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目标:绘制这样的图像:
特色:
1.两个不同的时间序列;
2. 下面板有一个反向的y轴;
3. 两个地 block 上的阴影。
可能的解决方案:
1. 刻面不合适 - (1) 不能只使一个刻面的 y 轴反转而保持其他刻面不变。 (2) 难以一一调整个别方面。
2. 使用视口(viewport)使用以下代码排列单个绘图:
library(ggplot2)
library(grid)
library(gridExtra)
##Import data
df<- read.csv("D:\\R\\SF_Question.csv")
##Draw individual plots
#the lower panel
p1<- ggplot(df, aes(TIME1, VARIABLE1)) + geom_line() + scale_y_reverse() + labs(x="AGE") + scale_x_continuous(breaks = seq(1000,2000,200), limits = c(1000,2000))
#the upper panel
p2<- ggplot(df, aes(TIME2, V2)) + geom_line() + labs(x=NULL) + scale_x_continuous(breaks = seq(1000,2000,200), limits = c(1000,2000)) + theme(axis.text.x=element_blank())
##For the shadows
#shadow position
rects<- data.frame(x1=c(1100,1800),x2=c(1300,1850),y1=c(0,0),y2=c(100,100))
#make shadows clean (hide axis, ticks, labels, background and grids)
xquiet <- scale_x_continuous("", breaks = NULL)
yquiet <- scale_y_continuous("", breaks = NULL)
bgquiet<- theme(panel.background = element_rect(fill = "transparent", colour = NA))
plotquiet<- theme(plot.background = element_rect(fill = "transparent", colour = NA))
quiet <- list(xquiet, yquiet, bgquiet, plotquiet)
prects<- ggplot(rects,aes(xmin=x1,xmax=x2,ymin=y1,ymax=y2))+ geom_rect(alpha=0.1,fill="blue") + coord_cartesian(xlim = c(1000, 2000)) + quiet
##Arrange plots
pushViewport(viewport(layout = grid.layout(2, 1)))
vplayout <- function(x, y)
viewport(layout.pos.row = x, layout.pos.col = y)
#arrange time series
print(p2, vp = vplayout(1, 1))
print(p1, vp = vplayout(2, 1))
#arrange shadows
print(prects, vp=vplayout(1:2,1))
问题:
谷歌搜索后:
gp1<- ggplot_gtable(ggplot_build(p1))
gp2<- ggplot_gtable(ggplot_build(p2))
gprects<- ggplot_gtable(ggplot_build(prects))
maxWidth = unit.pmax(gp1$widths[2:3], gp2$widths[2:3], gprects$widths[2:3])
gp1$widths[2:3] <- maxWidth
gp2$widths[2:3] <- maxWidth
gprects$widths[2:3] <- maxWidth
grid.arrange(gp2, gp1, gprects)
现在,上下面板的 x 轴确实对齐了。但影子位置仍然是错误的。更重要的是,我不能在两个时间序列上重叠阴影图。经过几天的尝试,我几乎放弃了......
有人可以帮帮我吗?
最佳答案
您也可以仅使用基本绘图功能来实现此特定绘图。
#Set alignment for tow plots. Extra zeros are needed to get space for axis at bottom.
layout(matrix(c(0,1,2,0),ncol=1),heights=c(1,3,3,1))
#Set spaces around plot (0 for bottom and top)
par(mar=c(0,5,0,5))
#1. plot
plot(df$V2~df$TIME2,type="l",xlim=c(1000,2000),axes=F,ylab="")
#Two rectangles - y coordinates are larger to ensure that all space is taken
rect(1100,-15000,1300,15000,col="red",border="red")
rect(1800,-15000,1850,15000,col="red",border="red")
#plot again the same line (to show line over rectangle)
par(new=TRUE)
plot(df$V2~df$TIME2,type="l",xlim=c(1000,2000),axes=F,ylab="")
#set axis
axis(1,at=seq(800,2200,200),labels=NA)
axis(4,at=seq(-15000,10000,5000),las=2)
#The same for plot 2. rev() in ylim= ensures reverse axis.
plot(df$VARIABLE1~df$TIME1,type="l",ylim=rev(range(df$VARIABLE1)+c(-0.1,0.1)),xlim=c(1000,2000),axes=F,ylab="")
rect(1100,-15000,1300,15000,col="red",border="red")
rect(1800,-15000,1850,15000,col="red",border="red")
par(new=TRUE)
plot(df$VARIABLE1~df$TIME1,type="l",ylim=rev(range(df$VARIABLE1)+c(-0.1,0.1)),xlim=c(1000,2000),axes=F,ylab="")
axis(1,at=seq(800,2200,200))
axis(2,at=seq(-6.4,-8.4,-0.4),las=2)
更新 - ggplot2 的解决方案
首先,制作两个包含矩形信息的新数据框。
rect1<- data.frame (xmin=1100, xmax=1300, ymin=-Inf, ymax=Inf)
rect2 <- data.frame (xmin=1800, xmax=1850, ymin=-Inf, ymax=Inf)
修改了您的原始情节代码 - 移动
data
和 aes
到里面geom_line()
,然后添加两个 geom_rect()
来电。最重要的部分是plot.margin=
在 theme()
.对于每个图,我将其中一个边距设置为 -1
线(p1
的上部和 p2
的底部) - 这将确保情节将加入。所有其他边距应该相同。对于 p2
还删除了轴刻度。然后将两个图放在一起。library(ggplot2)
library(grid)
library(gridExtra)
p1<- ggplot() + geom_line(data=df, aes(TIME1, VARIABLE1)) +
scale_y_reverse() +
labs(x="AGE") +
scale_x_continuous(breaks = seq(1000,2000,200), limits = c(1000,2000)) +
geom_rect(data=rect1,aes(xmin=xmin,xmax=xmax,ymin=ymin,ymax=ymax),alpha=0.1,fill="blue")+
geom_rect(data=rect2,aes(xmin=xmin,xmax=xmax,ymin=ymin,ymax=ymax),alpha=0.1,fill="blue")+
theme(plot.margin = unit(c(-1,0.5,0.5,0.5), "lines"))
p2<- ggplot() + geom_line(data=df, aes(TIME2, V2)) + labs(x=NULL) +
scale_x_continuous(breaks = seq(1000,2000,200), limits = c(1000,2000)) +
scale_y_continuous(limits=c(-14000,10000))+
geom_rect(data=rect1,aes(xmin=xmin,xmax=xmax,ymin=ymin,ymax=ymax),alpha=0.1,fill="blue")+
geom_rect(data=rect2,aes(xmin=xmin,xmax=xmax,ymin=ymin,ymax=ymax),alpha=0.1,fill="blue")+
theme(axis.text.x=element_blank(),
axis.title.x=element_blank(),
plot.title=element_blank(),
axis.ticks.x=element_blank(),
plot.margin = unit(c(0.5,0.5,-1,0.5), "lines"))
gp1<- ggplot_gtable(ggplot_build(p1))
gp2<- ggplot_gtable(ggplot_build(p2))
maxWidth = unit.pmax(gp1$widths[2:3], gp2$widths[2:3])
gp1$widths[2:3] <- maxWidth
gp2$widths[2:3] <- maxWidth
grid.arrange(gp2, gp1)
关于r - 如何对齐多个ggplot2图并在所有图上添加阴影,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/15016995/