Thank you James that you saved me from a huge mistake using NA as level.
I specified now
na.strings="NA"
$ Sex : Factor w/ 2 levels
"0","1": 2 2 2 2 2 2 2 2 2 2 ...
$ outLatTep_like_other : Factor w/ 2 levels
"0","1": 2 2 2 2 2 2 2 1 2 2 ...
$ outLatTep_like_conduplicate : Factor w/ 2 levels
"0","1": 1 1 1 1 1 1 1 2 2 1 ...
Now it looks like that
FemMal85_SexImpute<-rfImpute(Sex~.,data=FemMal85_Sex)
ntree OOB 1 2
300: 11.93% 11.49% 12.36%
Fehler in randomForest.default(xf, y, ntree = ntree, ..., do.trace =
ntree, :
NA not permitted in predictors
What`s going wrong now?
Birgit
But apart from that I get now another error message using rfImpute
Am 05.05.2008 um 15:31 schrieb James Reilly:
The values NA and "NA" are different. The first is treated as
missing; the second is not. For example,
> table(factor(c(NA,"0","1","NA","NA")))
0 1 NA
1 1 2
I suspect you have "NA" where you want NA, and this is causing your
problem.
James
--
James Reilly
Department of Statistics, University of Auckland
Private Bag 92019, Auckland, New Zealand
On 6/5/08 1:04 AM, Birgit Lemcke wrote:
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
[EMAIL PROTECTED]
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
Birgit Lemcke
Institut für Systematische Botanik
Zollikerstrasse 107
CH-8008 Zürich
Switzerland
Ph: +41 (0)44 634 8351
[EMAIL PROTECTED]
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
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