我正在尝试将多个图与方面对齐。我的问题有点小但令人恼火:我可以制作一个绘图,以便绘图区域对齐并且刻面本身对齐,但刻面条的宽度并不完全相同。如果刻面的标签长度不同,则刻面条的大小将调整为使文本可以适合刻面。到目前为止,我无法找到一种在对齐多个图时使所有刻面条具有相同宽度的方法。
这是我想要对齐的图类型以及我为对齐它们所做的努力的示例:
library(data.table)
library(ggplot2)
library(foreach)
library(stringr)
library(cowplot)
# example data to show how aligning faceted plots is not quite right
plotvars = c(paste0("plot1_var", 1:7), paste0("plot2_var",1:5), paste0("plot3_var",1:10))
data =
foreach(p=plotvars,.combine = "rbind") %do% {
d = data.table(plot = rep(str_extract(p,pattern = "plot[[:digit:]]"),2),
plot_variables = rep(p,2),
fill_categories = c("fill1","fill2"),
number = sample(1:1000, size = 2))
d[, facet_variables := ifelse(plot=="plot1",
rep(sample(paste0("facet",1:3),size=1),2),
ifelse(plot=="plot2",
rep(sample(paste0("facet_title",1:3),size=1),2),
ifelse(plot=="plot3",
rep(sample(paste0("facet_title_longer",1:3),size=1),2),
NA)))]
d
}
# function to make stacked barplots with facets + coord_flip
make_plot = function(data, plot_var) {
ggplot(data[plot==plot_var],
aes(x=plot_variables,
y=number,
fill=fill_categories))+
geom_bar(stat="identity")+
coord_flip()+
facet_grid(facet_variables ~ .,
space="free",
scales="free")+
theme(strip.text.y = element_text(angle=0),
legend.position = "none")
}
p1 = make_plot(data=data,plot_var="plot1")
p1
p2 = make_plot(data=data,plot_var="plot2")
p2
p3 = make_plot(data=data,plot_var = "plot3")
p3
# using 'cowplot::plot_grid' gives strange re-sizing of individual bars
cowplot::plot_grid(p1,p2,p3, ncol=1,nrow=3,align = "hv")
# try gtable_rbind version
g1=ggplotGrob(p1)
g2=ggplotGrob(p2)
g3=ggplotGrob(p3)
# this plot keeps the bar widths the correct size, but the facets are still incorrectly different widths.
ggdraw(gridExtra::gtable_rbind(g1,g2,g3))
如何使小平面条在图上具有相同的宽度?