I'm using the sizeplot() function from the plotrix package to plot binomial
data in which there are a number of repeated values.

a portion of my data look like this:

mortality = c(1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1,
0, 0, 1, 0, 0, 1, 0, 1, 0)
ww.max = c(4.0,  5.0,  3.0,  2.0,  2.5,  2.5, 10.0,  9.0,  2.0,  0.5,  4.0,
3.0,  5.0,  1.0,  4.0, 2.0,  4.0,  3.0,  2.0,  5.0,  6.0,  3.0,  4.0,  2.0,
3.0,  4.0,  4.0,  3.0,  5.0,  7.0)

I am using the following code for my graph:

sizeplot(ww.max, mortality, scale=1, pow=.75)

I would like to add a legend that indicates the relationship between size of
the point and the number of repetitions, any suggestions?

-- 
Liz Duermit
Marine Biology Master's Candidate
Grice Marine Lab
College of Charleston

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