search for: filter_data

...et is 2GB in CSV. Is there a way I can read my csv, select a few columns, and write it to an output file in real time? This is what I do right now to a small test file: data <- read.csv('data.csv', header = FALSE) data_filter <- data[c(1,3,4)] write.table(data_filter, file = "filter_data.csv", sep = ",", row.names = FALSE, col.names = FALSE) This test file writes the three columns to my desired output file. Can I do this while bypassing the storage of the entire array in memory? Thank you very much for the help. -- Jason [[alternative HTML version deleted]]