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From |
Steve Samuels <sjsamuels@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: RE: create local from element of matrix e(b) |

Date |
Thu, 14 Oct 2010 13:36:33 -0400 |

This "feature" of e(b) is a continuing irritant, but in this case why not: local bw = _b[wavedi] Steve sjsamuels@gmail.com On Thu, Oct 14, 2010 at 1:17 PM, Nick Cox <n.j.cox@durham.ac.uk> wrote: > I know of a two-line solution > > mat b = e(b) > local bw = b[1,1] > > and I too would be interested to hear of a shorter one. > > Nick > n.j.cox@durham.ac.uk > > Claire Kamp Dush > > I am sure someone had to have asked this type of question before, but in my googling and searching of the statalist archive, I could not come across a clear answer. > > I am trying to create a local that equals an element of matrix e(b) produced by Stata following xtreg, fe. In fact, I am trying to get the first element. > > Here is what I did: > > quietly xtreg mdepc wavedi mdis_coh, fe > . matrix list e(b) > e(b)[1,3] > wavedi mdis_coh _cons > y1 .24873096 .34650713 .83985765 > > . local dif = el(e(b), 1,1) > matrix operators that return matrices not allowed in this context > r(509); > . local dif = e(b)[1,1] > invalid syntax > r(198); > . gen dif = el(e(b), 1,1) > matrix operators that return matrices not allowed in this context > r(509); > . gen dif = e(b)[1,1] > matrix operators that return matrices not allowed in this context > r(509); > > > I would appreciate any advice - I am sure I am making a really obvious mistake. > > * > * 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/ > * * 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: create local from element of matrix e(b)***From:*Nick Cox <n.j.cox@durham.ac.uk>

**References**:**st: create local from element of matrix e(b)***From:*"Claire Kamp Dush" <ckamp-dush@ehe.osu.edu>

**st: RE: create local from element of matrix e(b)***From:*Nick Cox <n.j.cox@durham.ac.uk>

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