[英]How to change legend values on ggplot pie chart?
我在 R 中构建了这个特定的表,以使用 ggplot package 构建饼图。
column,value,proportion,ypos,end,start,middle,hjust,vjust,legend
Urban,268053,97.78067170794165,48.890335853970825,6.143740798014896,0,3.071870399007448,0,1,Urban - 97.78 %
Rural,1296,0.4727563225686427,98.01704986922597,6.173444953813291,6.143740798014896,6.158592875914094,1,0,Rural - 0.47 %
Suburban,4788,1.746571969489708,99.12671401525515,6.283185307179586,6.173444953813291,6.228315130496439,1,0,Suburban - 1.75 %
但是,我希望图例列中的所有值而不是列列都打印在图例中,因为如果我决定在饼图中对它们进行 label,则图例变量太拥挤了。 我也想更改图例标题。
下面是我用来构建这个图表的代码。
library(ggplot2)
library(readr)
library(readxl)
demographics <- read_csv("C:\\path to file\\demographics.csv")
ggplot(demographics) +
geom_arc_bar(aes(x0 = 0, y0 = 0, r0 = 0, r = 1,
start = start, end = end, fill = column)) +
coord_fixed() +
scale_x_continuous(limits = c(-1.5, 1.4), # Adjust so labels are not cut off
name = "", breaks = NULL, labels = NULL) +
scale_y_continuous(limits = c(-1, 1), # Adjust so labels are not cut off
name = "", breaks = NULL, labels = NULL) +
scale_color_manual(name = "Community Type", labels = c(legend)) +
ggtitle("Percentage of Population by Type of Community")
有人可以帮助我吗? 提前致谢。
尝试这个:
library(ggplot2)
library(readr)
library(readxl)
library(ggforce)
ggplot(demographics) +
geom_arc_bar(aes(x0 = 0, y0 = 0, r0 = 0, r = 1,
start = start, end = end, fill = legend)) +
coord_fixed() +
scale_x_continuous(limits = c(-1.5, 1.4), # Adjust so labels are not cut off
name = "", breaks = NULL, labels = NULL) +
scale_y_continuous(limits = c(-1, 1), # Adjust so labels are not cut off
name = "", breaks = NULL, labels = NULL) +
scale_color_manual(name = "Community Type", labels = c(legend)) +
ggtitle("Percentage of Population by Type of Community")+
guides(fill=guide_legend(title="New Legend Title"))
Output:
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