我正在同一个 ggplot 中绘制 geom_path 对象和 geom_text 对象,但遇到以下问题:
#load the data frames
df1 <- data.frame(x=c(32, 42, 52), y=c(15, 20, 25), grp=c(1, 2, 2), site=c("A", "B", "C"))
df1$grp = factor(df1$grp)
colnames(df1)[3] = "Group"
df2 <- data.frame(x=c(32, 42, 52), y=c(15, 20, 25))
#create basic plot with site name coloured by group
p = ggplot(df1, aes(x=x, y=y, label=site))
p = p + geom_text(aes(colour=factor(Group)), size=4)
p = p + coord_fixed()
#I try adding a path
p = p + geom_path(data=df2, aes(x=x, y=y))
但得到错误
eval(expr, envir, enclos) 中的错误:未找到对象“site”
有任何想法吗?