我想在条形图上添加一行。但是,当我使用下面的代码时,生成的行不适合绘图 - 它太短,即使该行的数据系列与barplot数据系列具有相同的长度。
这是一个可重复的例子:
dlib
答案 0 :(得分:0)
您可以尝试:
# creating the barplots
h <- barplot(pos, ylim=c(-10,10), col="darkolivegreen", border="darkolivegreen", yaxt="n")
barplot(neg, add=T, col="darkgoldenrod3",border="darkgoldenrod3",yaxt="n")
# adding the horizontal ablines
abline(h=c(-10,-8,-6,-4,-2,0,2,4,6,8,10),col = grey(0.6), lty=3)
abline(v=h[c(1,4,7)], col = grey(0.6), lty=3)
# plot the barplots again to overplot the ablines
barplot(pos, ylim=c(-10,10), col="darkolivegreen", border="darkolivegreen",add=T)
barplot(neg, add=T, col="darkgoldenrod3",border="darkgoldenrod3", yaxt="n")
# add the line using x values stored in h...the true positions of the middle of each bar
lines(x=h,y=net, col="firebrick4", lwd = 4)
# the box around the plot
box()
作为替代方案,您也可以使用ggplot2。数据准备工作使用dplyr
和tidyr
完成。所有包都包含在超级包tidyverse
中:
library(tidyverse)
d <- cbind.data.frame(id=seq_along(pos), pos, neg)
d %>% mutate(net=pos+neg) %>%
gather(key, value, -id, -net) %>%
ggplot(aes(x=id, y=value, fill=key)) +
geom_bar(stat="identity") +
geom_line(aes(x=id, y=net), size=3) +
theme_bw() +
scale_x_continuous(breaks = c(1,4,7))+
theme(axis.title.x=element_blank(),
axis.text.x=element_blank(),
axis.ticks.x=element_blank(),
panel.grid.minor.x=element_blank())+
ylim(-10,10)