我该如何转换这个矩阵:
> matrix(1:3, nrow = 3, dimnames = list(c("X","Y","Z"), c("A")))
A
X 1
Y 2
Z 3
转化为这个数据框:
> tibble::tribble(~group1, ~group2, ~value, "X", "A", 1, "Y", "A", 2, "Z", "A", 3)
# A tibble: 3 × 3
group1 group2 value
<chr> <chr> <dbl>
1 X A 1
2 Y A 2
3 Z A 3
谢谢你