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------------------------------------------------------------------------ -------- The most obvious explanation is that you do have that __000003 variable present in your data set, for some strange reason (the data set was saved while -tempvar- was created, but before it was cleaned with an exit from a program). Sometimes, I do get something like that with a complicated set of nested routines and some complicated patterns of who creates and who cleans the -tempvar-s, although I would expect that Stata would try to come up with the next available -tempvar- name upon having checked that a variable already exists in the data set. The conflict like that may also arise if you deliberately drop a tempvar rather than let Stata do it. But it would be strange if this error were in the official code. On Tue, Jul 31, 2012 at 4:59 PM, <S.Jenkins@lse.ac.uk> wrote: > I am unable to run some -svy- related commands using one of my data > sets. The puzzle is that I have no problems with similar commands > applied to data from the Ref Manuals (cf. example below: uses > "stage5a.dta"). > > The issue: after -svyset-, -svy: ...- commands produce a r(110) error > > [P] error . . . . . . . . . . . . . . . . . . . . . . . . Return > code 110 > __________ already defined; > A variable or a value label has already been defined, and you > attempted to redefine it. This occurs most often with generate. > > But I had made no such attempt to redefine, as far as I know. With -set > trace on-, it seems that the command applied to my data is choking when > it makes a call to -marksample-. There's an example below: uses > "voldat.dta". > > In another example (not shown), I had been using -idonepsu- (command to > deal with singleton PSUs; on SSC), and also hit the same error, though > this time with a call to -mark- according to a -set trace on-. [Even > more strangely (to me), I have a log file from a job also using > -idonepsu and same data set, dated 6 Jul 2012, that ran without error.] > > Any ideas? > > Stata 12MP/4, fully updated. Behaviour observed on Win7/64bit and Win > XP/32bit > . display "`c(tmpdir)'" > C:\DOCUME~1\stephen\LOCALS~1\Temp/ <snip> Stephen ------------------------------------- Professor Stephen P. Jenkins <s.jenkins@lse.ac.uk> Department of Social Policy London School of Economics and Political Science Houghton Street, London WC2A 2AE, U.K. Tel: +44 (0)20 7955 6527 Changing Fortunes: Income Mobility and Poverty Dynamics in Britain, OUP 2011, http://ukcatalogue.oup.com/product/9780199226436.do Survival Analysis using Stata: http://www.iser.essex.ac.uk/survival-analysis Downloadable papers and software: http://ideas.repec.org/e/pje7.html Please access the attached hyperlink for an important electronic communications disclaimer: http://lse.ac.uk/emailDisclaimer * * 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/