Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
| From | Nick Cox <njcoxstata@gmail.com> |
| To | "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |
| Subject | Re: st: Sorting data in deciles and then regressing and storing coefficients. (Looping) |
| Date | Thu, 11 Jul 2013 12:11:01 +0100 |
Some further details: > 1. I am using -xtile-. Typing -which xtile- in Stata shows me: > *! version 3.1.6 04feb2013 > Yet typing -which _gxtile- gives me: > > *! _gxtile version 1.2 UK 08 Mai 2006 > > What would be the difference here as I don't know. -which xtile- shows which version of the -xtile- command you are using. The -xtile- command is defined by an .ado file and is part of official Stata. -which _gxtile- shows which version of an -xtile()- function for -egen- you are using. The -xtile()- function is also defined by an .ado file. The arcane detail here is that -egen- expects its functions to be defined by programs whose names become with the letters "_g". (Using that prefix for programs for other purposes remains possible.) This function is accessible to you only become you or somebody else downloaded it from SSC as part of the -egenmore- package. It is documented under -help egenmore-. > -egen portfolio = rowtotal( portfolio_1964 portfolio_1965 portfolio_1966 > portfolio_1967 portfolio_1968 portfolio_1969 portfolio_1970 portfolio_1971 > portfolio_1972 portfolio_1973 portfolio_1974 portfolio_1975 portfolio_1976 > portfolio_1977 portfolio_1978 portfolio_1979 portfolio_1980 portfolio_1981 > portfolio_1982 portfolio_1983 portfolio_1984 portfolio_1985 portfolio_1986 > portfolio_1987 portfolio_1988 portfolio_1989 portfolio_1990 portfolio_1991 > portfolio_1992 portfolio_1993 portfolio_1994 portfolio_1995 portfolio_1996 > portfolio_1997 )- > -drop portfolio_1964 portfolio_1965 portfolio_1966 portfolio_1967 > portfolio_1968 portfolio_1969 portfolio_1970 portfolio_1971 portfolio_1972 > portfolio_1973 portfolio_1974 portfolio_1975 portfolio_1976 portfolio_1977 > portfolio_1978 portfolio_1979 portfolio_1980 portfolio_1981 portfolio_1982 > portfolio_1983 portfolio_1984 portfolio_1985 portfolio_1986 portfolio_1987 > portfolio_1988 portfolio_1989 portfolio_1990 portfolio_1991 portfolio_1992 > portfolio_1993 portfolio_1994 portfolio_1995 portfolio_1996 portfolio_1997- Should be replaceable with egen portfolio = rowtotal(portfolio_1???) or egen portfolio = rowtotal(portfolio_*) Nick njcoxstata@gmail.com On 11 July 2013 11:16, C. Evans <ce306@cam.ac.uk> wrote: > > This was because the command created portfolios for all of the years in my > dataset which was 1964 to 1997. I just wanted one variable to display all of > the portfolio numbering and as such used -rowtotal- and then dropped the > other portfolio variables. > > Thanks again for all the help with this problem, > Chris > > > On Jul 10 2013, Nick Cox wrote: > >> 1. The version of -xtile()- on SSC is >> >> *! _gxtile version 1.2 UK 08 Mai 2006 >> >> Your version statement must refer to something else. >> >> 2. -rowtotal()- is part of -egen-, i.e. part of official Stata. >> >> 3. The command >> >> egen portfolio = rowtotal() >> >> isn't legal. Please say what you did use to get better advice. >> >> Nick >> njcoxstata@gmail.com >> >> On 10 July 2013 18:06, C. Evans <ce306@cam.ac.uk> wrote: >>> >>> >>> Jeph, thanks for the suggestion it solved my problem (suggestion can be >>> seen below). My version of -xtile()- which can be found in -egenmore- SSC. >>> Is : version 3.1.6 04feb2013 . I'm using Stata 12.1. My aim was to create 10 >>> 'portfolios' a year based on -size- . Jeph's code and then -rowtotal()- >>> solves this. >>> >>> The output that the command produced is below. I then used: >>> >>> egen portfolio = rowtotal() >>> >>> which is also from -egenmore- (SSC). -sample()- as I suggested earlier >>> was not needed. -sample()- was just to reduce the number of observations by >>> drawing a random sample from my dataset and using that instead of the full >>> dataset. >>> >>> >>> id year size por~1964 por~1965 por~1966 por~1967.... | >>> >>> |----------------------------------------------------------------------| >>> 1. | 10006 1964 219303.1 8 . . . | >>> 2. | 10006 1965 249306.1 . 8 . . | >>> 3. | 10006 1966 272942.9 . . 8 . | >>> 4. | 10006 1967 277828.9 . . . 7 | >>> 5. | 10006 1968 291790.6 . . . . | >>> >>> |----------------------------------------------------------------------| >>> 6. | 10006 1969 289380.5 . . . . | >>> 7. | 10006 1970 244459.8 . . . . | >>> 8. | 10006 1971 297727.2 . . . . | >>> 9. | 10006 1972 267790.8 . . . . | >>> 10. | 10006 1973 256238.1 . . . . | >>> >>> |----------------------------------------------------------------------| >>> 11. | 10006 1974 240341.8 . . . . | >>> 12. | 10006 1975 230729.7 . . . . | >>> 13. | 10006 1976 285526.4 . . . . | >>> 14. | 10006 1977 304096.8 . . . . | >>> 15. | 10006 1978 291149.2 . . . . | >>> >>> Thanks for all of the help, >>> Chris > > * > * 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/ * * 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/