[R] Problems using rfImpute

From: Birgit Lemcke <birgit.lemcke_at_systbot.uzh.ch>
Date: Mon, 05 May 2008 15:04:29 +0200


Hello R-user!

I am running R 2.7.0 on a Power Book (Tiger). (I am still R and statistics beginner)

I tried rfImpute (randomForest) and as far as I understood should it replace NA`s using a proximity matrix:

> set.seed(100000)
> Subset5Imputed<-rfImpute(Sex~., data=Subset5)
ntree OOB 1 2
300: 11.78% 12.36% 11.21%
ntree OOB 1 2
300: 12.07% 12.64% 11.49%
ntree OOB 1 2
300: 11.49% 11.21% 11.78%
ntree OOB 1 2
300: 12.50% 12.93% 12.07%
ntree OOB 1 2
300: 12.07% 12.36% 11.78%
> str(Subset5Imputed)

'data.frame':	696 obs. of  24 variables:
$ Sex                        : Factor w/ 2 levels "0","1": 2 2 2 2 2  
2 2 2 2 2 ...
$ InfSpath_caducuous         : Factor w/ 3 levels "0","1","NA": 1 1 1  
1 1 1 1 1 1 1 ...
$ InfType_sparsely_paniculate: Factor w/ 3 levels "0","1","NA": 1 1 1 3 1 1 1 1 1 1 ...

But there are still NA`s in the data frame. Sorry if this reason is only ma stupididty and thanks for answering in advance.

B.

Birgit Lemcke
Institut für Systematische Botanik
Zollikerstrasse 107
CH-8008 Zürich
Switzerland
Ph: +41 (0)44 634 8351
birgit.lemcke_at_systbot.uzh.ch

175 Jahre UZH
«staunen.erleben.begreifen. Naturwissenschaft zum Anfassen.» MNF-Jubiläumsevent für gross und klein.
19. April 2008, 10.00 Uhr bis 02.00 Uhr
Campus Irchel, Winterthurerstrasse 190, 8057 Zürich Weitere Informationen http://www.175jahre.uzh.ch/naturwissenschaft



R-help_at_r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Mon 05 May 2008 - 13:15:47 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Mon 05 May 2008 - 14:30:34 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.

list of date sections of archive