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

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: rename |

Date |
Tue, 7 Aug 2012 23:55:22 +0100 |

You are repeating the same misunderstanding. -rename group- does not depend on there being stubs. sysuse auto rename (*) (<new list>) will work. Nick On Tue, Aug 7, 2012 at 9:29 PM, Airey, David C <david.airey@vanderbilt.edu> wrote: > . > > If I had 1000 variables and wanted to rename them to a > list of another 1000 names, what is the best way to do this? > There are no stubs, so I cannot use the rename group command > > rename (stub1-stub1000) (mystub1-mystub1000) > > I can probably get the variable names inside a single local > more easily after which I might expect this to work: > > rename (`original') (`newnames') > >> -rename- as such places absolutely no restrictions on the use of >> locals in -rename- commands for the very simple and very fundamental >> reason that all macro references are interpreted before -rename- gets >> to work. -rename- never sees any macro references, just their >> interpretations as macro contents. >> >> That said, let's emphasise that -rename-'s language is based on >> extensive use of wildcards. >> >> Either way, the heart of David's question seems to be whether a common >> stub is needed for -rename- to work well, if at all, and the answer is >> No. >> >> -rename- can be used with a first argument as general as (*), meaning >> all variables, so there are no presumptions on the structure of >> variable names. >> >> Otherwise I think we need to see concrete examples to comment on >> apparent difficulties here. >> >> Nick >> >> On Tue, Aug 7, 2012 at 6:27 PM, Airey, David C >> <david.airey@vanderbilt.edu> wrote: >> >> > With the new rename group command, can you use locals to rename a very >> > large number of variables from an old name set to a new name set where >> > there will be no stub used in either set? >> > >> > The syntax is >> > >> > rename (old1 old2) (new1 new2) >> > >> > but can locals be used inside the parentheses to represent a long list >> > of variable names to be switched? I can generate the locals using code >> > rather than typing. >> > >> > Otherwise, what is the best way to rename a whole bunch of variables >> > to new names where the variables do not have stubs. >> > >> > I can do the renaming using a reshape and merge, but it seems clunky. * * 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**:**Re: st: rename***From:*"Airey, David C" <david.airey@vanderbilt.edu>

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