[英]ggplot2: Transparent legend background when stat_smooth is used
我有兩個情節。 一條線條平滑:
library(splines)
library(ggplot2)
ggplot(mtcars, aes(hp, qsec)) + stat_smooth(aes(group = cyl,
colour = factor(cyl)),
method = "glm",
formula = y ~ ns(x, 1),
level = 1e-9,
size = I(1)) +
theme(panel.background=element_rect(fill="transparent",colour=NA),
plot.background=element_rect(fill="transparent",colour=NA),
legend.key = element_rect(fill = "transparent", colour = "transparent"))
一個沒有:
ggplot(mtcars, aes(hp, qsec)) +
geom_point(aes(group = cyl, colour = factor(cyl))) +
theme(panel.background=element_rect(fill="transparent",colour=NA),
plot.background=element_rect(fill="transparent",colour=NA),
legend.key = element_rect(fill = "transparent", colour = "transparent"))
如何在第一個圖中獲得白色或透明的圖例背景? 為什么相同的主題命令在第二個繪圖中完成工作?
這似乎是灰色的背景是來自stat_smooth()
如解釋在這里 。 添加se=FALSE
會停用置信區間,似乎可以修復它:
ggplot(mtcars, aes(hp, qsec)) + stat_smooth(aes(group = cyl,
colour = factor(cyl)),
method = "glm",
formula = y ~ ns(x, 1),
level = 1e-9,
size = I(1),
se = FALSE) +
theme(panel.background=element_rect(fill="transparent",colour=NA),
plot.background=element_rect(fill="transparent",colour=NA),
legend.key = element_rect(fill = "transparent", colour = "transparent"))
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