[R] Bubble Plot

[Don MacQueen]

 From looking at the code for bubble(), it doesn't appear there's any 
way to force special treatment of selected values.

However, a simple work around would be to simply exclude the zero 
values from the plot(s) by subsetting your data creating a1 and a2. 
If you really want *no* representation, you're done. If you want them 
represented with the smallest dot size, then add them in afterwards 
with plot(), xyplot(), or spplot(), depending.

Or, you could make a personal copy of bubble() [renamed, of course], 
and modify it to handle zeros in a special manner. That doesn't look 
too hard to do.

-Don

At 6:27 PM -0700 9/27/09, Marion Wittmann wrote:
>Hello,
>
>  I am using the bubble plot and have been able to overlay two 
>different data sets on the same graphic successfully. I would like 
>to do the following and cannot:
>
>1) suppress the zero values such that there is no representation of 
>them on my plot (i.e., the "zeroes" show up as the smallest dot 
>size, and I can't change this)
>
>2) Give values to y or x axes with values, and labels
>
>My script looks as such:
>
>coordinates(data) = ~y + x
>a1 = bubble(data, "Alive", zero.print = ".",maxsize = 5.0,
>	key.entries = 4*(1:6),col=c(0,3))
>a2 = bubble(handcore, "Dead", maxsize = 5.0, main = "",
>	key.entries =   5*(0:10),col=c(0,4))
>
>print(b1, more = TRUE)
>print(b2, more = FALSE)
>
>
>Thanks in advance for your help.
>
>mw
>
>Marion Wittmann, Ph.D.
>Tahoe Environmental Research Center
>University of California Davis
>
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-- 
--------------------------------------
Don MacQueen
Environmental Protection Department
Lawrence Livermore National Laboratory
Livermore, CA, USA
925-423-1062