如何自动构建一个矩阵,将 vector <- c(1,2,3)
的排列转换成一种二进制格式?就像这样:
x <- matrix(c(1,1,0,0,0,1,0,1,1,0,1,1,0,0,0,1,1,1), ncol = 3)
rownames(x) <- c("1", "1,2", "2", "3", "2,3", "1,2,3")
colnames(x) <- c("1", "2", "3")
x
1 2 3
1 1 0 0
1,2 1 1 0
2 0 1 0
3 0 0 1
2,3 0 1 1
1,2,3 1 1 1
虽然我想拥有的不是3个值,而是7个值。