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Re: AW: AW: st: round () if


From   Shehzad Ali <sia500@york.ac.uk>
To   statalist@hsphsun2.harvard.edu
Subject   Re: AW: AW: st: round () if
Date   07 Feb 2009 21:43:06 +0000

Thanks again, Martin and Jeph. This works perfectly.

Shehzad

On Feb 6 2009, Martin Weiss wrote:


<>

You can nest those -cond()-s, see
http://www.stata-journal.com/sjpdf.html?articlenum=pr0016




HTH
Martin


-----Ursprüngliche Nachricht-----
Von: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Shehzad Ali
Gesendet: Freitag, 6. Februar 2009 17:16
An: statalist@hsphsun2.harvard.edu
Betreff: Re: AW: st: round () if

Thank you, Jeph and Martin. This was really helpful.

To add further, is it possible to add another condition to round off weeks
0 and <1.5 to become 1 instead of zero while keeping the previous
condition alive?

Regards,
Shehzad

On Feb 6 2009, Martin Weiss wrote:


<>
Good solution, and in one line. Careful with 1 and 2, though. Does Ali
really want them to become zero?

*************
clear*
set obs 30
gen weeks=_n
gen newweek=cond(abs(round(week,12)-week)<=2,round(week,12),week)
list
*************



HTH
Martin


-----Ursprüngliche Nachricht-----
Von: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Jeph Herrin
Gesendet: Freitag, 6. Februar 2009 16:56
An: statalist@hsphsun2.harvard.edu
Betreff: Re: st: round () if


Assuming your week is integers

 gen newweek=cond(abs(round(week,12)-week)<=2,round(week,12),week)

should do.

hth,
Jeph


Shehzad Ali wrote:
Hi listers,

I want to round a variable 'week' if it is within 2 weeks range of multiples of 12 week. So 10 weeks should become 12 weeks while 9 weeks should not change. Similarly 21 weeks would not change while 25 weeks will change to 24 weeks. Is there a way to do it in Stata using -round- or other command?

Thank you,
Shehzad
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