在ggplot2中添加图例标题和主标题 [英] Adding legend title and main title in ggplot2

问题描述

您好我正在尝试使用ggplot2来完成以下操作：
$ b $ 1将图例名称更改为asset
2）将标题添加到顶部
3）将每个面板的边框更改为更坚实的黑线
4）希望更改每个面板图标题corp等的名称和颜色

这是我的，我不知道如何做到这一点任何帮助，非常感激

  p_ggplot（mystratcodes，aes（x = annRisk，y = annRet））
 p <-p + facet_grid（._ sector）+ facet_wrap（〜sector）
 p <-p + geom_point （大小= 6，aes（color =（mystratcodes $ subsector1）））
 p <-p + scale_x_continuous（labels = percent，name =Annualized Risk）
 p <-p + scale_y_continuous =％，name =Annualized Return）$​​ b $ b p <-p + theme（legend.position =bottom，legend.key = element_rect（color =gray））
 p <-p + scale_colour_manual（values = c（UTIL=＃fdcc8a，IND=＃fc8d59，FIN=＃d7301f，ABS=＃74a9cf，CMBS =＃0570b0，LA=＃8c96c6，SOV=＃88419d，SUPRA=＃b3cde3））
 print（p）
  
 
非常感谢 
 
解决方案
 1 ）您可以将<资产>作为第一个参数放入 scale_color_manual 函数中，将图例名称更改为资产。
  scale_colour_manual（Asset，values = ...）
  
 
 
 2）您可以做
 
 pre $ lt; code> p <-p + labs（title =PUT TITLE HERE）
  

为标题

<3>您可以添加$ theme（）来改变背景颜色（这会在框的周围出现一个边框）。 $ p> p <-p + theme（panel.background = element_rect（fill = NA，col =black））


来源：如何在多面网格线之间进行分割

您也可以尝试在表达式的前面添加 p = p + theme_bw（），但那可能会改变太多的东西。

4）对于网格标签，您有2个选项（以及更多，但这些是最简单的）。首先，您可以重命名数据的级别。如果你不想这样做，你可以在 facet_grid（）中创建一个标签程序函数作为参数。看到这里的例子：

https://stackoverflow.com/a/ 12104207/1362215

对于面板的颜色，您还可以使用 theme（）

  p <-p +主题（strip.background = element_rect（fill ='purple'））＃将方块变成紫色
  

Hi I am trying to use ggplot2 to do the following

1) Change the legend name to "asset" 2) Add a title to the top 3) Change the border of each panel to a more solid dark line 4) Would like to change the name and color of each panel chart title "corp" etc

This is what I have and I am not sure how to do this Any help is greatly appreciated

p <- ggplot(mystratcodes, aes(x=annRisk, y = annRet))
p<- p + facet_grid(. ~ sector) + facet_wrap(~sector)
p<- p + geom_point(size=6, aes(color = (mystratcodes$subsector1))) 
p<-p+scale_x_continuous(labels = percent, name = "Annualized Risk")
p<-p+scale_y_continuous(labels = percent, name = "Annualized Return")
p<-p+ theme( legend.position = "bottom", legend.key = element_rect(colour = "grey"))
p<-p + scale_colour_manual(values = c("UTIL" = "#fdcc8a", "IND" = "#fc8d59", "FIN" =          "#d7301f","ABS" = "#74a9cf", "CMBS" = "#0570b0", "LA" = "#8c96c6", "SOV"= "#88419d", "SUPRA" = "#b3cde3"))
print(p)

Thanks so much

解决方案

1) You can change the legend name to "Asset" by putting "Asset" as the first parameter in the scale_color_manual function.

scale_colour_manual("Asset",values = ...)

2) You can do

p<-p+labs(title="PUT TITLE HERE")

for the title

3) You can add an additional argument to theme() to change the background color (which will make a border appear around the box)

p<-p+theme(panel.background = element_rect(fill=NA, col="black"))

source: How to place divisions between facet grid lines

You could also try adding p=p+theme_bw() earlier in the expression, but that might change too many things.

4) For the grid labels, you have 2 options (well, more, but these are the easiest). Firstly, you can rename the levels of your data. If you don't want to do that, you can make a labeller function to pass as an argument in facet_grid(). See the example here:

https://stackoverflow.com/a/12104207/1362215

For the color of the panel, you can also use theme() for that

p<-p+theme(strip.background = element_rect(fill = 'purple'))#turns boxes purple

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