Message-ID: <4765B435.4030000@statistik.uni-dortmund.de>
Date: 2007-12-16T23:26:45Z
From: Uwe Ligges
Subject: paste dependent variable in formula (rpart)?
In-Reply-To: <476579AA.2020604@web.de>
Christian Schulz wrote:
> Hello,
>
> i'm trying to replace different target variables in rpart with a
> function. The data.frame getting always the target variable as last column.
> Try below, i get the target variable in the explained variables, too!?
> Have anybody an advice to avoid this.
>
> rp1 <- rpart(eval(parse(text=paste(names(train[length(train)])))) ~ . ,
I guess you want something along the following example:
train <- iris
form <- as.formula(paste(names(train)[length(train)], "~ ."))
rpart(form, data = iris)
or some data.frame method for rpart....
Uwe Ligges
> data=train,cp=0.0001)
>
> regards & many thanks
> Christian
>
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