[英]Adding two y-axis titles on the same axis
我將使用來自先前問題的數據集和繪圖( Here ):
dat <- read.table(text = " Division Year OperatingIncome
1 A 2012 11460
2 B 2012 7431
3 C 2012 -8121
4 D 2012 15719
5 E 2012 364
6 A 2011 12211
7 B 2011 6290
8 C 2011 -2657
9 D 2011 14657
10 E 2011 1257
11 A 2010 12895
12 B 2010 5381
13 C 2010 -2408
14 D 2010 11849
15 E 2010 517",header = TRUE,sep = "",row.names = 1)
dat1 <- subset(dat,OperatingIncome >= 0)
dat2 <- subset(dat,OperatingIncome < 0)
ggplot() +
geom_bar(data = dat1, aes(x=Year, y=OperatingIncome, fill=Division),stat = "identity") +
geom_bar(data = dat2, aes(x=Year, y=OperatingIncome, fill=Division),stat = "identity") +
scale_fill_brewer(type = "seq", palette = 1)
它包括以下情節,這是我的問題所在:
我的問題:是否可以將y軸標簽更改為同一側的兩個不同標簽? 有人會說“負收入”,並且在y軸的底部。 另一個將說“正收入”,位於SAME y軸的上部。
我已經看到這個問題是針對不同比例(在相對側)的雙y軸提出的,但是我特別希望在同一y軸上提出此問題。 感謝任何幫助-如果可能的話,我也更願意使用ggplot2解決此問題。
您可以使用annotate
來添加負收入和正收入標簽。 要在繪圖面板外添加文本,您需要關閉剪輯。 以下是在繪圖面板內部和外部添加文本的示例:
# Plot
p = ggplot() +
geom_bar(data = dat1, aes(x=Year, y=OperatingIncome, fill=Division),stat = "identity") +
geom_bar(data = dat2, aes(x=Year, y=OperatingIncome, fill=Division),stat = "identity") +
scale_fill_brewer(type = "seq", palette = 1) +
geom_hline(yintercept=0, lwd=0.3, colour="grey20") +
scale_x_continuous(breaks=sort(unique(dat$Year))) +
theme_bw()
# Annotate inside plot area
p + coord_cartesian(xlim=range(dat$Year) + c(-0.45,0.4)) +
annotate(min(dat$Year) - 0.53 , y=c(-5000,5000), label=c("Negative Income","Positive Income"),
geom="text", angle=90, hjust=0.5, size=3, colour=c("red","blue"))
# Annotate outside plot area by turning off clipping
pp = p + coord_cartesian(xlim=range(dat$Year) + c(-0.4,0.4)) +
annotate(min(dat$Year) - 0.9, y=c(-6000,10000), label=c("Negative Income","Positive Income"),
geom="text", angle=90, hjust=0.5, size=4, colour=c("red","blue")) +
labs(y="")
pp <- ggplot_gtable(ggplot_build(pp))
pp$layout$clip <- "off"
grid.draw(pp)
您也可以cowplot
建議使用Cowplot。 我以前沒有嘗試過,所以也許有比我在下面做的更好的方法,但是看起來您必須使用視口坐標而不是數據坐標來放置注釋。
# Use cowplot
library(cowplot)
ggdraw() +
draw_plot(p + labs(y=""), 0,0,1,1) +
draw_label("Positive Income", x=0.01, y = 0.5, col="blue", size = 10, angle=90) +
draw_label("Negative Income", x=0.01, y = 0.15, col="red", size = 10, angle=90)
我意識到問題中的數據僅用於說明,但是對於這樣的數據,折線圖可能更易於理解:
library(dplyr)
ggplot(dat, aes(x=Year, y=OperatingIncome, color=Division)) +
geom_hline(yintercept=0, lwd=0.3, colour="grey50") +
geom_line(position=position_dodge(0.2), alpha=0.5) +
geom_text(aes(label=Division), position=position_dodge(0.2), show.legend=FALSE) +
scale_x_continuous(breaks=sort(unique(dat$Year))) +
theme_bw() +
guides(colour=FALSE) +
geom_line(data=dat %>% group_by(Year) %>% summarise(Net=sum(OperatingIncome), Division=NA),
aes(x=Year, y=Net), alpha=0.4) +
geom_text(data=dat %>% group_by(Year) %>% summarise(Net=sum(OperatingIncome), Division=NA),
aes(x=Year, y=Net, label="Net"), colour="black")
或者,如果需要條形圖,則可能是這樣的:
ggplot() +
geom_bar(data = dat %>% arrange(OperatingIncome) %>%
mutate(Division=factor(Division,levels=unique(Division))),
aes(x=Year, y=OperatingIncome, fill=Division),
stat="identity", position="dodge") +
geom_hline(yintercept=0, lwd=0.3, colour="grey20") +
theme_bw()
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