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Alex Rivera
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Is there a way to sum data with ggplot2 ? I want to do a bubble map with the size depending of the sum of z. Currently I'm doing something like dd <- ddply(d, .(x,y), transform, z=sum(z)) qplot(x,y, data=dd, size=z) But I feel I'm writing the same thing twice, I would like to be able to write something qplot(x,y, data=dd, size=sum(z)) I had a look at stat_sum and stat_summmary but I'm not sure they are appropriate either. Is it possible to it with ggplot2 ? If not, what would be best way to write those 2 lines.
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