Notice: On March 31, it was **announced** that Statalist is moving from an email list to a **forum**. The old list will shut down on April 23, and its replacement, **statalist.org** is already up and running.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

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

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Re lincom not recognising macros |

Date |
Tue, 26 Jun 2012 12:37:06 +0100 |

If you want to automate this, you may well end up using local macros. Efficiency is not really an issue; the time or memory cost of using a local macro is trivial, and there may be no other solution. Further advice would depend on more information about where the numbers come from. Either way, using a variable (Stata sense) to hold a constant is not regarded as a use of macros. See also http://www.stata.com/statalist/archive/2008-08/msg01258.html Nick On Tue, Jun 26, 2012 at 11:46 AM, Jennifer Dent <JDent@sgul.ac.uk> wrote: > Dear Nick > > Apologies for the typos. > > Re using the 'indirect' solution - I want to run the function several times > over several different datasets, within which the values of the (local) > variables will change slightly. I'll have a think about which is more > efficient, given the solution. > > Thank you for your help, > > Jennifer > > > On 26/06/2012 11:21, Nick Cox wrote: >> >> There are no macros (marcos, macors) here. >> >> What you may be seeking is >> >> local var1_prop = 0.46 >> local var2_prop = 0.54 >> >> lincom _b[_cons] + _b[indep1]*`var1_prop' + _b[indepvar2]*`var2_prop' >> >> although I don't see why you would prefer that to your direct >> solution, which as you say does work. >> >> Nick >> >> On Tue, Jun 26, 2012 at 11:11 AM, Jennifer Dent<JDent@sgul.ac.uk> wrote: >> >>> I'm trying to run lincom in stata 12 but I am having trouble when I use a >>> marco name, rather than a number. >>> >>> This is what I have: >>> >>> gen var1_prop = 0.46 >>> gen var2_prop = 0.54 >>> xi:xtmixed depvar indep1 indep2 || randomeffect >>> lincom _b[_cons] + _b[indep1]*var1_prop + _b[indepvar2]*var2_prop >>> >>> Error: var1_prop not found >>> >>> If I replace var1_prop and var2_prop with the actual numbers (i.e. lincom >>> _b[_cons] + _b[indep1]*0.46 + _b[indepvar2]*0.54), then stata is happy. >>> Is >>> there a way to force lincom to recognise my numeric macors by name, >>> rather >>> than to have to find and replace the names with numbers? >>> >> * >> * 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/

**References**:**st: Re lincom not recognising macros***From:*Jennifer Dent <JDent@sgul.ac.uk>

**Re: st: Re lincom not recognising macros***From:*Nick Cox <njcoxstata@gmail.com>

**Re: st: Re lincom not recognising macros***From:*Jennifer Dent <JDent@sgul.ac.uk>

- Prev by Date:
**Re: st: Re lincom not recognising macros** - Next by Date:
**Re: st: Program syntax for svy bootstrap or bs4rw** - Previous by thread:
**Re: st: Re lincom not recognising macros** - Next by thread:
**st: xtmixed crossed random effects with covariables measured at differnt levels** - Index(es):