图例不显示ggplot2密度图中的线型 [英] Legend does not show line type in ggplot2 density plot

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问题描述

我用一个有3个变量的数据框用ggplot创建了一个密度图。一条密度线是虚线,但图例显示了这条线的实线。



数据如下所示:

 > (df)
R1 R2 R3
1 0.085383867 0.04366546 0.055320885
2 0.059148932 0.03477045 0.040804048
3 -0.181279986 -0.10189900 -0.097218145
4 0.002307494 -0.01137235 -0.003585813
5 -0.047816198 -0.04932982 -0.009389939
6 0.030535090 0.02544292 0.017650949

情节是:

  ggplot(data = df)+ 
stat_density(aes(x = R1,color =rho = -0.6),adjust = 4,lwd = 0.5,geom =line,position =identity)+
stat_density(aes(x = R2,color =rho = 0,6 ),调整= 4,lwd = 0.5,geom =line,position =identity)+
stat_density(aes(x = R3,color =rho = 0),linetype = 2,adjust = 4,lwd = 0.5,geom =line,position =identity)+
xlim(-0.5,0.5)+
xlab(Renditen)+
ylab(Dichte )+
ggtitle(Renditeverteilung im Heston-Modell)+
主题(plot.title = element_text(face =bold,size = 16,vjust = 2),axis.title.x = element_text(vjust = -1,size = 12),
legend.textle = element_text(size = 12),legend.margin = unit(1.5,cm ),
legend.key.height = unit(1.2,line),legend.key.size = unit(0.4,cm),legend.key = element_rect(fill = NA),legend。 background = element_rect(color =darkgrey),
plot.margin =单位(c(1,1,1,1),cm))+
scale_colour_manual(values = c(rho = -0,6=红色,rho = 0,6=蓝色,rho = 0=黑色),名称=Korrelation)



最后是情节:



我怎样才能让图例显示第三条密度线的虚线(变量R3)?

提前谢谢!

解决方案

> linetype = 放置在 aes()中为每个 stat_density() colors = 和th相同使用 scale_linetype_manual()来根据需要设置类型。如果您对线型和颜色使用相同的图例名称,则两个图例都将放在一起。

  ggplot(data = df)+ 
stat_density(aes(x = R1,color =rho = -0,6,linetype =rho = -0,6),
adjust = 4,lwd = 0.5,geom = (x = R2,color =rho = 0,6,linetype =rho = 0,6),
adjust = 4 ,lwd = 0.5,geom =line,position =identity)+
stat_density(aes(x = R3,color =rho = 0,linetype =rho = 0),
调整= 4,lwd = 0.5,geom =line,position =identity)+
xlim(-0.5,0.5)+
xlab(Renditen)+
ylab (Dichte)+
ggtitle(Renditeverteilung im Heston-Modell)+
主题(plot.title = element_text(face =bold,size = 16,vjust = 2),
axis.title.x = element_text(vjust = -1,size = 12),
axis.title.y = element_text(vjust = -0.25,size = 12),
legend.text = element_text(size = 12),legend.title = element_text(size = 12),
legend.margin =单位(1.5,cm),
legend.key.height =单位(1.2,line),
legend.key.size =单位(0.4,cm ),
legend.key = element_rect(fill = NA),
legend.background = element_rect(color =darkgrey),
plot.margin = unit(c(1,1 ,cm))+
scale_colour_manual(values = c(rho = -0,6=red,rho = 0,6=blue,
=rho = 0=black),name =Korrelation)+
scale_linetype_manual(values = c(rho = -0.6= 1,rho = 0,6= 1,
rho = 0= 2),name =Korrelation)


I created a density plot with ggplot from a dataframe with 3 variables. One density line is dotted, but the legend shows a solid line for this line.

The data looks like this:

> head(df)
            R1          R2           R3
1  0.085383867  0.04366546  0.055320885
2  0.059148932  0.03477045  0.040804048
3 -0.181279986 -0.10189900 -0.097218145
4  0.002307494 -0.01137235 -0.003585813
5 -0.047816198 -0.04932982 -0.009389939
6  0.030535090  0.02544292  0.017650949

The code for the plot is:

ggplot(data=df)+
  stat_density(aes(x=R1, colour="rho = -0,6"), adjust=4, lwd=0.5, geom="line", position="identity")+
  stat_density(aes(x=R2, colour="rho = 0,6"), adjust=4, lwd=0.5, geom="line", position="identity")+
  stat_density(aes(x=R3, colour="rho = 0"), linetype=2, adjust=4, lwd=0.5, geom="line", position="identity")+
  xlim(-0.5, 0.5)+
  xlab("Renditen")+
  ylab("Dichte")+
  ggtitle("Renditeverteilung im Heston-Modell")+
  theme(plot.title=element_text(face="bold", size=16, vjust=2), axis.title.x=element_text(vjust=-1, size=12), 
          axis.title.y=element_text(vjust=-0.25, size=12), legend.text=element_text(size=12), legend.title=element_text(size=12), legend.margin=unit(1.5, "cm"),
          legend.key.height=unit(1.2, "line"), legend.key.size=unit(0.4, "cm"), legend.key=element_rect(fill=NA), legend.background=element_rect(colour="darkgrey"),
          plot.margin=unit(c(1,1,1,1), "cm"))+
  scale_colour_manual(values=c("rho = -0,6"="red", "rho = 0,6"="blue", "rho = 0"="black"), name="Korrelation")

And finally the plot:

How can I get the legend to show a dotted line for the third density line (variable R3)?

Thank you in advance!

解决方案

Put linetype= inside aes() for each stat_density() with the same names as for colors= and then use scale_linetype_manual() to set types as you need. If you use the same legend name for linetypes and colors, both legend will be put together.

ggplot(data=df)+
  stat_density(aes(x=R1, colour="rho = -0,6",linetype="rho = -0,6"), 
                     adjust=4, lwd=0.5, geom="line", position="identity")+
  stat_density(aes(x=R2, colour="rho = 0,6",linetype="rho = 0,6"), 
                     adjust=4, lwd=0.5, geom="line", position="identity")+
  stat_density(aes(x=R3, colour="rho = 0", linetype="rho = 0"), 
                     adjust=4, lwd=0.5, geom="line", position="identity")+
  xlim(-0.5, 0.5)+
  xlab("Renditen")+
  ylab("Dichte")+
  ggtitle("Renditeverteilung im Heston-Modell")+
  theme(plot.title=element_text(face="bold", size=16, vjust=2),  
        axis.title.x=element_text(vjust=-1, size=12), 
        axis.title.y=element_text(vjust=-0.25, size=12), 
        legend.text=element_text(size=12), legend.title=element_text(size=12),
        legend.margin=unit(1.5, "cm"),
        legend.key.height=unit(1.2, "line"), 
        legend.key.size=unit(0.4, "cm"), 
        legend.key=element_rect(fill=NA), 
        legend.background=element_rect(colour="darkgrey"),
        plot.margin=unit(c(1,1,1,1), "cm"))+
  scale_colour_manual(values=c("rho = -0,6"="red", "rho = 0,6"="blue", 
                                "rho = 0"="black"), name="Korrelation")+
  scale_linetype_manual(values=c("rho = -0,6"=1, "rho = 0,6"=1, 
                                "rho = 0"=2), name="Korrelation")

这篇关于图例不显示ggplot2密度图中的线型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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