There are several options. You can use the sunflowerplot function.
You can plot solid points with a small alpha value (not all graphics devices support this), so that just a few points show up pale, but a lot show up as more opaque. You can use the symbols function (or bubbleplot, or my.symbols, or ..., from other packages). You can use the hexbin package and function (bioconductor) (I think this is my prefered method). Hope this helps, -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare [EMAIL PROTECTED] (801) 408-8111 > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Jan Akko Eleveld > Sent: Thursday, August 21, 2008 3:11 PM > To: r-help@r-project.org > Subject: [R] HELP: how to add weight to a [x,y] coordinate > > > Anyone who can help me with the following question? > > > How can I add weight to [x,y] coordinates on a graph/scatterplot? > > > Background: > Monte Carlo simulation generated 730,000 [x,y] coordinates > with a weight attached (from 0-0.5). > Both x and y are rounded and fit on a raster with x-axis > 0-170 months (smalles unit = 1 month) and y-axis 0-6 > (smallest unit=0.1). > I would like every [x,y] to add its weight, so that after all > 730,000 [x,y] are plotted, a maximum likelyhood becomes > apparent through the size of the point that are made up by > accumulated weights. > > Thank you in advance for any thoughts! > > Best, Akko Eleveld > > > > ______________________________________________ > 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.
