[datatable-help] fread on gzipped files

Nathaniel Graham npgraham1 at gmail.com
Tue Apr 2 20:30:32 CEST 2013


I have a moderately large csv file that's gzipped, but not in a tar
archive, so it's "filename.csv.gz" that I want to read into a data.table.
I'd like to use fread(), but I can't seem to make it work.  I'm currently
using the following:

data.table(read.csv(gzfile("filename.csv.gz","r")))

Various combinations of gzfile, gzcon, file, readLines, and
textConnection all produce an error (invalid input).  Is there a better
way to read in large, compressed files?
-------
Nathaniel Graham
npgraham1 at gmail.com
npgraham1 at uky.edu
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