[英]Set breaks between values in continuous axis of ggplot
How can we set the breaks of continous axis every 2 numbers if we have a very big range of values in an axis and cannot set it manually?如果我们在一个轴上有很大范围的值并且不能手动设置它,我们如何设置每 2 个数字的连续轴的中断?
p1 <- ggplot(mpg, aes(displ, hwy)) +
geom_point()
p1 + scale_x_continuous(breaks = c(2, 4, 6))
From the ?scale_x_continuous
help page, breaks
can be (among other options)从?scale_x_continuous
帮助页面中,可以(以及其他选项) breaks
A function that takes the limits as input and returns breaks as output A function 将限制作为输入并返回中断为 output
Here's an anonymous function going from the (floored) min to the (ceilinged) max by 2:这是一个匿名的 function 从(地板)最小值到(天花板)最大值 2:
ggplot(mpg, aes(displ, hwy)) +
geom_point() +
scale_x_continuous(breaks = \(x) seq(floor(x[1]), ceiling(x[2]), by = 2))
Alternately you could still use seq
for finer control, more customizable, less generalizable:或者,您仍然可以使用seq
进行更精细的控制、更可定制、更不通用:
ggplot(mpg, aes(displ, hwy)) +
geom_point() +
scale_x_continuous(breaks = seq(2, 6, by = 2))
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