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From |
Eric Booth <ebooth@ppri.tamu.edu> |

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

Subject |
Re: st: Table to count how many times an event occurs with another |

Date |
Thu, 4 Aug 2011 15:34:59 +0000 |

<> Try: *********** clear input str12(Date Time ) D1 D2 D3 D4 "01/01/2008" "8:00" 1 0 0 1 "01/01/2008" "9:00" 0 1 0 0 "01/01/2008" "10:00" 0 1 1 0 "01/01/2008" "9:00" 0 0 0 0 "01/01/2008" "10:00" 1 1 1 1 "01/01/2008" "9:00" 0 1 0 1 "01/01/2008" "10:00" 1 0 0 1 end **number of times each pair co-occurs: tuples D1-D4, display max(2) *tuples 5-10 are what you want: forval i = 5/`ntuples' { loc one: piece 1 2 of "`tuple`i''" loc two: piece 2 2 of "`tuple`i''" g myvar`i' = 1 if `one'==1 & `two'==1 lab var myvar`i' "`tuple`i''" } **count number of times in each Time interval: preserve collapse (count) myvar5-myvar10, by(Date Time) l Time my*, noobs restore *or you can use -egen count- ********** - Eric __ Eric A Booth Public Policy Research Institute Texas A&M University ebooth@ppri.tamu.edu On Aug 4, 2011, at 10:07 AM, Katia Bobulova wrote: > This is an example of my databse: > > Date Time D1 D2 D3 D4 > 01/01/2008 8:00 1 0 0 1 > 01/01/2008 9:00 0 0 0 0 > 01/01/2008 10:00 0 1 1 0 > ..... ....... . . . . > > For every day I have something similar to the above example with dummy > variables. > In the fist row (8:30) I have that two dummies happen at the same time > and also in the last row (10:00). > I want to construct a table, in which I have the number of times ( for > each interval throughout my whole sample) I have that events D1 and D4 > happen together and D2 and D3 happen together and so on for all > possible combinations. > > Thanks, > Katia > > > > > > 2011/8/4 Anders Alexandersson <andersalex@gmail.com>: >> Please provide the original example data of the 4 events and 10 >> observations from which you want to create the table. >> The reason I ask is that I do not understand your provided 4*4 table. >> >> Anders Alexandersson >> andersalex@gmail.com >> >> On Thu, Aug 4, 2011 at 10:08 AM, Katia Bobulova >> <katia.bobulova@googlemail.com> wrote: >>> Because it doesn't do what I want and anyway it is not possible to use >>> tabulate with more than two variables. >>> >>> Katia >>> >>> 2011/8/4 Nick Cox <njcoxstata@gmail.com>: >>>> Why not -tabulate-? >>>> >>>> Nick >>>> >>>> On 4 Aug 2011, at 10:52, Katia Bobulova <katia.bobulova@googlemail.com> >>>> wrote: >>>> >>>>> Dear All, >>>>> >>>>> I have many events in my dataset and I want to count how many times >>>>> one event happens with another one. >>>>> >>>>> Assuming fro example 4 events and ten observations, I would like to >>>>> have a table like this: >>>>> >>>>> x1 x2 x3 x4 >>>>> x1 10 2 1 3 >>>>> x2 1 10 0 0 >>>>> x3 0 3 10 1 >>>>> x4 2 5 0 10 >>>>> >>>>> Could you please help me? >> >> * >> * 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: Table to count how many times an event occurs with another***From:*Eric Booth <ebooth@ppri.tamu.edu>

**References**:**st: Table to count how many times an event occurs with another***From:*Katia Bobulova <katia.bobulova@googlemail.com>

**Re: st: Table to count how many times an event occurs with another***From:*Nick Cox <njcoxstata@gmail.com>

**Re: st: Table to count how many times an event occurs with another***From:*Katia Bobulova <katia.bobulova@googlemail.com>

**Re: st: Table to count how many times an event occurs with another***From:*Anders Alexandersson <andersalex@gmail.com>

**Re: st: Table to count how many times an event occurs with another***From:*Katia Bobulova <katia.bobulova@googlemail.com>

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