r - 更改/减少 GGally 和 ggpairs 中的点大小

Question

ggpairs 中的点太大了。我如何使它们变小？

Answer 1

这基本上需要阅读帮助页面并完成示例。事实证明，有(至少)两组不同的属性可能会影响点的大小。下面你会看到我找到的两个。

require(ggplot2)
require(GGally)
data(diamonds, package="ggplot2")
diamonds.samp <- diamonds[sample(1:dim(diamonds)[1], 200), ]

# Custom Example  ( almost directly from help page)
pm <- ggpairs(
 diamonds.samp[, 1:5],
 mapping = ggplot2::aes(color = cut),
 upper = list(continuous = wrap("density", alpha = 0.5), combo = "box"),
 lower = list(continuous = wrap("points", alpha = 0.3,    size=0.1), 
              combo = wrap("dot", alpha = 0.4,            size=0.2) ),
 title = "Diamonds"
)
 pm