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RE: st: gen a variable
From
Nick Cox <[email protected]>
To
"'[email protected]'" <[email protected]>
Subject
RE: st: gen a variable
Date
Thu, 22 Mar 2012 16:05:53 +0000
I agree with the spirit here but note that
a == 1 & b == 1 & c == 1
is not translated by
inlist(1, a, b, c)
The latter is: is _any_ of a, b, c equal to 1? Not: are _all_ of a, b, c equal to 1?
This is easier to see with numerical examples, say
. di inlist(1,1,2,2)
1
Nick
[email protected]
daniel klein
Chiara,
Nick and Maarten already pointed to -egen- as a possible solution.
Aside from your question I would like to add, that expressions like
if cond3==1 & age>=15 & age<=64 & dipind==1 & hours>20 & hours<55 &
occupation==1
may in a lot of cases be easier written using -inlist() and
-inrange()- function as in
if inlist(1, cond3, dipind, occupation) & inrange(age, 15, 64) &
inrange(hours, 20, 55)
Note however that -inrange(z, a, b)- returns one if a <= z <= b.
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