I do not think there is any need to invoke R from within Stata to
calculate incomplete gamma functions. If you type, in Stata,
whelp density functions
then you will get the Stata online help for density and distribution
functions. This documents the function gammap(), which is Stata's
implementation of the incomplete gamma function. And if you type, in
Stata,
whelp functions
then you will get the on-line help for many other functions available
within Stata.
I hope this helps.
Roger
Roger B Newson
Lecturer in Medical Statistics
Respiratory Epidemiology and Public Health Group
National Heart and Lung Institute
Imperial College London
Royal Brompton campus
Room 33, Emmanuel Kaye Building
1B Manresa Road
London SW3 6LR
UNITED KINGDOM
Tel: +44 (0)20 7352 8121 ext 3381
Fax: +44 (0)20 7351 8322
Email: [email protected]
Web page: www.imperial.ac.uk/nhli/r.newson/
Departmental Web page:
http://www1.imperial.ac.uk/medicine/about/divisions/nhli/respiration/pop
genetics/reph/
Opinions expressed are those of the author, not of the institution.
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Vladimir
Vakhitov
Sent: 07 March 2008 17:57
To: [email protected]
Subject: Re: st: Gamma functions in R and Stata's Gamma Functions
I found a Stata program that can execute R code from within Stata.
Try -findit rsource-.
Vladimir
2008/3/7, [email protected] <[email protected]>:
> Dear All,
>
> I am trying to implement a test that requires the incomplete gamma
function.
>
> The R code is given by
>
> example<- pgamma(Z, shape=X,rate=Y)
>
> where Z is the critical value for a chi^2 distribution. I am not very
> experienced with this distribution, and failed to find out the
> corresponding counterpart in Stata. Hence, would it be possivle to
you to
> provide me some tips to implement it in Stata?
>
> Thanks in advance for your time.
>
> Tiago
>
>
>
> *
> * 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/
>
--
__________________
Volodymyr Vakhitov
[email protected]
*
* 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/
*
* 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/
