我知道已经提出过这类问题,但我已经尝试将其应用到我的数据集中数小时,但没有成功。
这是我的数据框
> df
prot X nr
1 unmodified same 68
2 1 Ac same 14
3 2 Ac same 7
4 3 Ac same 4
5 4 Ac same 3
6 5 Ac same 2
7 6 Ac same 1
8 7 Ac same 2
我尝试了两种调整组顺序的方法,但在这两种情况下,图例的顺序完全相反。如何将图中组的顺序与图例中的组相匹配? WAY1:
y <- read.csv("df.csv",sep=",") #sep=";"
df <- data.frame(y)
df$prot <- factor(df$prot, levels = rev(df$prot)) #order groups
p<-ggplot(df, aes(x=X, y=nr, fill=prot)) +
geom_bar(stat="identity", position=position_stack(), width=0.2, colour="gray", aes(fill = prot))+ # stacked, bar-width, outline-colour = colour
theme(panel.background = element_rect(fill = "ivory" , colour="ivory"))+
coord_flip()+
theme(legend.position="bottom") +
guides(fill = guide_legend(nrow = 1)) +
geom_text(aes(label=nr), color="black",vjust = -3, position = position_stack()) # add labels (%) non-overlapping
p
给我这个结果:
way2:
y <- read.csv("df.csv",sep=",") #sep=";"
df <- data.frame(y)
df$prot <- factor(df$prot, levels = c("7 Ac", "6 Ac", "5 Ac", "4 Ac", "3 Ac", "2 Ac", "1 Ac","unmodified")) #order groups
df <- ddply(df, .(X),
transform, pos = cumsum(nr) - (0.5 * nr)) #adjust the position of the data labels:create new variable at the centre of each bar
p<-ggplot(data=df, aes(x=X, y=nr, fill=prot)) +
geom_bar(stat="identity", position=position_stack(), width=0.2, colour="gray")+ # stacked, bar-width, outline-colour = colour
theme(panel.background = element_rect(fill = "ivory" , colour="ivory"))+ #backgroundcolor
coord_flip()+
theme(legend.position="bottom") +
guides(fill = guide_legend(nrow = 1)) +
geom_text(data=df, aes(x = X, y = pos, label = paste0(nr,"%")),
size=4)
p
p
给我这个结果:
答案 0 :(得分:0)
您只需使用reverse
中的guide_legend
参数并将其设置为TRUE
,例如:
df<- data.frame(prot = c("unmodified", paste(1:7, "AC")), X = rep("same", 8),
nr = c(68,14,7,4,3,2,1,2))
library(ggplot2)
df$prot <- factor(df$prot, levels = rev(df$prot)) #order groups
p<-ggplot(df, aes(x=X, y=nr, fill=prot)) +
geom_bar(stat="identity", position=position_stack(), width=0.2, colour="gray", aes(fill = prot))+ # stacked, bar-width, outline-colour = colour
theme(panel.background = element_rect(fill = "ivory" , colour="ivory"))+
coord_flip()+
theme(legend.position="bottom") +
# to change ordering of legend, set reverse = TRUE
guides(fill = guide_legend(nrow = 1, reverse = TRUE)) +
geom_text(aes(label=nr), color="black",vjust = -3, position = position_stack()) # add labels (%) non-overlapping
p