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From |
Howard Lempel <HLempel@brookings.edu> |

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

Subject |
RE: st: RE: Extract elements from string variables |

Date |
Wed, 8 Jul 2009 19:16:19 -0400 |

Nice catch. Thanks, Martin. Howie -----Original Message----- From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Martin Weiss Sent: Wednesday, July 08, 2009 7:14 PM To: statalist@hsphsun2.harvard.edu Subject: RE: st: RE: Extract elements from string variables <> Conor will have to put the returned value into single quotes, though... *** sysuse auto, clear sum rep, mean //must be `r(max)', not r(max) forval i = 1/`r(max)' { di `i' } *** HTH Martin -----Original Message----- From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Howard Lempel Sent: Donnerstag, 9. Juli 2009 01:07 To: statalist@hsphsun2.harvard.edu Subject: RE: st: RE: Extract elements from string variables This is probably not the most efficient way to solve your problem, but one method follows. Assume that you have used -split- already and your duplicate variable is equivalent to my newid from my previous example. sum duplicate forval i = 1/r(max) { replace advisor = advisorindividual`i' if duplicate==`i' } drop advisorindividual? Hope this helps. Howie -----Original Message----- From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of sontag@sas.upenn.edu Sent: Wednesday, July 08, 2009 6:53 PM To: statalist@hsphsun2.harvard.edu Subject: RE: st: RE: Extract elements from string variables Yes the names are separated by commas ---------------------------------------- > From: HLempel@brookings.edu > To: statalist@hsphsun2.harvard.edu > Date: Wed, 8 Jul 2009 18:49:46 -0400 > Subject: RE: st: RE: Extract elements from string variables > > No problem. > > Are your names separated by commas, then? > > -----Original Message----- > From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of sontag@sas.upenn.edu > Sent: Wednesday, July 08, 2009 6:45 PM > To: statalist@hsphsun2.harvard.edu > Subject: RE: st: RE: Extract elements from string variables > > Thanks Howie, > > That is a pretty good estimate of what the data set looks like, however the names I am using are often of different forms: > Mr John Smith, Dr. Seuss, etc. > > So I don't believe that I can use -word-. > > Also, I've tried using split, but it generates new variables, which I can use to obtain my goal, but the code is then tedious and kind of disgusting, i.e > > gen advisor = advisorindividual1 if duplicate == 1. all the way through the max amount. > > and then drop the variables advisorindividual1 through 15. > > Does anyone know if it would be possible to do something along the lines of: > gen advisor = advisorindividual`i' if duplicate == `i'? > > Thanks again, > Conor > > ---------------------------------------- >> From: HLempel@brookings.edu >> To: statalist@hsphsun2.harvard.edu >> Date: Wed, 8 Jul 2009 14:57:10 -0400 >> Subject: st: RE: Extract elements from string variables >> >> Conor, >> >> An illustration of your data might help. For now, I assume that your data started out something like this, where origob is the original observation number for each group of names, newid is the new observation number, and X and Y are some other variables: >> >> origob names X Y >> 1 "Alex Charles Henry" 123 456 >> 2 "Mary Liz" 789 324 >> >> And now looks something like this: >> >> origob newid names X Y >> 1 1 "Alex Charles Henry" 123 456 >> 1 2 "Alex Charles Henry" 123 456 >> 1 3 "Alex Charles Henry" 123 456 >> 2 1 "Mary Liz" 789 324 >> 2 2 "Mary Liz" 789 324 >> >> And you want this: >> origob newid names name X Y >> 1 1 "Alex Charles Henry" "Alex" 123 456 >> 1 2 "Alex Charles Henry" "Charles" 123 456 >> 1 3 "Alex Charles Henry" "Henry" 123 456 >> 2 1 "Mary Liz" "Mary" 789 324 >> 2 2 "Mary Liz" "Liz" 789 324 >> >> >> If this is right, you can go from the second stage to the third stage by doing the following: >> >> bysort origob: gen name = word(names, _n) >> >> Hope this helps. >> Howie >> >> -----Original Message----- >> From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of sontag@sas.upenn.edu >> Sent: Wednesday, July 08, 2009 2:37 PM >> To: statalist@hsphsun2.harvard.edu >> Subject: st: Extract elements from string variables >> >> >> In the data set I have a string variable with the names of several people. However, I want to look at the relationship across each individual, so I am trying to separate the names. >> >> What I have done: expanded the observations based on how many individuals are in each observation's string variable. Labeled the duplicate observations 1, 2, 3, etc. >> >> What I need now, is a command that will take the number in my duplicates and take the corresponding individual's name with respect to its position in the string variable, separated by a comma. >> >> Any insight would be helpful. >> >> Thanks, >> Conor >> >> * >> * 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/ > > * > * 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/ * * 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/

**Follow-Ups**:**RE: st: RE: Extract elements from string variables***From:*<sontag@sas.upenn.edu>

**References**:**st: Extract elements from string variables***From:*<sontag@sas.upenn.edu>

**st: RE: Extract elements from string variables***From:*Howard Lempel <HLempel@brookings.edu>

**RE: st: RE: Extract elements from string variables***From:*<sontag@sas.upenn.edu>

**RE: st: RE: Extract elements from string variables***From:*Howard Lempel <HLempel@brookings.edu>

**RE: st: RE: Extract elements from string variables***From:*<sontag@sas.upenn.edu>

**RE: st: RE: Extract elements from string variables***From:*Howard Lempel <HLempel@brookings.edu>

**RE: st: RE: Extract elements from string variables***From:*"Martin Weiss" <martin.weiss1@gmx.de>

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