Jari Oksanen wrote: > Wayne Aldo Gavioli <wgavioli <at> fas.harvard.edu> writes: > > >> 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"? >> >> >> > One suggestion seems to be still missing: 'sunflowerplot' of base R. May look > taggy, though, if you have 200 "petals". > > Actually the documentation of sunflowerplot is wrong in botanical sense. > Sunflowers have composite flowers in capitula, and the things called 'petals' > in > documentation are ligulate, sterile ray-florets (each with vestigial petals > which are not easily visible in sunflower, but in some other species you may > see > three (occasionally two) teeth). > Could you please put together a patch that replaces "petals" with "ligulate, sterile ray-florets" in appropriate places?
;-) Duncan Murdoch > cheers, jari oksanen > > ______________________________________________ > 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.
