关闭ggplot中的一些传说 [英] Turning off some legends in a ggplot

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问题描述

  mov<  -  subset(movies,length!= )
(p0 < - ggplot(mov,aes(year,rating,color = length,shape = mpaa))+
geom_point()

我可以关闭所有图例的显示:

(p1 < -  p0 + theme(legend.position =none))

传递 show_guide = FALSE geom_point (按照

 <$> 

c $ c>(p2 < - ggplot(mov,aes(year,rating,color = length,shape = mpaa))+
geom_point(show_guide = FALSE)

但是如果我想关闭颜色图例呢?似乎没有办法告诉 show_guide 哪个图例应用其行为。

 (p3)  <  -  ggplot(mov,aes(year,rating,color = length,shape = mpaa))+ 
scale_colour_discrete(show_guide = FALSE)+
geom_point()

#discrete_scale中的错误

(p4 < - ggplot(mov,aes(year,rating,shape = mpaa))+
aes(color = length,show_guide = FALSE)+
geom_point()

#两个传说都是

这个问题表明,控制传说的现代(自ggplot2 v0.9.2)方式与 guides 函数。



我希望能够做到像


$ b $ (
color = guide_legend(show = FALSE)

  p0 + p> 

guide_legend 没有show参数。

我如何指定w您可以使用 guide = FALSE 来显示它们吗?

scale _......()来压制图例。



对于您的示例,您应该使用 scale_colour_continuous()因为长度是连续变量(不是离散的)。

< $ p $ (p3 < - ggplot(mov,aes(year,rating,color = length,shape = mpaa))+
scale_colour_continuous(guide = FALSE)+
geom_point()

或者使用函数 guides() 您应该设置 FALSE 作为您不想显示为图例的元素/美学,例如填充形状颜色

  p0 < -  ggplot(mov,aes(year,rating,color = length,shape = mpaa))+ 
geom_point()
p0 + (color = FALSE)



UPDATE



两个提供的解决方案都可以工新的 ggplot2 版本2.0.0但是 movies 数据集不再存在于此库中。相反,您必须使用新包 ggplot2movies 来检查这些解决方案。

  library(ggplot2movies)
data(movies)
mov < - subset(movies,length!=)


Suppose I have a ggplot with more than one legend.

mov <- subset(movies, length != "")
(p0 <- ggplot(mov, aes(year, rating, colour = length, shape = mpaa)) +
  geom_point()
)

I can turn off the display of all the legends like this:

(p1 <- p0 + theme(legend.position = "none"))

Passing show_guide = FALSE to geom_point (as per this question) turns off the shape legend.

(p2 <- ggplot(mov, aes(year, rating, colour = length, shape = mpaa)) +
  geom_point(show_guide = FALSE)
)

But what if I want to turn off the colour legend instead? There doesn't seem to be a way of telling show_guide which legend to apply its behaviour to. And there is no show_guide argument for scales or aesthetics.

(p3 <- ggplot(mov, aes(year, rating, colour = length, shape = mpaa)) +
  scale_colour_discrete(show_guide = FALSE) +
  geom_point()
)
# Error in discrete_scale

(p4 <- ggplot(mov, aes(year, rating, shape = mpaa)) +
  aes(colour = length, show_guide = FALSE) +
  geom_point()
)
#draws both legends

This question suggests that the modern (since ggplot2 v0.9.2) way of controlling legends is with the guides function.

I want to be able to do something like

p0 + guides(
  colour = guide_legend(show = FALSE) 
)

but guide_legend doesn't have a show argument.

How do I specify which legends get displayed?

解决方案

You can use guide=FALSE in scale_..._...() to suppress legend.

For your example you should use scale_colour_continuous() because length is continuous variable (not discrete).

(p3 <- ggplot(mov, aes(year, rating, colour = length, shape = mpaa)) +
   scale_colour_continuous(guide = FALSE) +
   geom_point()
)

Or using function guides() you should set FALSE for that element/aesthetic that you don't want to appear as legend, for example, fill, shape, colour.

p0 <- ggplot(mov, aes(year, rating, colour = length, shape = mpaa)) +
  geom_point()    
p0+guides(colour=FALSE)

UPDATE

Both provided solutions work in new ggplot2 version 2.0.0 but movies dataset is no longer present in this library. Instead you have to use new package ggplot2movies to check those solutions.

library(ggplot2movies)
data(movies)
mov <- subset(movies, length != "")

这篇关于关闭ggplot中的一些传说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!

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