I'd start with scatterplots of the two subsets (pass vs fail), but with
280k points, those are likely to be fairly uninformative masses of black
ink). However, there might be enough separation between them that you
don't need anything else.
If not, then a pair of hexbin plots (from the Bioconductor hexbin
package), e.g.
plot(hexbin(rnorm(280000), rnorm(280000)))
may work. Other possibilities are to use partially transparent points,
and possibly to use jittering if there are a lot of ties.
I would avoid 3D histograms; they aren't nearly as informative.
Duncan Murdoch
On 9/8/2008 11:40 AM, Jason Thibodeau wrote:
I apologize, I forgot to type the title.
On Mon, Sep 8, 2008 at 11:39 AM, Jason Thibodeau <[EMAIL PROTECTED]>wrote:
Hello all,
I have a very large file (280k lines) containing three comma separated
variables. The first variable is a 0 or 1 depicting a pass or fail. The
other two are X and Y coordinates. Is there a good way I can represent this
data in a chart/plot form other than using a 3d histogram? If I need to use
the histogram, should I base my chart off the example contained in the RGL
package?
Thanks a lot.
--
Jason Thibodeau
ECE Dept., University of Connecticut
371 Fairfield Way, Storrs, CT 06269
Phone: 860-486-5274 , Fax: 860-486-2447
Email: [EMAIL PROTECTED]
URL: www.engr.uconn.edu/~jpt03002 <http://www.engr.uconn.edu/%7Ejpt03002>
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