I have been trying to understand how the argument 'nmax' works in 'factor' function. R-Documentation states - "Since factors typically have quite a small number of levels, for large vectors x it is helpful to supply nmax as an upper bound on the number of unique values."
In the code below what is the reason for error when value of nmax is 24. Why did the same error not occur with nmax = 25 and also how come there are 26 levels when nmax = 25 ? > factor(x = letters, nmax = 26) [1] a b c d e f g h i j k l m n o p q r s t u v w x y z Levels: a b c d e f g h i j k l m n o p q r s t u v w x y z > factor(x = letters, nmax = 25) [1] a b c d e f g h i j k l m n o p q r s t u v w x y z Levels: a b c d e f g h i j k l m n o p q r s t u v w x y z > factor(x = letters, nmax = 24) Error in unique.default(x, nmax = nmax) : hash table is full ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
