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From |
Austin Nichols <austinnichols@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Calculate individual distance from other group members |

Date |
Tue, 23 Feb 2010 18:24:17 -0500 |

Kartika Sari <kartika.sj@gmail.com>: Like so, then? clear all input gid id ward d1 d2 d3 d4 d5 1 1 3 10 4 0 9 7 1 2 1 0 6 10 8 5 1 3 2 6 0 4 11 3 1 4 1 0 6 10 8 5 1 5 2 6 0 4 11 3 2 1 3 10 4 0 9 7 2 2 1 0 6 10 8 5 2 3 2 6 0 4 11 3 end qui forv i=1/7 { g i`i'=. } bys gid (id): assert id[1]==1 bys gid (id): assert id==id[_n-1]+1 if _n>1 qui forv i=1/7 { bys gid (id): replace i`i'=d`=ward[`i']' if ward[`i']<. } l, noo See also http://www.stata.com/support/faqs/data/members.html (though it has some weird editing-induced typos e.g. "We have seen that for some problems there is an advantage in using integer identifiers which run from 1 and above within each group. If such identifiers do not exist, they can be created, as seen in section 5.") On Tue, Feb 23, 2010 at 4:28 PM, Kartika Sari <kartika.sj@gmail.com> wrote: > Yes, the assert stop the calculation. > I tried not to use assert to see what will happen, and try several > combination, but off course, it didn't work. > > so the variables I have: > > for each individual: GroupID MemberID (1 to 7) WardID (1 to 74) Ward_1 > Ward_2 etc Ward_74 that shows distance from ward where the person live to > other 73 wards (0 for the ward he live in). > > But, sometimes member of group are only 2 or 3. > > Any suggestions? > > thanks in advanced > Kartika > > 2010/2/23 Martin Weiss <martin.weiss1@gmx.de> > >> >> <> >> >> " and for the Group, it is not uniform at 5, it is from 1 to >> 7." >> >> >> Are the ids within the wards contiguous, i.e. 1,2,3,4? If not, the -assert- >> line in Austin`s code will stop Stata. >> >> >> >> >> >> HTH >> Martin >> >> >> -----Original Message----- >> From: owner-statalist@hsphsun2.harvard.edu >> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Kartika Sari >> Sent: Dienstag, 23. Februar 2010 21:46 >> To: statalist@hsphsun2.harvard.edu >> Subject: Re: st: Calculate individual distance from other group members >> >> Austin, >> Thanks for your reply. Yes, i would like to have something like that. >> >> But, its turn out the actual data is more complicated than the hypothetical >> I made before. >> I have 74 wards. and for the Group, it is not uniform at 5, it is from 1 to >> 7. >> >> So? >> >> Best regards, >> Kartika >> >> >> 2010/2/23 Austin Nichols <austinnichols@gmail.com> >> >> > Kartika Sari <kartika.sj@gmail.com>: >> > Like so? >> > >> > clear all >> > input gid id ward d1 d2 d3 d4 d5 >> > 1 1 3 10 4 0 9 7 >> > 1 2 1 0 6 10 8 5 >> > 1 3 2 6 0 4 11 3 >> > 1 4 1 0 6 10 8 5 >> > 1 5 2 6 0 4 11 3 >> > end >> > forv i=1/5 { >> > bys gid (id): assert id[`i']==`i' >> > bys gid (id): g i`i'=d`=ward[`i']' >> > } >> > l, noo >> > >> > On Tue, Feb 23, 2010 at 11:22 AM, Kartika Sari <kartika.sj@gmail.com> >> > wrote: >> > > Dear All, >> > > >> > > In my data, I have a distance matrix of wards for each individual. I >> > also >> > > know in which ward they live. The problem is i want to calculate ward >> > > distance from each individual to each of other members in a group. Say >> > there >> > > are 5 people in a group, so I need to calculate distance for 4 others >> for >> > > each person. I am wondering whether there is any syntax for this. >> > > >> > > The structure of data is something like this: >> > > >> > > group_id individual_id ward dtoward1 dtoward2 dtoward3 dtoward4 >> dtoward5 >> > > distance1? distance2? distance3? distance4? >> > > 1 1 3 10 4 0 9 7 >> > > 1 2 1 0 6 10 8 5 >> > > 1 3 2 6 0 4 11 3 >> > > 1 4 1 0 6 10 8 5 >> > > 1 5 2 6 0 4 11 3 >> > > >> > > Thank you very much in advanced. >> > > >> > > Best regards, >> > > Kartika >> > > * * 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: Calculate individual distance from other group members***From:*Kartika Sari <kartika.sj@gmail.com>

**Re: st: Calculate individual distance from other group members***From:*Austin Nichols <austinnichols@gmail.com>

**Re: st: Calculate individual distance from other group members***From:*Kartika Sari <kartika.sj@gmail.com>

**Re: st: Calculate individual distance from other group members***From:*Kartika Sari <kartika.sj@gmail.com>

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