如何在ggplot2 R图中设置轴限制? [英] How to set limits for axes in ggplot2 R plots?
问题描述
library(ggplot2)
胡萝卜< - 数据。帧(长度= rnorm(500000,10000,10000))
cukes < - data.frame(长度= rnorm(50000,10000,20000))
胡萝卜$ veg < - '胡萝卜'
cukes $ veg < - 'cuke'
vegLengths < - rbind(carrots,cukes)
ggplot(vegLengths,aes(length,fill = veg))+
geom_density(alpha = 0.2)
现在说我只想绘制 x = -5000
至 5000
,而不是整个范围。
我该怎么做?
基本上你有两个选择:
< pre $ scale_x_continuous(limits = c(-5000,5000))
或
coord_cartesian(xlim = c(-5000,5000))
第一个删除给定范围之外的所有数据点,第二个仅调整可见区域REA。在大多数情况下,你不会看到差异,但是如果你适合任何数据,它可能会改变拟合值。
你也可以使用简写函数 xlim
(或 ylim
),与第一个选项类似,它将删除给定范围之外的数据点:
+ xlim(-5000,5000)
有关更多信息,请查看
根据 CC BY 发布。
I plot the following:
library(ggplot2)
carrots <- data.frame(length = rnorm(500000, 10000, 10000))
cukes <- data.frame(length = rnorm(50000, 10000, 20000))
carrots$veg <- 'carrot'
cukes$veg <- 'cuke'
vegLengths <- rbind(carrots, cukes)
ggplot(vegLengths, aes(length, fill = veg)) +
geom_density(alpha = 0.2)
Now say I only want to plot the region between x=-5000
to 5000
, instead of the entire range.
How can I do that?
Basically you have two options
scale_x_continuous(limits = c(-5000, 5000))
or
coord_cartesian(xlim = c(-5000, 5000))
Where the first removes all data points outside the given range and the second only adjusts the visible area. In most cases you would not see the difference, but if you fit anything to the data it would probably change the fitted values.
You can also use the shorthand function xlim
(or ylim
), which like the first option removes data points outside of the given range:
+ xlim(-5000, 5000)
For more information check the description of coord_cartesian
.
The RStudio cheatsheet for ggplot2
makes this quite clear visually. Here is a small section of that cheatsheet:
Distributed under CC BY.
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