[R] How to import BIG csv files with separate map?

Hi all, I am having problems importing a VERY large dataset in R. I have looked into the package ff, and that seems to suit me, but also, from all the examples I have seen, it either requires a manual creation of the database, or it needs a read.table kind of step. Being a survey kind of data

Re: [R] How to import BIG csv files with separate map?

Either of the following can be done in one line of code: Using the nrows and skip arguments to read.table one can read in a subset of rows. Using the colClasses argument of read.table the class NULL will suppress reading in the corresponding column. read.csv.sql from the sqldf package will

Re: [R] How to import BIG csv files with separate map?

Hi, On Jul 14, 2009, at 1:53 PM, giusto wrote: Hi all, I am having problems importing a VERY large dataset in R. I have looked into the package ff, and that seems to suit me, but also, from all the examples I have seen, it either requires a manual creation of the database, or it needs