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st: AW: finding date occurrences within a specified range, searching in multiple variables


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: AW: finding date occurrences within a specified range, searching in multiple variables
Date   Fri, 9 Oct 2009 18:05:53 +0200

<> 

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 

*************



HTH
Martin


-----Ursprüngliche Nachricht-----
Von: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Michael
McCulloch
Gesendet: Freitag, 9. Oktober 2009 18:00
An: Statalist Statalist
Betreff: st: finding date occurrences within a specified range, searching in
multiple variables 

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))




Michael McCulloch, LAc MPH PhD
Pine Street Foundation
124 Pine Street
San Anselmo, CA 94960-2674
tel:	415-407-1357
fax: 	206-338-2391
mm@pinestreetfoundation.org





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