我已經調用了ggplot2
文檔,Stack和ggplot2
Google羣組電子郵件列表 - 但無濟於事。在ggplot2中繪製較大點較亮點和較小點時合併圖例
請有人能告訴我如何合併alpha
(不透明度)和size
的圖例?它們分別標題爲「(1-val2)」和「val2」。
正常情況下,將alpha和大小映射到val2會自動合併軸。但是因爲我使用的是「val2」和「1-val2」,所以這不會發生。我玩過scale_size_continuous
和scale_alpha_continuous
,但沒有成功。
這裏是一個MWE:
require(ggplot2)
dummy <- data.frame(x=c(runif(12,5,10)),
y=c(runif(12,5,10)),
val1=c("a","b","c","a","b","c","a","b","c","a","b","c"),
val2=c(0.4,0.6,0.7,0.2,0.8,0.6,0.7,0.2,0.5,0.8,0.4,0.7))
p <- ggplot() +
geom_point(data=dummy, aes(x=x, y=y,color=val1, size=val2, alpha=(1-val2)))
非常感謝! – user3580643 2014-10-05 19:23:58