|
|  |
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]
Re: st: -generate- and run time contingencies
Nick Cox had a slightly shorter version, eliminating the creation of
the OK variable.
I am reminded again that it would be nice if the -replace- command
somehow left behind the number of changes it makes (which it
displays, but does not leave for a program to pick up.) It's been
discussed before on statalist I think, and making -replace- r-class
would likely break all kinds of programs, but still it would be handy
to be able to get to that somehow....
-Nick Winter
At 11:26 AM 1/30/2006, you wrote:
At 11:09 AM 1/30/2006, n j cox wrote:
// not tested
gen x = uniform()
gen byte OK = x >= 0.8
capture assert OK == 1
while _rc {
replace x = cond(x < 0.8, uniform(), x)
replace OK = x >= 0.8
capture assert OK == 1
}
I think you've got a winner. I tried it with a 1,000 cases and then
100,000, and it went pretty quickly. Then, I tried it with
10,000,000 cases - it took a few minutes but it finally got it done.
-------------------------------------------
Richard Williams, Notre Dame Dept of Sociology
OFFICE: (574)631-6668, (574)631-6463
FAX: (574)288-4373
HOME: (574)289-5227
EMAIL: [email protected]
WWW (personal): http://www.nd.edu/~rwilliam
WWW (department): http://www.nd.edu/~soc
*
* 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/
________________________________________________________
Nicholas J. G. Winter 607.255.8819 t
Assistant Professor 607.255.4530 f
Department of Government [email protected] e
Cornell University falcon.arts.cornell.edu/nw53 w
308 White Hall
Ithaca, NY 14853-4601
*
* 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/
