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Re: st: Table to count how many times an event occurs with another
From
Eric Booth <[email protected]>
To
"<[email protected]>" <[email protected]>
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
[email protected]
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 <[email protected]>:
>> 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
>> [email protected]
>>
>> On Thu, Aug 4, 2011 at 10:08 AM, Katia Bobulova
>> <[email protected]> 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 <[email protected]>:
>>>> Why not -tabulate-?
>>>>
>>>> Nick
>>>>
>>>> On 4 Aug 2011, at 10:52, Katia Bobulova <[email protected]>
>>>> 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/