指定ggplot2面板宽度 [英] Specifying ggplot2 panel width
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问题描述
我在同一页面上有两个ggplots,我希望它们的面板宽度相同。
一些示例数据:
dfr1 < - data.frame(
time = 1:10,
value = runif(10)
)
dfr2< - data.frame(
time = 1:10,
value = runif(10,1000,1001)
)
一张在另一张下面的图:
p1 < - ggplot(dfr1,aes(time,value))+ geom_line()
p2 < - ggplot(dfr2,aes(time,value))+ geom_line b
grid.newpage()
pushViewport(viewport(layout = grid.layout(2,1)))
print(p1,vp = viewport(layout.pos.row = 1, layout.pos.col = 1))
print(p2,vp = viewport(layout.pos.row = 2,layout.pos.col = 1))
如何在每个图表中指定面板宽度和位置,以便让它们排列?
(我不想将这些情节与分面相结合;这在我的现实世界中是不合适的)
解决方案
原始解决方案:
#install.packages(ggExtra,repos =http://R-Forge.R-project.org)
#library(ggExtra)
#align.plots( p1,p2)
编辑(22/03/13):
由于ggExtra不再存在(并且ggplot2的许多内部已经改变),最好使用gtable包提供的合并函数(rbind,cbind)。
gl = lapply(list(p1,p2),ggplotGrob)
library(gtable)
g = do.call(rbind,c gl,size =first))
g $ widths = do.call(unit.pmax,lapply(gl,[[,widths))
grid.newpage )
grid.draw(g)
I have two ggplots on the same page, and I'd like their panels to be the same width.
Some sample data:
dfr1 <- data.frame(
time = 1:10,
value = runif(10)
)
dfr2 <- data.frame(
time = 1:10,
value = runif(10, 1000, 1001)
)
One plot below the other:
p1 <- ggplot(dfr1, aes(time, value)) + geom_line()
p2 <- ggplot(dfr2, aes(time, value)) + geom_line()
grid.newpage()
pushViewport(viewport(layout = grid.layout(2, 1)))
print(p1, vp = viewport(layout.pos.row = 1, layout.pos.col = 1))
print(p2, vp = viewport(layout.pos.row = 2, layout.pos.col = 1))
How do I specify the panel widths and positions in each plot, in order to make them line up?
(I don't want to combine the plots with faceting; it isn't appropriate in my real-world example.)
解决方案
Original solution:
# install.packages("ggExtra", repos="http://R-Forge.R-project.org")
# library(ggExtra)
# align.plots(p1, p2)
Edit (22/03/13):
Since ggExtra doesn't exist anymore (and many internals of ggplot2 have changed), it's better to use the merging functions (rbind, cbind) provided by the gtable package,
gl = lapply(list(p1,p2), ggplotGrob)
library(gtable)
g = do.call(rbind, c(gl, size="first"))
g$widths = do.call(unit.pmax, lapply(gl, "[[", "widths"))
grid.newpage()
grid.draw(g)
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