自定义背景以突出显示ggplot中的数据范围 [英] Customize background to highlight ranges of data in ggplot

问题描述

我想在我的ggplot中设置背景颜色来突出显示数据范围。特别是，我想用绿色， [ - 0.25，-0.1）突出显示 [ - 0.1,0.1] >和（0.1,0.25）换成橙色。换句话说，我需要的是带有一些透明度的酒吧，其y-限制是图的y范围，限制是由我设定的。

理想情况下，我想要对 coord_cartesian（...）（如设置 vline（...，size = X）会）此外，如果有独立于任何数据的东西，并且完全基于plot坐标，我尝试了 geom_segment ，但我无法确定如何设置可以工作的宽度。

<$ p $ b $< code> library（ggplot2）
x< -c（seq（-1,1，by = .001））
y< - rnorm（length（x））
df < - as.data.frame（x = x，y = y）

ggplot（df，aes（x，y））+
geom_point（aes（y * = abs（x）），alpha = .2，size = 5）+
theme_bw（）+
coord_cartesian（xlim = c（ - 。5，.5），ylim = c（-1， 1））

解决方案

您可以使用 geom_rect（）并设置 ymin 和 ymax 值改为 -Inf 和 Inf 。但根据@sc_evens回答这个问题您必须将 data 和 aes（）移动到 geom_point（） code>，并保留 ggplot（）空以确保 geom_rect的 alpha = （）按预期工作。

  ggplot（）+ 
 geom_point（data = df ，aes（x = y * abs（x），y​​ = y），alpha = .2，size = 5）+ 
 geom_rect（aes（xmin = -0.1，xmax = 0.1，ymin = -Inf，ymax （x = -0.25，xmax = -0.1，ymin = -Inf，ymax = Inf），alpha = 0.1，fill =inf，alpha = 0.1，fill =green）+ 
 geom_rect橙色）+ 
 geom_rect（aes（xmin = 0.1，xmax = 0.25，ymin = -Inf，ymax = Inf），alpha = 0.2，fill =orange）+ 
 theme_bw（）+ 
 coord_cartesian（xlim = c（ - 。5，.5），ylim = c（-1,1））
  

I want to set background colors in my ggplot to highlight ranges of data. Particularly, I want to highlight [-0.1,0.1] with, say, green,[-0.25,-0.1) and (0.1,0.25] with orange. In other words, what I need are bars with some alpha-transparency whose y-limits are the plot's y range, and x-limits are set by me.

Ideally, I would want something that would not be sensitive to coord_cartesian(...) (as setting vline(...,size = X) would). Additionally, it would be nice to have something independent from any data, and based solely on plot coordinates. I tried geom_segment, but I could not figure it our how to set a width that would work.

library(ggplot2)
x <- c(seq(-1, 1, by = .001))
y <- rnorm(length(x))
df <- as.data.frame(x=x,y=y)

ggplot(df,aes(x,y)) +
  geom_point(aes(y*abs(x)),alpha=.2,size=5) +
  theme_bw() +
  coord_cartesian(xlim = c(-.5,.5),ylim=c(-1,1))

解决方案

You can add the "bars" with geom_rect() and setting ymin and ymax values to -Inf and Inf. But according to @sc_evens answer to this question you have to move data and aes() to geom_point() and leave ggplot() empty to ensure that alpha= of geom_rect() works as expected.

ggplot()+
  geom_point(data=df,aes(x=y*abs(x),y=y),alpha=.2,size=5) +
  geom_rect(aes(xmin=-0.1,xmax=0.1,ymin=-Inf,ymax=Inf),alpha=0.1,fill="green")+
  geom_rect(aes(xmin=-0.25,xmax=-0.1,ymin=-Inf,ymax=Inf),alpha=0.1,fill="orange")+
  geom_rect(aes(xmin=0.1,xmax=0.25,ymin=-Inf,ymax=Inf),alpha=0.2,fill="orange")+
  theme_bw() +
  coord_cartesian(xlim = c(-.5,.5),ylim=c(-1,1))

这篇关于自定义背景以突出显示ggplot中的数据范围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IT屋！