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From |
Ignacio Martinez <ignacio@virginia.edu> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: RE: RE: generating a variable? |

Date |
Thu, 28 Jul 2011 17:40:41 -0400 |

Thanks Sarah On Thu, Jul 28, 2011 at 4:41 PM, Sarah Edgington <sedging@ucla.edu> wrote: > . > Your example code, in addition to being nonsense in terms of syntax, also > uses illegal variable names. Moreover, the name and number of variables > differs from what you describe having in the data. My suggested solution > ignores your example code and is based solely on your description of the > data. If your description doesn't accurately reflect what you're working > with then my suggestion may not help much. > > Here's one way to get the four year total: > > gen > total_4_year=(E01==3)+(E02==3)+(E03==3)+(E04==3)+(E05==3)+(E06==3)+(E07==3)+ > (E08==3)+(E09==3)+(E10==3)+(E11==3)+(E12==3) > > > -Sarah > > -----Original Message----- > From: owner-statalist@hsphsun2.harvard.edu > [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Nick Cox > Sent: Thursday, July 28, 2011 12:24 PM > To: 'statalist@hsphsun2.harvard.edu' > Subject: st: RE: generating a variable? > > I am very surprised that you imply that this even works at all. "then" is > just fantasy code so far as Stata is concerned. Alternatively, if this is a > mix of Stata and pseudocode, then please show us the real Stata code. > > See also > > FAQ . . . . . . . . . . . . . . . . . . . . . if command vs. if > qualifier > . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . J. > Wernow > 6/00 I have an if or while command in my program that > only seems to evaluate the first observation, > what's going on? > http://www.stata.com/support/faqs/lang/ifqualifier.html > > to learn that -if- as you (intend to) use it is not what you want. > > Nick > n.j.cox@durham.ac.uk > > Ignacio, Martinez > > I'm having troubles generating 2 new variables with my data. > > I have the following variables: ID; E01-E12 where E01 =3 indicates that i is > enrolled in a 4 year college in January, and E05=2 means that he is enrolled > in a 2 year college in may. > > I want to generate a 2 new variables Total_2_year that is the total number > of month that i is enrolled in a 2 year college and total_4_year that is the > total number of month that i is enrolled in a > 4 year college. > > What is the best way of doing this? > > My first attempt was this > <code> > *Generates vectors of total months enrolled in college gen total_2_year = 0 > gen total_4_year = 0 gen total_none = 0 > > > forvalues month=1/9 { > if 511200`month'==3 then total_4_year==total_4_year+1 > if 511200`month'==2 then total_2_year==total_2_year+1 > if 511200`month'==1 then total_none==total_none+1 > if 511200`month'==-4 then total_none==-4 > if 511200`month'==-4 then total_2_year==-4 > if 511200`month'==-4 then total_4_year==-4 > > } > > </code> > > but i get only zeros... :_( > > > * > * 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/

**References**:**st: generating a variable?***From:*Ignacio Martinez <ignacio@virginia.edu>

**st: RE: generating a variable?***From:*Nick Cox <n.j.cox@durham.ac.uk>

**st: RE: RE: generating a variable?***From:*"Sarah Edgington" <sedging@ucla.edu>

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