问题描述
我正在设置箱形图以将其显示在ggplot2 facet_grid中，我想增加内部空白.
I am setting up boxplots to present these in a ggplot2 facet_grid and I would like to increase the inner margin.
不幸的是，我无法增加到小平面框架的距离.
Unfortunately, I am not able to increase the distance to the frame of the facet.
如何如蓝色箭头所示增加内部页边距(左右)?
How could I increase the inner margin (left and right) as indicated by the blue arrows?
require(ggplot2)
dat <- rbind(data.frame(approach=1,product=1,value=seq(1,20,0.5)),
data.frame(approach=1,product=2,value=seq(5,15,0.3)),
data.frame(approach=1,product=3,value=seq(5,17,0.2)),
data.frame(approach=2,product=1,value=seq(1,13,0.3)),
data.frame(approach=2,product=2,value=seq(3,18,0.5)),
data.frame(approach=2,product=3,value=seq(4,25,0.7)),
data.frame(approach=3,product=1,value=seq(1,15,0.6)),
data.frame(approach=3,product=2,value=seq(3,16,0.5)),
data.frame(approach=3,product=3,value=seq(1,10,0.1)))
gg1 <- ggplot(dat, aes(group =product, y = value)) +
geom_boxplot() +
ylab("size (cm)")+
theme(panel.spacing = unit(0.1, 'lines')) +
theme(plot.background = element_rect(fill ="lightgrey" )) +
scale_fill_grey(start = 0.0, end = 1) +
theme_bw()+
xlab("") +
facet_grid(cols=vars(approach)) +
theme(axis.text.x = element_text(colour="black")) +
theme(axis.text.y=element_text(colour="black"))+
theme(panel.spacing=unit(0,"lines")) +
guides(fill=guide_legend(title="Products")) +
theme(plot.background = element_rect(fill ="lightgrey" ))
gg1
此外，它在离散范围内如何工作?
Also, how would it work for a discrete scale?
require(ggplot2)
dat <- rbind(data.frame(approach=1,product=1,value=seq(1,20,0.5)),
data.frame(approach=1,product=2,value=seq(5,15,0.3)),
data.frame(approach=1,product=3,value=seq(5,17,0.2)),
data.frame(approach=2,product=1,value=seq(1,13,0.3)),
data.frame(approach=2,product=2,value=seq(3,18,0.5)),
data.frame(approach=2,product=3,value=seq(4,25,0.7)),
data.frame(approach=3,product=1,value=seq(1,15,0.6)),
data.frame(approach=3,product=2,value=seq(3,16,0.5)),
data.frame(approach=3,product=3,value=seq(1,10,0.1)))
dat$product<-as.factor(dat$product)
gg1<-ggplot(dat, aes(x =product, y = value)) +
geom_boxplot() +
ylab("size (cm)")+
theme(panel.spacing = unit(0.1, 'lines')) +
theme(plot.background = element_rect(fill ="lightgrey" )) +
scale_fill_grey(start = 0.0, end = 1) +
theme_bw()+ xlab("") +
facet_grid(cols=vars(approach)) +
theme(axis.text.x = element_text(colour="black")) +
theme(axis.text.y=element_text(colour="black"))+
theme(panel.spacing=unit(0,"lines")) +
guides(fill=guide_legend(title="Products")) +
theme(plot.background = element_rect(fill ="lightgrey" ))
gg1
推荐答案
您要查看的部分是通过比例尺控制的，而不是刻面或主题边距.
The part you are looking at is controlled from scales, not facets or theme margins.
以下任何一种都可以.在这种情况下，它们的结果类似，因为您的x值范围在(-1, 1)附近.通常，请查找?expand_scale的帮助文件，以获取乘性与加性扩展因子的示例
Either of the following would work. Their results are similar in this case, since your x-values' range is in the neighbourhood of (-1, 1). More generally, look up the help file for ?expand_scale for examples of multiplicative vs. additive expansion factors
gg1 + scale_x_continuous(expand = c(0.2, 0)) # expand scales by a multiple of 20%
gg1 + scale_x_continuous(expand = c(0, 0.2)) # expand scales by an addition of 0.2
这篇关于如何增加facet_grid中ggplot箱线图的内部边距?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！