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RE: st: Combining strings by group
From
Nick Cox <[email protected]>
To
"'[email protected]'" <[email protected]>
Subject
RE: st: Combining strings by group
Date
Wed, 16 Nov 2011 10:11:13 +0000
It's easier than that.
bysort code : replace type = type[_n-1] + "," + type if _n > 2
by code : replace type = type[_N]
Nick
[email protected]
daniel klein
try a combination of -reshape- and -egen-'s -concat()- function.
. bys code : g byte j = _n
. reshape wide type ,i(code) j(j)
. egen combinedtype = concat(type*) ,p(" ")
. replace combinedtype = subinstr(combinedtype, " ", ", ", .)
. drop j type* // clean up
Ben Hoen
Assume I had the following dataset with two variables:
code type
1 a
1 c
2 e
3 f
3 g
3 z
I want to create a third (string) variable that concatenates the string
"type" by code group, [...]
code combinedtype
1 "a, c"
2 "e"
3 "f, g, z"
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