在进行ggplot绘图的过程中，出现了“Error: stat_bin() must not be used with a y aesthetic.”的报错。
代码具体如下：
> ggplot(aes(x = gender, y = age),
+ data = subset(pf, !is.na(gender))) + geom_histogram()
Error: stat_bin() must not be used with a y aesthetic.
> ggplot(aes(x = age, y = friend_count),
+ data = subset(pf, !is.na(gender))) + geom_histogram()+
+ facet_wrap(~gender,ncol = 1)
Error: stat_bin() must not be used with a y aesthetic.stat_bin表明统计变换是计数，计数会被投射到y轴，与y=1冲突了， 所以才出现stat_bin() must not be used with a y aesthetic.
这里主要是因为直方图是单因素变量的可视化方法，aes包裹中不能添加y轴。正确的代码可更换为一下：
ggplot(aes(x = friend_count),
data = subset(pf, !is.na(gender))) + geom_histogram()
ggplot(aes(x = friend_count),
data = subset(pf, !is.na(gender))) + geom_histogram()+
facet_wrap(~gender,ncol = 1)版权声明：本文为weixin_41100555原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接和本声明。