将矩阵转换为一维数组 [英] Convert a matrix to a 1 dimensional array

问题描述

我有一个矩阵(32X48).

I have a matrix (32X48).

如何将矩阵转换为一维数组?

How can I convert the matrix into a single dimensional array?

推荐答案

要么用 'scan' 读入，要么在矩阵上执行 as.vector().如果需要按行或列转置矩阵，则可能需要先转置矩阵.

Either read it in with 'scan', or just do as.vector() on the matrix. You might want to transpose the matrix first if you want it by rows or columns.

> m=matrix(1:12,3,4)
> m
     [,1] [,2] [,3] [,4]
[1,]    1    4    7   10
[2,]    2    5    8   11
[3,]    3    6    9   12
> as.vector(m)
 [1]  1  2  3  4  5  6  7  8  9 10 11 12
> as.vector(t(m))
 [1]  1  4  7 10  2  5  8 11  3  6  9 12

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