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From |
Maarten Buis <maartenlbuis@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Batch renaming variables |

Date |
Thu, 18 Oct 2012 16:47:33 +0200 |

The one thing that may be a bit tricky is that the Mata function numtobase26() is undocumentend. It basically maps positive integers to letters such that 1=A, 2=B, ..., 26=Z, 27=AA, 28=AB, ..., 52=AZ, 53=BA, 54=BB, etc. -- Maarten On Thu, Oct 18, 2012 at 4:39 PM, Nick Cox <njcoxstata@gmail.com> wrote: > Maarten and I really used the same method, just in part implemented it > differently. > > Your problem is easy to understand, but awkward to solve without > knowing about loops and some macro manipulations. > > On Thu, Oct 18, 2012 at 3:34 PM, Wameq Raza <wameq.r@gmail.com> wrote: >> Dear Maarten and Nick, >> Thank you very much and I'll certain discuss the problem from the >> outset! The method laid out >> by Maarten worked like a charm! I'll have to spend a little more time >> understanding the syntax >> better, but my problem for now is definitely solved. >> Many thanks once again, >> Best >> Wameq >> >> On Thu, Oct 18, 2012 at 4:28 PM, Maarten Buis <maartenlbuis@gmail.com> wrote: >>> On Thu, Oct 18, 2012 at 4:03 PM, Wameq Raza wrote: >>>> The variables I have start from v0915 and continue to v1005 and I need >>>> to rename every 5th variable in this list starting from v0917. The >>>> variables to be renamed to are: cost_a, cost_b....cost_n. >>> >>> *--------------------------- begin example -------------------------- >>> // create some example data >>> clear >>> set obs 10 >>> forvalues i = 915/1005 { >>> gen v`:display %04.0f `i'' = runiform() >>> } >>> >>> // start renaming >>> local j = 0 >>> forvalues i = 917(5)1005 { >>> local j = `j' + 1 >>> mata: st_local("letter", strlower(numtobase26(strtoreal(st_local("j"))))) >>> rename v`:display %04.0f `i'' cost_`letter' >>> } >>> *---------------------------- end example --------------------------- >>> > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/faqs/resources/statalist-faq/ > * http://www.ats.ucla.edu/stat/stata/ -- --------------------------------- Maarten L. Buis WZB Reichpietschufer 50 10785 Berlin Germany http://www.maartenbuis.nl --------------------------------- * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

**References**:**st: Batch renaming variables***From:*Wameq Raza <wameq.r@gmail.com>

**Re: st: Batch renaming variables***From:*David Kantor <kantor.d@att.net>

**Re: st: Batch renaming variables***From:*Wameq Raza <wameq.r@gmail.com>

**Re: st: Batch renaming variables***From:*Maarten Buis <maartenlbuis@gmail.com>

**Re: st: Batch renaming variables***From:*Wameq Raza <wameq.r@gmail.com>

**Re: st: Batch renaming variables***From:*Nick Cox <njcoxstata@gmail.com>

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