Statalist


[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

RE: st: ISO 8601 date-time format in Stata 10


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: ISO 8601 date-time format in Stata 10
Date   Wed, 22 Aug 2007 18:54:21 +0100

The original problem has already been solved, 
but I want to comment on one detail. 

Bob recommends that you install -catenate-. 

I recommend that you don't do that. 

The explanation is provided by the package description: 

"-catenate- generates a new string variable by concatenating
varlist. The variables in varlist may be string or numeric. Note
added 2004: this package was written for Stata 5 and is now
superseded by -egen, concat()- in up-to-date Statas." 

As -egen, concat()- is part of official Stata you need
do nothing, assuming that you have Stata 7 or up. 

You might well ask: why does -catenate- still sit
on SSC if it has been superseded? In essence, SSC 
functions as an archive, and -catenate- remains accessible
to those using old Statas, or (more importantly in 
this case) to those who may be using old Stata do 
files or programs that may use -catenate-. If such 
a do file or program should fail, a query could be 
resolved by pointing to -catenate-. Hence, the 
existence of -catenate- might do some good, and 
should do no harm.  

Nick 
n.j.cox@durham.ac.uk 

Robert A Yaffee
 
> Dear Joe,
>    You can use the substr  function to extract the date and 
> time into separate string variables.
> Use ssc install catenate
> then you can construct a new datetime variable  such as  mydt 
> = catenate datestr + timestr)
>    Then use transform this into a Stata date time function 
> with    gen double statadt = clock(mydt, "YMD hms")
> Then format this with the new   format statdt %tc

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index