names
names(X2) <- C("A","B","C","D") ? 返回的是 names(X2) <- C("A","B","C","D") Error in C("A", "B", "C", "D") : 不能把對(duì)象解釋成因子 為什么啊
慕移動(dòng)9342110
2016-07-30
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2016-07-30
X2=1:4
names(X2) <- c("A","B","C","D")
X2
我的可以啊，你是不是把c寫(xiě)成了大寫(xiě) ????