复制矩阵的行或列，并将其插入下一行/列 [英] Copy a row or column of a matrix and insert it in the next row/column

问题描述

我想知道如果在MATLAB中有一个简单的方法来执行以下操作：我想复制一个行或列的矩阵，并将其插入下一行/列。

I was wondering if there is an easy way in MATLAB to do the following operation: I'd like to copy a row or column of a matrix and insert it in the next row/column.

例如：给定一个3x3矩阵

For example: given a 3x3 matrix

1 2 3
4 5 6
7 8 9

并将其插入第二行：

1 2 3
1 2 3
4 5 6
7 8 9

有人可以告诉我如何在MATLAB中完成这个任务吗？

Can someone advise how I could accomplish this in MATLAB? Thanks!

推荐答案

您可以简单地重复要重复的行的索引

You can simply repeat the indices of the rows you'd like to repeat

A = A([1 1 2 3],:)

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