[英]How to create a faceted line-graph using ggplot?
我有一個使用此代碼創建的數據框:
require(reshape2)
foo <- data.frame( abs( cbind(rnorm(3),rnorm(3, mean=.8),rnorm(3, mean=.9),rnorm(3, mean=1))))
qux <- data.frame( abs( cbind(rnorm(3),rnorm(3, mean=.3),rnorm(3, mean=.4),rnorm(1, mean=2))))
bar <- data.frame( abs( cbind(rnorm(3,mean=.4),rnorm(3, mean=.3),rnorm(3, mean=.9),rnorm(3, mean=1))))
colnames(foo) <- c("w","x","y","z")
colnames(qux) <- c("w","x","y","z")
colnames(bar) <- c("w","x","y","z")
rownames(foo) <- c("n","q","r")
rownames(qux) <- c("n","q","r")
rownames(bar) <- c("n","q","r")
foo <- cbind(ID=rownames(foo),foo)
bar <- cbind(ID=rownames(bar),qux)
qux <- cbind(ID=rownames(bar),qux)
foo$fn <- "foo"
qux$fn <- "qux"
bar$fn <- "bar"
alldf<-rbind(foo,qux,bar)
alldf.m <- melt(alldf)
我想要做的是以facet格式創建一個ggplot
線條曲線,因此它會創建一個如下圖形:
實際圖形不包含向上線 - 這只是一個草圖,因此線條分離是清晰的。
我當前的代碼不起作用:
library(ggplot2)
p <- ggplot(data=alldf.m, aes(x=variable)) +
geom_line(aes(colour=ID),alpha=0.4)
p <- p + facet_wrap( ~ fn)
p
最好的方法是什么?
嘗試這個:
ggplot(data=alldf.m, aes(x=variable, y = value, colour = ID, group = ID)) +
geom_line() + facet_wrap(~fn)
即使它是OP所需的ggplot2,但我認為這個例子也適用於lattice
:
library(lattice)
xyplot(data=alldf.m, value~variable|fn, type ='b', groups = ID, auto.key = T)
並使用latticeExtra
我們可以獲得ggplot2
解決方案的一些東西:
p <- xyplot(data=alldf.m, value~variable|fn, type ='b', groups = ID, auto.key = T)
update(p , par.settings = ggplot2like())
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