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Re: st: table command returns different values every time


From   Rijo John <rmjohn@gmail.com>
To   stata <statalist@hsphsun2.harvard.edu>
Subject   Re: st: table command returns different values every time
Date   Thu, 12 Dec 2013 11:47:36 +0530

I realized that it is not the code itself that is causing the problem,
but something that is happening before. Because, when I ran this code
independently on the data with only the variables used in the code,
the results are same all the time. I need to figure out what else is
going on before this particular code. I will update if I find the
answer.

Thank you for your time.


Regards,
Rijo.

On Thu, Dec 12, 2013 at 11:14 AM, Richard Williams
<richardwilliams.ndu@gmail.com> wrote:
> I am with Nick -- I do not see any reason why you should be having problems.
> My theory is that there is something going on in the earlier code we aren't
> seeing. Are you, for example, generating a random variable, or drawing a
> random subsample? If so, you might need to set the seed first, e.g. start
> your code off with
>
> set seed 123456
>
>
> At 11:07 AM 12/11/2013, Nick Cox wrote:
>>
>> There are at least two problems in understanding this.
>>
>> First, and obviously, we don't have your data to check this (and you
>> don't provide an alternative reproducible example).
>>
>> Second, and more of a challenge, you are calling up  -table- to show
>> some means in cells of a cross-classification. I may be missing
>> something, but there should be no way that depends on the sort order
>> of your data. Also, as you imply, that should be reproducible any way.
>>
>> Any chance of seeing an example we can reproduce?
>> Nick
>> njcoxstata@gmail.com
>>
>>
>> On 11 December 2013 14:36, Rijo John <rmjohn@gmail.com> wrote:
>> > Dear Statalist,
>> >
>> > I am running the following code to generate a certain table. Every
>> > time restart stata and run the code it returns results wherein some of
>> > the values are slightly different compared to the previous run. I am
>> > talking about differences at 2nd, 3rd or higher decimals. What can I
>> > do to make this stable? I think the difference is happening may be
>> > because the sorting order is changing every time I restart stata. It
>> > doesn't change within the same session. If I don't give the sort
>> > command in between it still changes every time I run the program.
>> >
>> > <---Code Begins --->
>> > local fruit "Apple Apricot Bananas Mango Orange"
>> > local num "1 2 3 4 5"
>> > local n : word count `fruit'
>> > forvalues i=1/`n'{
>> >      sort id, stable
>> >      local a : word `i' of `fruit'
>> >      local b : word `i' of `num'
>> >      gen `a'=0
>> >      replace `a'=var1 if fruit==`b'
>> >      table State sex if ag==2 [pw=mult], c(mean `a')
>> > }
>> > <---Code Ends --->
>> > *
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>
> -------------------------------------------
> Richard Williams, Notre Dame Dept of Sociology
> OFFICE: (574)631-6668, (574)631-6463
> HOME:   (574)289-5227
> EMAIL:  Richard.A.Williams.5@ND.Edu
> WWW:    http://www.nd.edu/~rwilliam
>
>
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