Internal helper function.
colConvert(data, columns = "Height|Size|Data.Point", ignore.case = TRUE,
fixed = FALSE, debug = FALSE)
data.frame.
character string containing a regular expression (or character string for fixed = TRUE) to be matched in the given character vector (separate multiple column names by | in reg.exp).
logical TRUE to ignore case in matching.
logical TRUE if columns is a string to be matched as is.
logical indicating printing debug information.
data.frame.
Takes a data frame as input and return it after converting known numeric columns to numeric.