我尝试绘制的数据结构如下:
Year Country Count
1: 2010 St. Vincent and the Grenadines 0
2: 1970 Ukraine 0
3: 1980 Yemen 1
4: 1970 Romania 0
5: 1950 Cyprus 0
6: 1950 Netherlands 0
7: 1980 Mauritania 0
8: 1980 Niger 0
9: 2010 Grenada 2
10: 1970 Israel 6
11: 1990 Suriname 0
12: 1990 Singapore 1
13: 1960 Russia 0
14: 1970 Barbados 0
15: 1950 Panama 0
16: 2010 Mali 3
17: 1980 Greece 11
18: 2010 Venezuela 15
19: 2000 Malawi 9
20: 2000 Jamaica 34
21: 1970 Angola 0
22: 1990 Lebanon 0
23: 1980 Central African Republic 0
24: 1950 United Kingdom 1
25: 2010 Iceland 26
我用它创建了以下分组条形图:
我需要国家/地区标签与其相应的栏对齐。即使咨询后here和 here并按照链接中的建议使用position =position_dodge(width= 0.9)，标签似乎没有对齐。我还尝试了不同的宽度值。
以下是创建上述绘图的代码:
> p<-ggplot(x[which(x$Count>0)], aes(Year, Count, label=Country)) + geom_bar(aes(fill = Country), position = "dodge", stat="identity")
> p+ theme(legend.position="none")+scale_x_discrete(limits=unique(x$Year))+geom_text(position = position_dodge(width= 0.9), aes(y=Count+10), angle=90)
最佳答案
将 fill = Country 添加到 geom_text 并明确指定躲避宽度以确保条形图和标签对齐:
library(data.table)
library(ggplot2)
# Fictional sample data
x <- data.table(Year = c(2010,1970,1980,1970,1950,1950,1980,1980,2010),
Country = c("St. Vincent and the Grenadines", "Ukraine", "Yemen", "Romania", "Cyprus", "Netherlands",
"Mauritania", "Niger", "Grenada"), Count = c(5,2,1,4,7,6,4,1,2))
p <- ggplot(x[which(x$Count>0)], aes(Year, Count)) + geom_bar(aes(fill = Country), position = position_dodge(9), stat="identity")
p + theme(legend.position="none") + scale_x_discrete(limits=unique(x$Year)) + geom_text(position = position_dodge(width= 9), aes(y=Count+0.25, fill=Country, label=Country, hjust=0), angle=90)
(注:我还用hjust调整了位置)
关于r - 分组条形图中的 ggplot 标签条，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37587288/