I am running the ctree function in R.
My data has about 10 variables, many of which are categorical. 2 of the categorical variables have many levels (one has 900 levels, another has 1,000 levels). As an example, 1 of these variables is disease code and is structured as A, B, C, ...., AA, AB, AC.... Each time i've tried to run the ctree function, including these 2 variables in the data, the function never stops running. When i remove these 2 variables from the data and run without them, the function returns in about 3 seconds. Q: Is there a limit to the amount of levels that a categorical variable can contain? Is there something else that i may be overlooking? THanks. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
