I am trying to specify the colClasses options in the read.csv function in R. In my data, the first column "time" is basically a character vector while the rest of the columns are numeric.
data <- read.csv("test.csv", comment.char="" ,
In the above command, I would want R to read in the "time" column as "character" and the rest as numeric. Although the "data" variable did have the correct result after the command completed, R returned the following warnings. I am wondering how I could fix these warnings?
1: In read.table(file = file, header = header, sep = sep, quote = quote, :
not all columns named in 'colClasses' exist
2: In tmp[i[i > 0L]] <- colClasses :
number of items to replace is not a multiple of replacement length