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Re: st: Extract identifier in the middle of a string variable
From
Nick Cox <[email protected]>
To
[email protected]
Subject
Re: st: Extract identifier in the middle of a string variable
Date
Fri, 14 Dec 2012 13:19:56 +0000
I tried various solutions with -moss- (SSC) but kept messing up the
regular expression. Robert Picard is more fluent than I with regexp.
Here is a more simple-minded approach:
clear
input str80 myid
"BASE:C; BAYB:C; BMV:C *; BST:TRVC; BVL:C; DB:TRVC; NYSE:C.PRH;"
"NYSE:C; NYSE:C.PRI; SOMA:CTGP11B; TSE:8710; XTRA:TRV"
end
gen wc = wordcount(myid)
gen nyse = ""
su wc, meanonly
qui forval i = 1/`r(max)' {
replace nyse = nyse + substr(word(myid, `i'), 6, .) + " " if
substr(word(myid, `i'), 1, 4) == "NYSE"
}
replace nyse = trim(subinstr(nyse, ";", "", .))
split nyse
local nsplit : word count `r(varlist)'
gen shortest = nyse1
qui forval i = 2/`nsplit' {
replace shortest = nyse`i' if length(nyse`i') < length(shortest) &
length(nyse`i')
}
On Fri, Dec 14, 2012 at 12:46 PM, Ghislaine Vantomme
<[email protected]> wrote:
> BASE:C; BAYB:C; BMV:C *; BST:TRVC; BVL:C; DB:TRVC; NYSE:C.PRH;
> NYSE:C; NYSE:C.PRI; SOMA:CTGP11B; TSE:8710; XTRA:TRV
>
>
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