Sorry for no code - but it's a more of a general question.
I have read in a data frame ("|"-delimited, .txt).
daily<-read.table(file="filename.txt",sep="|",header=T)One of the variables is a factor with 110 levels: >str(daily$dma_id) Factor w/ 110 levels "500","501","503",... 108 levels of this factor happen to be numbers "500", "501", "503", ... "880","881" But the last 2 levels are strings: >levels(daily$dma_id)[109:110] [1] "OH1054" "PA2207" I checked in the raw data file (.txt) that there are no spaces in these last 2 levels, that there is nothing weird. There is nothing. When I do the following with any level of that factor, I get the data I am expecting: >daily$dma_id[daily$dma_id %in% levels(daily$dma_id)[108]] [1] "881" "881" "881" - etc. But when I do the same for the last two levels, I get nothing, for example: >daily$dma_id[daily$dma_id %in% "OH1054"] # - or: >daily$dma_id[daily$dma_id %in% levels(daily$dma_id)[109]] factor(0) As a result I can't rename those levels. It's not a real problem - I can do replace in the raw txt file. But still, why is it happening? Thank you! -- Dimitri Liakhovitski Ninah Consulting www.ninah.com ______________________________________________ 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.
