*..plus I get the following message after reading the whole set (all 7 columns):*
> read.csv.ffdf(file=csvfile, header=FALSE, skip=100, first.rows=1000, > next.rows=1e7, VERBOSE=TRUE) read.table.ffdf 1..1000 (1000) csv-read=0.02sec ffdf-write=0.08sec read.table.ffdf 1001..10001000 (10000000) csv-read=282.16sec ffdf-write=65.01sec read.table.ffdf 10001001..20001000 (10000000) csv-read=240.3sec ffdf-write=63.84sec read.table.ffdf 20001001..30001000 (10000000) csv-read=213.78sec ffdf-write=149.2sec read.table.ffdf 30001001..40001000 (10000000) csv-read=217.36sec ffdf-write=379.8sec read.table.ffdf 40001001..50001000 (10000000) csv-read=541.28secError: cannot allocate vector of size 381.5 Mb In addition: There were 14 warnings (use warnings() to see them) > warnings() Warning messages: 1: In match(levels(x), lev) : Reached total allocation of 7987Mb: see help(memory.size) 2: In match(levels(x), lev) : Reached total allocation of 7987Mb: see help(memory.size) -- View this message in context: http://r.789695.n4.nabble.com/ff-package-reading-selected-columns-from-csv-tp4637794p4637900.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.