On 14.03.2010 19:12, Amy Hessen wrote:
Hi Uwe,
Thanks for your reply.
I did not understand what you mean and I still receive the error message.
OK, so which version of R and which version of e1071 is this?
Do you have any objects in your workspace?
I do not get an error message, just a nonsense result as requested.
> Do you mean that something is wrong in computing FORMULA?
I want to use formula in Naïve instead of using the class label, could you
please tell me where is the wrong?
As I said, the left hand side must label the classes, you chose the
first variable in iris which is NOT a factor.
You need:
mymodel <- naiveBayes(Species ~ ., data = iris, cross = 3)
or if you want to compute ion the data before:
class_label<- names(iris)[5] # !!!
Best,
Uwe
Cheers,
Amy
Date: Sun, 14 Mar 2010 15:30:36 +0100
From: lig...@statistik.tu-dortmund.de
To: amy_4_5...@hotmail.com
CC: r-help@r-project.org
Subject: Re: [R] Error in object$tables[[v]] : subscript out of bounds
On 14.03.2010 11:55, Amy Hessen wrote:
Hi,
Could you please tell me how I correct the following error message?
“Error in object$tables[[v]] : subscript out of bounds”
This is the code:
library(e1071)
data(iris)
attach(iris)
class_label<- names(iris)[1]
This is not the name for the class variable of the wiris data from R.
myformula<- formula(paste(class_label,"~ ."))
Why do you construct this in a so complicated manner rather than typing
the formula directly?
mymodel<-naiveBayes(myformula, iris,cross=3)
naiveBayes sort of fails (well, it runs smoothly but the result won't
make sense) here since it expects a class variable.
predict(mymodel,iris) ##Error in object$tables[[v]] : subscript out of bounds
Works for me.
Please upgrade R, e1071 and run in a clean session to see that the code
above does not fail. Although it makes absolutely no sense.
Uwe Ligges
Cheers,
Amy
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