在R中为哑铃图添加图例 [英] Adding a legend to a dumbbell chart in R
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问题描述
f < - ggplot(Brewers_PA,aes(x = PA.2015,xend = PA.2016,y = Name) )
f + geom_dumbbell(color =darkblue,point.colour.l =darkred,point.colour.r =darkBlue,point.size.l = 2.5,point.size.r = 2.5) +
theme(plot.background = element_rect(fill =grey93,color =grey93))+
theme(plot.title = element_text(size = 11,face =bold,hjust = 0))+
theme(axis.text.x = element_text(size = 8))+
theme(axis.text.y = element_text(size = 8))+
theme (axis.title.x = element_text(size = 9))+
theme(axis.title.y = element_text(size = 9))+ ylab()+ xlab(Plate Appearance)+
ggtitle(2015-2016板块外观变化)
我能够做到这要感谢这个教程。
using the following code, I created a dumbbell chart.
f <- ggplot(Brewers_PA, aes(x=PA.2015, xend=PA.2016, y=Name))
f + geom_dumbbell(colour = "darkblue", point.colour.l = "darkred", point.colour.r = "darkBlue", point.size.l = 2.5, point.size.r = 2.5) +
theme(plot.background=element_rect(fill = "grey93", colour = "grey93")) +
theme(plot.title=element_text(size = 11, face = "bold", hjust = 0)) +
theme(axis.text.x=element_text(size = 8)) +
theme(axis.text.y=element_text(size = 8)) +
theme(axis.title.x=element_text(size = 9)) +
theme(axis.title.y=element_text(size=9)) + ylab("") + xlab("Plate Appearance") +
ggtitle("Brewers Change in Plate Appearance 2015-2016")
I was able to do this thanks to this tutorial. https://www.r-bloggers.com/beating-lollipops-into-dumbbells/
The only problem is that I would like to add a legend to this but I am not sure how. Does anybody know? All help is appreciated.
I would basically like the legend to show the years to the colours. So, "darkblue" = 2016 (PA.2016), "darkred" = 2015 (PA.2015). I wanted to add a picture but for some reason it won't work.
Here is the data frame I created:
Name PA.2015 PA.2016
1 Jonathan Villar 128 679
2 Chris Carter 460 644
3 Ryan Braun 568 564
4 Scooter Gennett 391 542
5 Hernan Perez 272 430
6 Kirk Nieuwenhuis 141 392
7 Jonathan Lucroy 415 544
8 Aaron Hill 353 429
9 Ramon Flores 289 289
10 Domingo Santana 187 281
11 Martin Maldonado 256 253
12 Keon Broxton 2 244
13 Orlando Arcia 0 216
解决方案
Pkg author, here.
I'd suggest not adding extra interpretation cycles for the reader and make it an in-chart "legend", plus removing some "chart junk" aesthetics:
library(ggplot2)
library(ggalt)
read.table(text='Name PA.2015 PA.2016
"Jonathan Villar" 128 679
"Chris Carter" 460 644
"Ryan Braun" 568 564
"Scooter Gennett" 391 542
"Hernan Perez" 272 430
"Kirk Nieuwenhuis" 141 392
"Jonathan Lucroy" 415 544
"Aaron Hill" 353 429
"Ramon Flores" 289 289
"Domingo Santana" 187 281
"Martin Maldonado" 256 253
"Keon Broxton" 2 244
"Orlando Arcia" 0 216', header=TRUE, quote='"') -> Brewers_PA
f <- ggplot()
f <- f + geom_dumbbell(data=Brewers_PA,
aes(x=PA.2015, xend=PA.2016, y=Name),
colour = "darkblue",
point.colour.l = "darkred", point.colour.r = "darkBlue",
point.size.l = 2.5, point.size.r = 2.5)
f <- f + geom_text(data=data.frame(),
aes(x=391, y= "Scooter Gennett", label="2015"),
color="darkred", hjust=1, size=3, nudge_x=-10)
f <- f + geom_text(data=data.frame(),
aes(x=542, y= "Scooter Gennett", label="2016"),
color="darkBlue", hjust=0, size=3, nudge_x=10)
f <- f + scale_x_continuous(expand=c(0,10))
f <- f + labs(x=NULL, y=NULL,
title="Brewers Change in Plate Appearance 2015-2016")
f <- f + theme(plot.background=element_rect(fill = "grey93", colour = "grey93"))
f <- f + theme(plot.title=element_text(size = 11, face = "bold", hjust = 0))
f <- f + theme(axis.text.x=element_text(size = 8))
f <- f + theme(axis.text.y=element_text(size = 8))
f <- f + theme(axis.title.x=element_text(size = 9))
f <- f + theme(axis.title.y=element_text(size=9))
f <- f + theme(axis.ticks=element_blank())
f <- f + theme(panel.grid.major.y=element_blank())
f <- f + theme(plot.margin=margin(30,30,30,30))
f
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