--- Mingfeng Lin <[email protected]> wrote:
> Is there a way to create new rows and then fill in weekend dates
> automatically in Stata? For instance, I have a series of stock
> prices, and Jan01-Jan05 are Monday-Friday, and weekend dates are not
> available.
>
> What I want to do is to "insert rows", say Jan06 and Jan07, such that
> they take on the value of Jan05. The only way I can think of is to
> create this series of dates in Excel, then import to Stata and merge
> it, and then use [_n-1] to replace the missing values. But is there
> a more straightforward way? I have a bunch of these files with
> different date ranges and it's really inefficient.
*------------- begin example ----------------
tempfile a b
sysuse sp500, clear
sort date
save `a'
sum date, meanonly
local min = r(min)
local days = r(max) - r(min) + 1
drop _all
set obs `days'
gen date = _n + `min' - 1
sort date
save `b'
merge date using `a'
format date %td
*-------------- end example ---------------
(For more on how to use examples I sent to the Statalist, see
http://home.fsw.vu.nl/m.buis/stata/exampleFAQ.html )
Hope this helps,
Maarten
-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
__________________________________________________________
Sent from Yahoo! Mail.
A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html
*
* 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/
