1.添加列名
wts=c(1,1,1)

names(wts)=c("setosa","versicolor","virginica")

2.為矩陣添加列名和行名
wts=matrix(0,3,4)

row=c("row1","row2","row3")
column=c("setosa","versicolor","virginica")
dimnames(wts)=list(row,column)

1.添加列名
wts=c(1,1,1)

names(wts)=c("setosa","versicolor","virginica")

2.為矩陣添加列名和行名
wts=matrix(0,3,4)

row=c("row1","row2","row3")
column=c("setosa","versicolor","virginica")
dimnames(wts)=list(row,column)

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