/15/11, Nick Cox <n.j.cox@durham.ac.uk> wrote: > This is covered by the help on -matrix extraction- > > matrix new = b[1..9, 7..9] > > The = operator for assignment should be used (not ==). > > Nick > n.j.cox@durham.ac.uk > > behailu ayele > > I have problem extracting parts of a matrix I estimated. > > my matrix e(b) is 9 by 9. Now I want to extract the first line and I did > this. > > matrix b=e(b) > and then > matrix new==b[1,1..9] > > my problem is when i want to have a 3 by 9 matrix of the last three columns > > is this not what I am supposed to do? > > matrix new==b[7/9,1..9] * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: RE: submatrix***From:*behailu ayele <bbezabih@googlemail.com>

**References**:**st: submatrix***From:*behailu ayele <bbezabih@googlemail.com>

**st: RE: submatrix***From:*Nick Cox <n.j.cox@durham.ac.uk>

**Re: st: RE: submatrix***From:*behailu ayele <bbezabih@googlemail.com>

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