Scatterplot Showing All Points

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