Hi,
I am sorry for the repost.
Since I did not get any response, I am thinking whether I could get help on the
following part of the problem related to capture.output.
Dim cmdString As String cmdString = "predict(gdis, train[,-1], type = 'prob')"
Call Rinterface.RRun("myOutput<-capture.output(print(try({" & cmdString & "},
silent=TRUE)))") (Geting the following output[1] "Error in predict.rpart(f,
newdata = dat, type = \"prob\") : \n\tobject \"train\" not
found\n"attr(,"class")[1] "try-error" )
I can see the values of "train[,-1]" from the R prompt. But capture.output is
complaining that "object 'train' is not found". I am not able to understand
where things are going wrong.
Thanking you,
Regards
Sakib
From: [EMAIL PROTECTED]: [EMAIL PROTECTED]: "#RError while using getarray"Date:
Thu, 13 Sep 2007 05:28:48 +0000
Hello, I shall appreciate any help on the problem as mentioned below. I am
using Ada package, which has a predict function that works like predict.rpart.
When I run a piece of code (e.g. pred <- predict(gdis, train[,-1], type =
"prob") ) in R, and type "pred" at the R prompt, I get the probability table
such as the one given below [,1] [,2][1,] 0.2011456
0.7988544[2,] 0.2011456 0.7988544[3,] 0.2011456 0.7988544[4,] 0.2011456
0.7988544[5,] 0.2011456 0.7988544However, when I try to do the same thing (code
given below) from Excel through Rinterface, I am getting "#Rerror". Call
Rinterface.RRun("pred <- predict(gdis, train[,-1], type = 'prob')")Call
RInterface.GetArray("pred", Range("C20", "C24")) I went through the mailing
list archive and tried the following alternatives: 1. Call
Rinterface.GetArray("pred[,1]", Range("C20", "C24"))(Results in #Rerror) 2.
Dim cmdString As String cmdString = "predict(gdis, train[,-1], type = 'prob')"
Call Rinterface.RRun("myOutput<-capture.output(print(try({" & cmdString & "},
silent=TRUE)))") (Geting the following output[1] "Error in predict.rpart(f,
newdata = dat, type = \"prob\") : \n\tobject \"train\" not
found\n"attr(,"class")[1] "try-error" ) 3. Call
Rinterface.GetArray("as.matrix(pred)", Range("C20", "C24"))(Results in
#Rerror)The Ada manual says that the return value of the predict is a matrix of
probability values. I tried even the following, which too resulted in "#Rerror"
4. Call Rinterface.GetArray("pred[1,1]", Range("C20", "C24")) Looking forward
to any useful hint, Sincerely,Sakib
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