CODEWITHSUNDEEP
rggplot2
B. Davis
B. Davis

Reputation: 3441

Changing size of the dots in a balloon plot and keeping zero values

With these data 

Data <- structure(list(ObsVal = c(22L, 50L, 8L, 15L, 54L, 30L, 11L, 90L, 
6L, 53L, 9L, 42L, 72L, 40L, 60L, 58L, 1L, 20L, 37L, 2L, 50L, 
68L, 20L, 19L, 58L, 5L), Porp = c(0.0909090909090909, 0.02, 0, 
0, 0, 0, 0.272727272727273, 0.455555555555556, 0, 0.452830188679245, 
0.111111111111111, 0.404761904761905, 0, 0.025, 0.0166666666666667, 
0.120689655172414, 0, 0.1, 0.108108108108108, 0, 0, 0.0294117647058824, 
0, 0, 0.310344827586207, 0), Pred = c(26, 52, 6, 15, 39, 30, 
13, 85, 8, 62, 5, 48, 92, 52, 71, 68, 1, 28, 47, 1, 41, 106, 
29, 19, 39, 7)), .Names = c("ObsVal", "Porp", "Pred"), class = "data.frame", row.names = c(NA, 
-26L))

and this code

require(ggplot2)
p <- ggplot(Data, aes(x=ObsVal, y=Pred, size=Porp))+
    geom_point()+
    geom_smooth(method=lm, color="red")+
    theme_bw()+
    guides(size=FALSE)
p

I can make this plotenter image description here

but the dots are too small. When I increase the size with the code 

p+scale_size_area(max_size=10)

The dots get larger, but I loose the values where Porp is zero. enter image description here

I tried to add 1 to all Porp values, but then the sizes were all the same.

It is possible to increase the size of the dots as in the 2nd fig, but also include points were Porp is zero?

Upvotes: 1

Views: 979

Answers (1)

Henrik
Henrik

Reputation: 67828

You may try to use scale_size_continuous and its range argument. E.g. something like this:

p + scale_size_continuous(range = c(2, 10))

Upvotes: 2

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