<>
" In addition, check out -tin()- and -twithin()- which can lead to simpler
code."
As implied by my pointer to -help time_series_functions-...
HTH
Martin
-----Ursprüngliche Nachricht-----
Von: [email protected]
[mailto:[email protected]] Im Auftrag von Nick Cox
Gesendet: Freitag, 9. Oktober 2009 18:37
An: [email protected]
Betreff: st: RE: AW: finding date occurrences within a specified range,
searching in multiple variables
If these are daily data, being later than 1 nov 2009 and earlier than 3
nov 2009 (which the code clearly implies) reduces to being equal to 2
nov 2009, so you just need a single equality.
In addition, check out -tin()- and -twithin()- which can lead to simpler
code.
Nick
[email protected]
Martin Weiss
You may also find -help time_series_functions- useful...
*************
clear
set obs 5
gen id = _n
gen date="11012009"
replace date="11022009" in 3
replace date="11032009" in 4
list date
generate t_date = date(date, "MDY")
generate t_anotherdate=t_date+2
format t_* %td
qui ds t_*
foreach var of varlist `r(varlist)'{
gen byte seek`var' = `var' > td(1nov2009) & t_date <
td(3nov2009)
}
list, noobs
*************
Michael McCulloch
I'm looking for events that all occurred within a specified date
range, searching in multiple date fields. I've created the following
example to show that I want to find all records where t_date is
between 1nov2009 and 3nov2009.
This works fine, but is there a way to create a loop that would do
this search within multiple date fields, all of which have field name
beginning with "t_"?
clear
set obs 5
gen id = _n
gen date="11012009"
replace date="11022009" in 3
replace date="11032009" in 4
list date
generate t_date = date(date, "MDY")
format t_date %td
gen seek = cond((t_date > td(1nov2009) & t_date < td(3nov2009)), 1, 0)
sort seek
list id t_date seek if seek==1
list id t_date if (t_date > d(1nov2009) & t_date < d(3nov2009))
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