R语言为数据框添加列名或行名

1.添加列名

wts=c(1,1,1)

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

2.为矩阵添加列名和行名

wts=matrix(0,3,4)

row=c("row1","row2","row3")

column=c("setosa","versicolor","virginica")

dimnames(wts)=list(row,column)