我想以某种方式概述包含stat_summary_2d()
图中数据的区域。
例如,我有以下数据:
my.test = data.frame(x = c(1,2,3),
y = c(1,2,3),
z = c(1,2,3))
我将其绘制如下:
p.test <- ggplot(data = my.test,
aes(x = x,
y = y,
z = z)) +
stat_summary2d(breaks = list(x = seq(-.5,3.5,1),
y = seq(0.5,3.5,1))) +
scale_fill_gradient2(name = "z",
high = "red",
mid = "grey",
low = "blue",
midpoint = 2,
breaks = seq(0,3,1),
limits = c(0,4),
guide = "colourbar")
这给了我这个:
这没关系。但是,有时候,我更喜欢漂亮的白色中点,我喜欢在白色背景上绘制出版物的内容:
p.test2 <- p.test +
scale_fill_gradient2(name = "z",
high = "red",
mid = "white",
low = "blue",
midpoint = 2,
breaks = seq(0,3,1),
limits = c(0,4),
guide = "colourbar")
ggsave(file = file.path("ptest2.png"),
plot = p.test2 + theme_bw(base_size = 8),
width=3, height=2, dpi=150)
所以我最终得到了这个:
......我的数据不可见。
我的问题:有没有办法在stat_summary2d()
生成的方框周围添加细的彩色线?
答案 0 :(得分:1)
它就像使用colour =
参数一样简单。请记住,在ggplot2中,colour
用于行和点,fill
用于填充。线条粗细由size
参数设置。
p.test <- ggplot(data = my.test, aes(x = x, y = y,z = z)) +
stat_summary2d(colour = "black", #size = 0.5,
breaks = list(x = seq(-.5,3.5,1),
y = seq(0.5,3.5,1))) +
scale_fill_gradient2(name = "z",
high = "red",
mid = "white",
low = "blue",
midpoint = 2,
breaks = seq(0,3,1),
limits = c(0,4),
guide = "colourbar") +
theme_bw()
p.test