Re: Re: st: Creating a new variable with information from other observations

[n j cox <n.j.cox@durham.ac.uk>]

.
Your question is an FAQ:

FAQ     . . . . . . . . . . Making foreach go through all values of a 
variable

        4/03    Is there a way to tell Stata to try all values of a
                particular variable in a foreach statement without
                specifying them?
                http://www.stata.com/support/faqs/data/foreach.html

Note that -search foreach- would have pointed you to this FAQ.

Nick
n.j.cox@durham.ac.uk

Davide Cantoni

Wonderful, that is just what I was looking for. Thank you, Maarten and Even.

Even Bergseng

> Can -levelsof- help you?

Davide Cantoni

>>:: is there a way to run a "foreach" over all (numeric) values that a
>>given variable takes, without having to specify exactly the values
>>that this variable takes? Ok, I see, in most cases this would be a job
>>for "by(sort)", but I cannot help thinking that there are some cases
>>in which bysort does not help me -- for example when I want to run
>>more than one command, as I would do within the braces of
>>"foreach...", or when the units the loop runs over (the `X' in
>>"foreach X", so to speak) are used in some logical condition.
>>
>>In brief: is there a way to create a numlist from the unique values
>>that a variable takes? Or how would you proceed?

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