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From |
"Martin Weiss" <martin.weiss1@gmx.de> |

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

Subject |
RE: st: Extracting specific elements from a matrix |

Date |
Mon, 5 Jul 2010 23:50:51 +0200 |

<> If "all at once" is desired, Roger`s -ssc d parmest- is more convenient: *********** sysuse auto, clear ds price make, not regress price `r(varlist)' , nocons capture which parmest if _rc ssc install parmest parmest, saving(betas, replace) u betas, clear l parm estimate *********** HTH Martin -----Original Message----- From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Eric Booth Sent: Montag, 5. Juli 2010 23:42 To: <statalist@hsphsun2.harvard.edu> Subject: Re: st: Extracting specific elements from a matrix <> Or you can use -svmat- to get them all at once. e.g., ******************************! clear webuse auto ds price make, not regress price `r(varlist)' , nocons mat A = get(_b) matrix li A ***** preserve clear svmat A, names(beta_) g id = _n reshape long beta_, i(id) j(beta_num) drop id save betas.dta, replace restore ***** use betas.dta, clear ******************************! ~ Eric __ Eric A. Booth Public Policy Research Institute Texas A&M University ebooth@ppri.tamu.edu Office: +979.845.6754 On Jul 5, 2010, at 3:36 PM, Dani Tilley wrote: > Hi, > > I need to extract the first element of a matrix of coefficients and store it on a variable, and repeat the process i times. I can set up the for loop and do the storing, but I don't know how to access element [i,j] of a matrix A. > > In particular, my matrix is e(b), the vector of coefficients from a regression with k explanatory variables. I tried -e(b)[1,1]- but that didn't take me far. > > Any help is appreciated. > > Thanks, > DF Tilley > > > > > * > * 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/ * * 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: Extracting specific elements from a matrix***From:*Eric Booth <ebooth@ppri.tamu.edu>

**References**:**st: Extracting specific elements from a matrix***From:*Dani Tilley <tilleydani@yahoo.com>

**Re: st: Extracting specific elements from a matrix***From:*Eric Booth <ebooth@ppri.tamu.edu>

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