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2010 Oct 22
2
How long does skipping in read.table take
...figure it out empirically - but maybe based on your experience you can tell me if it's doable in a reasonable amount of time: I have a table (in .txt) with a 17,000,000 rows (and 30 columns). I can't read it all in (there are many strings). So I thought I could read it in in parts (e.g., 1 milllion) using nrows= and skip. I was able to read in the first 1,000,000 rows no problem in 45 sec. But then I tried to skip 16,999,999 rows and then read in things. Then R crashed. Should I try again - or is it too many rows to skip for R? Thank you! -- Dimitri Liakhovitski Ninah Consulting www.ninah...