Try 'hexbin' for plotting this many points. On Nov 21, 2007 5:05 AM, Alexy Khrabrov <[EMAIL PROTECTED]> wrote: > I get tables with millions of rows. For plotting to a screen-size > jpg, obviously just about 1000 points are enough. Instead of feeding > plot() the original millions of rows, I'd rather shrink the original > dataframe, using some kind of the following interpolation: > > -- split dataframe into chunks of N rows each, e.g. 1000 rows each > -- compute average for each column > -- issue one new row of those averages into the shrunk result > > Is there any existing package to do that in R? Otherwise, which R > idioms are most effective to achieve that? > > Cheers, > Alexy > > ______________________________________________ > 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. >
-- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem you are trying to solve? ______________________________________________ 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.
