ggplot2 条形图,geom 底部和 x 轴之间没有空间,上方留有空间 [英] ggplot2 bar plot, no space between bottom of geom and x axis keep space above
问题描述
当我在 ggplot2 中绘制条形图时,我想将条形底部和 x 轴之间的空间减少到 0,但保持条形和绘图框上方的空间.我有一个技巧可以在下面做到这一点.它很脏,我想再次干净.有没有办法在没有肮脏的小黑客的情况下实现这种行为?
When I plot a bar graph in ggplot2 I would like to reduce the space between the bottom of the bars and the x-axis to 0, yet keep the space above the bars and the plot box. I have a hack to do it below. It's dirty and I want to be clean again. Is there a way to achieve this behavior without the dirty little hack?
默认(希望在条形上方留有空间,但不希望在条形下方留有空间):
ggplot(mtcars, aes(x=as.factor(carb))) +
geom_bar()
使用展开(不希望的上方有 0 个空格,但在条形下方有 0 个空格):
ggplot(mtcars, aes(x=as.factor(carb))) +
geom_bar() +
scale_y_continuous(expand = c(0,0))
Dirty Hack(我喜欢它,但它......好吧,肮脏):
ggplot(mtcars, aes(x=as.factor(carb))) +
geom_bar() +
scale_y_continuous(expand = c(0,0)) +
geom_text(aes(x=1, y=10.3, label="Stretch it"), vjust=-1)
推荐答案
R 文档包括一个名为 expansion
的新便利函数,用于将 expand
参数作为 expand_scale()
自 ggplot2 v3.3.0 发布.
The R documentation includes a new convenience function called expansion
for the expand
argument as the expand_scale()
became deprecated as of ggplot2 v3.3.0 release.
ggplot(mtcars) +
geom_bar(aes(x = factor(carb))) +
scale_y_continuous(expand = expansion(mult = c(0, .1)))
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