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From |
"Nick Cox" <n.j.cox@durham.ac.uk> |

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

Subject |
st: RE: confirm |

Date |
Sun, 25 Sep 2005 17:23:36 +0100 |

This problem is a variation on two previously discussed on this list. 1. You want to -drop- variables if and only if the names specified are full variable names. Canned solution: -safedrop- on SSC 2. You want to separate a set of names into variable names and others. (Compare a very recent thread.) Canned solution: -isvar- on SSC In each case, a useful trick is throw something at -unab-. If it returns an error, that something is ambiguous or not a variable name. If you get back exactly what you sent, that something is a complete variable name. Otherwise it must be incomplete. Incomplete here includes valid wildcards. Here is a sketch: *! NJC 1.0.0 25 September 2005 * safedrop NJC 1.1.0 11 February 2003 * safedrop NJC 1.0.0 13 November 2000 program isfullvarname, sclass version 8.0 foreach v of local 0 { capture unab V : `v' if _rc local blist `blist' `v' else if "`V'" == "`v'" local flist `flist' `v' else local ilist `ilist' `v' } sreturn clear di local n : word count `blist' if `n' { local what "ambiguous or non-existent" di "{p}{txt}`what': {res}`blist'{p_end}" sreturn local notvarlist "`blist'" } local n : word count `ilist' if `n' { local what = plural(`n',"incomplete variable name") di "{p}{txt}`what': {res}`ilist'{p_end}" sreturn local notfullvarlist "`ilist'" } local n : word count `flist' if `n' { local what = plural(`n',"full variable name") di "{p}{txt}`what': {res}`flist'{p_end}" sreturn local fullvarlist "`flist'" } end Nick n.j.cox@durham.ac.uk Enzo Coviello > how can Stata 8 verify that a name match "exactly" the name > of an existing > variable, i.e. ignoring names that are abbreviations of other > variables? > > "confirm varlist, exact" in Stata 9 resolves this problem, > but in Stata 8? * * 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/

**Follow-Ups**:**Re: st: RE: confirm***From:*Enzo Coviello <enzo.coviello@alice.it>

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