如何在ggplot2对象的每个面上放置相同的平滑图形? [英] How do I place an identical smooth on each facet of a ggplot2 object?
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问题描述
例如< - data.frame(x = c(1:50,50:1) ),
y = c(1:50,1:50)+ rnorm(100),
g = rep(c(a,b),each = 50))
qplot(x,y,data = eg)+
facet_wrap(〜g)+
geom_smooth()
我希望能够在两个方面绘制总体平滑图以及具有特定平面的平滑图。
编辑:这里有一种方法。
my.smooth< - gam(y〜s(x),data = eg)
my.data< - data.frame(x = 1:50)
my.data $ y< - 预测(my。 smooth,newdata = my.data)
qplot(x,y,data = eg)+
facet_wrap(〜g)+
geom_smooth()+
geom_smooth (data = my.data)
感谢您的帮助!
Andrew
解决方案
将faceting变量设置为NULL
<$ p (x = c(1:50,50:1),
y = c(1:50,1)的数据库(ggplot2)
例如< :50)+ rnorm(100),
g = rep(c(a,b),each = 50))
p < - qplot(x,y,data = eg)+
facet_wrap(〜g)+
geom_smooth()
p + geom_smo oth(数据=在(例如,g < - NULL),fill =red)内
或者,如果您愿意,可以使用 facet_grid(...,margin = TRUE)
:
p + facet_grid(。〜g,margin = TRUE)
Here's an example:
eg <- data.frame(x = c(1:50, 50:1),
y = c(1:50, 1:50) + rnorm(100),
g = rep(c("a","b"), each=50))
qplot(x, y, data = eg) +
facet_wrap(~ g) +
geom_smooth()
I'd like to be able to plot the overall smooth on both facets as well as having the facet-specific smooths.
Edit: here's one way.
my.smooth <- gam(y ~ s(x), data = eg)
my.data <- data.frame(x = 1:50)
my.data$y <- predict(my.smooth, newdata = my.data)
qplot(x, y, data = eg) +
facet_wrap(~ g) +
geom_smooth() +
geom_smooth(data = my.data)
Thanks for any help!
Andrew
解决方案
Clever trick: setting the faceting variable to NULL
library(ggplot2)
eg <- data.frame(x = c(1:50, 50:1),
y = c(1:50, 1:50) + rnorm(100),
g = rep(c("a","b"), each=50))
p <- qplot(x, y, data = eg) +
facet_wrap(~ g) +
geom_smooth()
p + geom_smooth(data=within(eg, g <- NULL), fill="red")
Or if you prefer, use facet_grid(..., margins=TRUE)
:
p + facet_grid(.~g, margins=TRUE)
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