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st: Loop to replace values of a variable


From   emanuele mazzini <madsoenistata@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: Loop to replace values of a variable
Date   Wed, 18 Dec 2013 14:33:32 +0100

Dear all statalist users,

I would like to program a (relatively) simple loop to replace the
values of a variable I created, but I cannot  figure it out how to
write the syntax.

The structure of my data is very simple:
I have 300 observations and a variable, say x, that in the first cell
(i.e. for n=1) is equal to 0.1, while it is missing for all other 299
cells. Data look like:

n     x
1    0.1
2     .
3     .
4     .
.
.
.
.
.
299  .
300  .

I would like the loop to replace the missing values of my variable by
going from cell 2 to cell 300, and to have a replace that would be at
a 0.1 intervals, so as to obtain data that look like:

n     x
1    0.1
2    0.2
3    0.3
4    0.4
.
.
.
.
.
299  29.9
300  30

I can obviously do it by hand, but a loop would be naturally much more
efficient!
Does anyone know how to make it?

Thank you in advance.
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