Logistic Regression on a Windows Machine
On Sun, 24 Nov 2002, Carrie Beam wrote:
Hello everybody,
I am hoping you can help me. I just downloaded and installed the
"precompiled binary distribution" of R to my Windows machine (running
Windows Millennium). (I did not download or install anything else - no
packages).
I need to run a logistic regression and understand the function I need is
polr() or maybe SSlogis().
However, when I try to invoke either function, I get
Error: couldn't find function "polr"
Error: couldn't find function "SSlogis"
I have done some snooping on the website and think I may need the MASS
package for polr() and the NLS package for SSlogis().
My questions:
1. Are these indeed the functions I need to run a logistic regression?
Probably not. See ?glm if you mean a binomial logistic regression. nls/SSlogis will give you a least-squares logistic fit.
2. If so, are the packages with them available for a Windows machine?
Yes, just look at the results of library().
Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272860 (secr) Oxford OX1 3TG, UK Fax: +44 1865 272595 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._