weibo_青柠不加冰_0
2016-04-15 11:17
> f <- factor(f,labels = "Group1","Group2")> xyplot(y~x | f,layout=c(2,1))Error in limits.and.aspect(default.prepanel, prepanel = prepanel, have.xlim = have.xlim, : need at least one panel
为什么会报错?我和老师做的一样
多个变量要用c()函数括起来
f <- factor(f, labels = c("Group1", "Group2"))
R语言之数据可视化
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