Reorder factor and address embedded escapes
Does the following help?
A = c("A\\nB", "C\\nD")
test <-data.frame(A)
#access levels directly to change names
levels(test$A) <- sub("\\\\n", "\n", levels(test$A))
#re-order levels of the factor
test$A <- relevel(test$A, "C\nD")
Rob James wrote:
I am trying to reorder a factor variable that has embedded escape
characters. The data begins as a csv file with a factor that includes
embedded new line characters. By the time read.table has rendered it
into a data frame, the variable now has an extra backslash.
e.g.
"This\nLabel" in the csv becomes "This\\nLabel" in the data frame.
So, I am trying to reorder the factor and deal with the introduction of
a secondary \ . Here's a small example:
A = c("A\\nB", "C\\nD")
test <-data.frame(A)
str(test)
test$reorderA <-factor(test$A, c("C\\nD", "A\\nB"))
str(test)
test$reorderB <-sub("\\\\n", "\n", test$reorderA)
str(test)
When sub is applied to the now-correctly ordered factor, it returns to
the default ordering.
Suggestions?
______________________________________________ R-help at 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.