Re: st: generate variable versus define scalar, with conditional statement

[annoporci <annoporci@gmail.com>]

> See the review

Fantastic reference, thanks Nick.

I have read many of your Stata tips and Stata articles, which are very  
helpful, but hadn't read this particular one.

Thanks a lot,

Patrick.

---
Patrick Toche.


On Tue, 15 Jan 2013 21:59:09 +0800, Nick Cox <njcoxstata@gmail.com> wrote:

> See the review in excruciating detail in
>
> @article \{dm0055,
> 	author = "Cox, N. J.",
> 	title = "Speaking Stata: Compared with ...",
> 	journal = "Stata Journal",
> 	publisher = "Stata Press",
> 	address = "College Station, TX",
> 	volume = "11",
> 	number = "2",
> 	year = "2011",
> 	pages = "305-314(10)",
> 	url = "http://www.stata-journal.com/article.html?article=dm0055";
> }
>
> Abstract.  Many problems in data management center on relating values
> to values in other observations, either within a dataset as a whole or
> within groups such as panels. This column reviews some basic Stata
> techniques helpful for such tasks, including the use of subscripts,
> summarize, by:, sum(), cond(), and egen. Several techniques exploit
> the fact that logical expressions yield 1 when true and 0 when false.
> Dividing by zero to yield missings is revealed as a surprisingly
> valuable device.
>
> http://www.stata-journal.com/article.html?article=dm0055
>
> On Tue, Jan 15, 2013 at 1:52 PM, annoporci <annoporci@gmail.com> wrote:
> > > I doubt that you need to loop, but I am completely in the dark over
> > > what it is that you want to do.
> > >
> > > Nick
> >
> >
> >
> > I'm generating indices starting at different dates, so I want to use the
> > value of the variable at some date of my choosing (not the first
> > date in the dataset!) to generate an index starting at, say, the value  
> > 1,
> > by dividing all observations by that value. Very simple. Probably  
> > one-line
> > of code or less.
> >
> > ;-)
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--
Patrick Toche.
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