Levels in R Dataframe

Question

I imported data from a .csv file, and attached the dataset.
My problem: one variable is in integer form and has 295 levels. I need to use this variable to create others

Answer 1

Do summary(data) to check things got read in properly. If columns aren't numeric that should be, look at the colClasses argument to read.csv to force it, which will probably also result in NA values for poorly-formed numbers.

help(read.csv) will help.