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From |
Scott Cunningham <scunning@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: RE: RE: obvious error? |

Date |
Tue, 18 Oct 2005 13:56:48 -0400 |

also didn't know this either, so thank you. Extremely helpful. -sc On Oct 18, 2005, at 1:54 PM, Nick Cox wrote:

Another point is that your local macros must be in the same space as that in which your -xi: xtreg- command is issued. One of the earliest lessons in Stata programming is that -local- macros are precisely named. But I've occasionally been bitten by this in the following form: I'm defining local macros in code in the do-file editor and doing something else in the Command window. Then I forget momentarily that the local macros are invisible to the main session. The following experiment makes the point. Type local foo "foo" in the Do-file editor and then run the code. This command will be echoed to the Results window but . di "`foo'" will just show an empty string [a new line, strictly] while . mac li will show no -foo-. That is because the code in the do-file editor counts as a separate program and what you just defined exists only in its own space. This isn't a major problem, but it's a small test of understanding. P.S. for those who know it, -c_local- is a work-around. If you don't know it, you shouldn't want to ask. Nick n.j.cox@durham.ac.uk-----Original Message----- From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu]On Behalf Of Nick Cox Sent: 18 October 2005 18:39 To: statalist@hsphsun2.harvard.edu Subject: st: RE: obvious error? The best test here that you and Stata are speaking the same language is to . mac li to see what Stata is holding in local macros. If you typed, as stated here, . local x1lsr age age2 hgc then the local macro -x1lsr- will hold "age age2 hgc" and it is entirely possible that the local macro -x1- is not defined. But I can't see what is wrong with your other example. Stata is not _asking_ for last estimates. It can't see any variable names, so is presuming that you are asking for a replay; but it can't oblige, as it cannot find the last estimates from that command. Nick n.j.cox@durham.ac.uk Scott CunninghamThis is stumping me. Here's a sample of my code and the error I'm getting. I know I'm doing some obviously wrong, but it'sso obviousthat I can't see it. . local y rp . local x1lsr age age2 hgc . local x3 lsr age age2 hgc i.year state* . xi: xtreg `y' `x1', fe i(id) robust last test not found r(302); I get the same error even when I run the following regression: . xi: xtreg `y' `x3', fe i(id) robust last estimates not found r(301); So I know it's not just the fact that I'm using the -xi- operator without including the year dummies for the first FEregression. Whyis it asking me for "last estimates"?* * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/* * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

* * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: RE: RE: obvious error?***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

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