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

[Katia Bobulova <katia.bobulova@googlemail.com>]

No unfortunately it is not what I want.

I am just trying to have a table showing how many times a dummy is
released contemporaneously to each other dummy for each interval time
through my sample.

Thank you very much anyway.

Katia


2011/8/4 MacLennan, Graeme <g.maclennan@abdn.ac.uk>:
> If you have only four dummies then:
>
> *** example begin***
> gen d1d2d3d4 =  D1*1000 + D2*100 + D3*10 + D4
> tab d1d2d3d4
> *** example end***
>
> Might do what you want?
> Graeme
>
> ********
> 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?
>>
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