Wayne, I am fond of the bagplot (think 2D box plot) to replace scatter plots for large N. See http://www.wiwi.uni-bielefeld.de/~wolf/software/aplpack/ and aplpack in CRAN.
-- HTH, Jim Porzak Responsys, Inc. San Francisco, CA http://www.linkedin.com/in/jimporzak On Dec 17, 2007 5:14 PM, Wayne Aldo Gavioli <[EMAIL PROTECTED]> wrote: > > > Hello all, > > > I'm trying to graph a scatterplot of a large (5,000 x,y coordinates) of data > with the caveat that many of the data points overlap with each other (share > the > same x AND y coordinates). In using the usual "plot" command, > > > > plot(education, xlab="etc", ylab="etc") > > > it seems that the overlap of points is not shown in the graph. Namely, there > are 5,000 points that should be plotted, as I mentioned above, but because so > many of the points overlap with each other exactly, only about 50-60 points > are > actually plotted on the graph. Thus, there's no indication that Point A > shares > its coordinates with 200 other pieces of data and thus is very common while > Point B doesn't share its coordinates with any other pieces of data and thus > isn't common at all. Is there anyway to indicate the frequency of such points > on such a graph? Should I be using a different command than "plot"? > > > Thanks, > > > Wayne > > ______________________________________________ > 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. > ______________________________________________ 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.
