使用 facet_wrap 应用于箱线图时删除一个 tableGrob [英] Removing one tableGrob when applied to a box plot with a facet_wrap
本文介绍了使用 facet_wrap 应用于箱线图时删除一个 tableGrob的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在使用下面的代码来丰富箱线图,其中包含在 x 轴上创建的分类变量的汇总表.
I'm using the code below to enrich a box plot with a summary table for categorical variable created on the x-axis.
# Libs
require(ggplot2); require(gridExtra); require(grid); require(ggthemes)
# Data
data(mtcars)
# Function to summarise the data
fun_dta_sum <- function(var_sum, group, data) {
sum_dta <- data.frame(
aggregate(var_sum ~ group, FUN = min, data = data),
aggregate(var_sum ~ group, FUN = max, data = data),
aggregate(var_sum ~ group, FUN = mean, data = data))
sum_dta <- sum_dta[,c(1,2,4,6)]
colnames(sum_dta) <- c("Group (x axis)", "min", "max", "mean")
rownames(sum_dta) <- NULL
sum_dta[,-1] <-round(sum_dta[,-1],1)
return(sum_dta)
}
# Graph
ggplot(data = mtcars, aes(x = cyl, y = qsec, fill = as.factor(gear))) +
scale_x_discrete() +
geom_boxplot(outlier.shape = NA) +
scale_y_continuous(limits = quantile(mtcars$qsec, c(0.1, 0.9))) +
scale_fill_tableau(palette = "tableau10") +
xlab("am") + ylab("qsec") +
facet_wrap(~am, shrink = TRUE) +
theme_pander() +
annotation_custom(tableGrob(
fun_dta_sum(var_sum = mtcars$qsec, group = mtcars$cyl,
data = mtcars)
)) +
theme(axis.title = element_text(colour = 'black', face = 'bold', size = 12,
family = 'sans'),
axis.text.x = element_text(colour = 'black', size = 14, hjust = 1, vjust = 0.5),
axis.text.y = element_text(colour = 'black', size = 12),
axis.line = element_line(size = 1, colour = 'black'),
plot.title = element_text(size = 17, face = "bold", colour = "black"),
panel.background = element_rect(fill = NA, colour = 'black'),
panel.grid.major = element_line(colour = 'gray', linetype = 'dotted'),
panel.grid.minor = element_line(colour = 'gray', linetype = 'dotted'),
panel.margin = unit(1,"lines"),
strip.background = element_rect(fill = NA, colour = NA),
strip.text = element_text(colour = 'black', face = 'plain', size = 13),
plot.background = element_rect(fill = NA, colour = 'black', size = 0.25),
plot.margin = unit(c(10,10,10,10),"mm"),
legend.position = "bottom",
legend.background = element_rect(colour = "black"))
我希望通过以下方式更改代码:
I'm looking to alter the code in a following manner:
- 我只想要一张桌子,不要两张
- 我希望表格出现在左边第一个箱线图的右上角
- 我不希望在左侧显示
rownames
或其他任何创建斜体 (1,2,3) 的数字.
- I want only one table, not two
- I want for the table to appear in the top right corner of the first box plot from the left
- I don't want for the
rownames
or whatever else creates italicised (1,2,3) figures on the left hand side to appear.
推荐答案
让 annotation_custom 访问分面信息 *;这个微不足道的变化似乎可以解决问题,
It would probably make sense to let annotation_custom access facetting info *; this trivial change seems to do the trick,
library(ggplot2)
library(grid)
library(gridExtra)
annotation_custom2 <-
function (grob, xmin = -Inf, xmax = Inf, ymin = -Inf, ymax = Inf, data)
{
layer(data = data, stat = StatIdentity, position = PositionIdentity,
geom = ggplot2:::GeomCustomAnn,
inherit.aes = TRUE, params = list(grob = grob,
xmin = xmin, xmax = xmax,
ymin = ymin, ymax = ymax))
}
p <- ggplot(mtcars) + geom_point(aes(mpg, wt)) + facet_wrap(~ cyl)
tg <- tableGrob(iris[1:2,1:2], rows=NULL)
# position the table within the annotation area
tg$vp=viewport(x=unit(0,"npc") + 0.5*sum(tg$widths),
y=unit(0,"npc") + 0.5*sum(tg$heights))
# need to wrap in a gTree since annotation_custom overwrites the vp
g <- grobTree(tg)
p + annotation_custom2(g, data=data.frame(cyl=8))
编辑 * hadley
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