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From |
Nick Cox <n.j.cox@durham.ac.uk> |

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

Subject |
RE: st: RE: how to store the statistics calculated in a loop as a table? |

Date |
Wed, 7 Dec 2011 18:39:12 +0000 |

-collapse- in particular should mean that you do not need to loop at all. You can calculate all the ratios of sums by a single -generate-. collapse (sum) s_EI = EI_t (sum) s_BE = BE_t_1 if inrange(trade_date_yearformat, 1990, 2010), by(FF_group_rank_0 trade_date_yearformat) gen mean_EI_BE = s_EI / s_BE Nick n.j.cox@durham.ac.uk qing ye hi, I have checked collapse and tabstat, still no ideas about how to use it combined with a loop? In the loop, everytime, I calculated one mean_EI_BE, how do I write this one result into one cell of a table where the columns and rows of the table reprsents different steps in a looping? On 8 December 2011 02:08, qing ye <yeqing1013@gmail.com> wrote: > Thanks for the quick reply. > > I will check the help file for collapse and tabstat > > the group takes the value of 1-6, and the varible FF_group_rank_0 > takes values of 1-6 stating six groups, so I want to loop for each > group, I guess I need to use forvalues rather than foreach? On 8 December 2011 02:00, Nick Cox <n.j.cox@durham.ac.uk> wrote: >> I'd look at -collapse- and/or -tabstat-. >> >> In any case, your loop >> >> foreach group of varlist FF_group_rank_0 { >> >> } >> >> will do nothing as `group' is never referred to inside the loop. That probably doesn't matter, but it shows some confusion about what -foreach- does. qing ye >> Do any of you know how to report the results calculated after the loop >> as tables?? >> >> forvalues i=1990 (1)2010 { >> foreach group of varlist FF_group_rank_0 { >> forvalues n=1(1)6{ >> >> >> quietly sum EI_t if >> trade_date_yearformat==`i' &FF_group_rank_0==`n' >> local s_EI=r(sum) >> quietly sum BE_t_1 if >> trade_date_yearformat==`i' &FF_group_rank_0==`n' >> local s_BE=r(sum) >> local mean_EI_BE=`s_EI'/`s_BE' >> >> >> } >> } >> } >> >> I wanted to have the mean_EI_BE I calculated in the loops reported as a table >> >> something like the following: >> >> year group1 group2 group3 group4 group5 group6 >> >> 1990 x x x >> 1991 x x x >> 1992 x x x >> 1993 x x x >> .... >> >> >> >> How do I do this? Do I need to use matrix commends to save the >> mean_EI_BE I calculated each time or do I need to generate some >> variables before the loop and store the mean_EI_BE in those variables? * * 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: how to store the statistics calculated in a loop as a table?***From:*qing ye <yeqing1013@gmail.com>

**References**:**st: how to store the statistics calculated in a loop as a table?***From:*qing ye <yeqing1013@gmail.com>

**st: RE: how to store the statistics calculated in a loop as a table?***From:*Nick Cox <n.j.cox@durham.ac.uk>

**Re: st: RE: how to store the statistics calculated in a loop as a table?***From:*qing ye <yeqing1013@gmail.com>

**Re: st: RE: how to store the statistics calculated in a loop as a table?***From:*qing ye <yeqing1013@gmail.com>

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