One way would be to use the string function -regexm-
For example:
. clear
. input str12 x
x
1. "x1,x2,x3"
2. "x1,x3"
3. "x2"
4. "x1,x3,x4,x5"
5. "x5,x6"
6. end
. gen y = regexm(x, "x3")
. l
+-----------------+
| x y |
|-----------------|
1. | x1,x2,x3 1 |
2. | x1,x3 1 |
3. | x2 0 |
4. | x1,x3,x4,x5 1 |
5. | x5,x6 0 |
+-----------------+
Scott
> -----Original Message-----
> From: [email protected] [mailto:owner-
> [email protected]] On Behalf Of Mingfeng Lin
> Sent: Sunday, July 30, 2006 8:12 PM
> To: [email protected]
> Subject: st: Handling string data
>
> Greetings!
>
> I have tried to solve this myself with the reference, but no luck so
> far. My problem is to run a function on a string variable. This is
> the data that I have
>
> Variable X:
>
> x1,x2,x3
> x1,x3
> x2
> x1,x3,x4,x5
> x5,x6
>
>
> I was tring to generate a dummy variable y=1 when x3 is contained in X
> and 0 otherwise. Is there a command to do this?
>
> Thanks!
>
> Mingfeng
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