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Recently, I started using R Revolution, and I tried to run a example code to visualize a decision tree.

I ran the code:

data("kyphosis", package="rpart") 
kyphTree <- rxDTree(Kyphosis ~ Age + Start + Number, data = kyphosis, cp=0.01) 
library(RevoTreeView)
plot(createTreeView(kyphTree))

And got the error:

Error in tools:::httpdPort > 0L : 
  comparison (6) is possible only for atomic and list types

I searched about this error, I'm using the R 3.2.2 and already updated my Rstudio.

Someone could help me?

Tks,

Gerson Kumagaia
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  • Where does the error occur? It is not clear from your question. It is highly unlikely that rstudio has anything to do with the problem. – lmo Apr 26 '16 at 13:35

1 Answers1

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Your problem is not related to RStudio. It appears to be a bug in the plot function for revoTreeView. The error shows that a comparison is being made with tools:::httpdPort (first few lines of the plot.revoTreeView function). This is a function, not a number. Please submit through your Microsoft support channels.

Derek McCrae Norton
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  • I got in touch with a Microsoft representative and it really is a bug in the package and it should be fixed in the next realease. Tks – Gerson Kumagaia May 02 '16 at 20:04