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R语言中返回矩阵元素的索引
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x <- matrix(1:6,ncol = 2)
x
which(x == 6)
##[1] 6
which(x == 6,arr.ind = T)
## row col
##[1,] 3 2
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||
x <- matrix(1:6,ncol = 2)
x
which(x == 6)
##[1] 6
which(x == 6,arr.ind = T)
## row col
##[1,] 3 2
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