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From |
Johannes Geyer <JGeyer@diw.de> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: use of count. |

Date |
Thu, 18 Sep 2008 11:02:24 +0200 |

You could try the following: bysort year state cnum: gen x = _n == 1 by year state : replace x = sum(x) by year state : replace x = x[_N] a solution that is described here: http://www.stata.com/support/faqs/data/distinct.html Johannes owner-statalist@hsphsun2.harvard.edu schrieb am 18/09/2008 10:45:37: > Let me ask my question again. > > I have the variables year state cnum candidat. > > Year state and candidate have the usual meaning. > > cnum is the consituency within a state. > > So in one year I may have 5 states and within that I may have 10 > constituencies and within those I may have say 4 candidates each. > > I want to compute the number of constituencies in each state. > > I try to do this by : - > > gen noofct=0 > > bysort year state cnum : count and now I want to store r(N) in noofct > variable. So the noofct variable will have the same value in any one > consituency. This is what I am not able to do. > > Can someone tell me how to do this ? > > Thank you, > Ashim. > > > > > > > On Thu, Sep 18, 2008 at 1:18 PM, Johannes Geyer <JGeyer@diw.de> wrote: > > To me it is not clear what you try to achieve. It is easier to help if you > > explain what variables you have and what you are trying to do using Stata, > > in particular describe an error if it occurs. > > > > I assume you want to count the number of candidates in each state but I > > have no idea what "cnum" and "cname" mean and what "count" is. Is "count" > > a variable? Note that the syntax of the command count is different. And > > remember that "(" ")" parentheses in a by-statement have an important > > meaning: "The varlist1 (varlist2) syntax ... verifies that the data are > > sorted by varlist1 varlist2 and then performs a by as if only varlist1 > > were specified." > > > > Johannes > > > > owner-statalist@hsphsun2.harvard.edu schrieb am 18/09/2008 09:34:21: > > > >> Hello everyone, > >> > >> I have a question : > >> > >> I want to do : > >> > >> bysort state cnum cname : replace no_of_cand_in_state=count > >> > >> This does not work. could someone please tell me how do I fix this ? > >> > >> Thank you, > >> Ashim. > >> * > >> * 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: use of count.***From:*"Nick Cox" <n.j.cox@durham.ac.uk>

**References**:**Re: st: use of count.***From:*"Ashim Kapoor" <ashimkapoor@gmail.com>

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