Re: [R] Efficiently reading random lines form a large file

On Tue, 2007-05-15 at 16:02 -0700, Juan Pablo Lewinger wrote: > I need to read two different random lines at a time from a large > ASCII file (120 x 296976) containing space delimited 0-1 entries. > > The following code does the job and it's reasonable fast for my needs: > >lineNumber = samp

[R] Efficiently reading random lines form a large file

I need to read two different random lines at a time from a large ASCII file (120 x 296976) containing space delimited 0-1 entries. The following code does the job and it's reasonable fast for my needs: lineNumber = sample(120, 2) line1 = scan(filename, what = "integer", skip=lineNumber[1]-