How to insert an element into matrix?

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George Ansari 2017-8-22

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https://ww2.mathworks.cn/matlabcentral/answers/353679-how-to-insert-an-element-into-matrix

评论： Image Analyst 2020-10-14

Suppose I have a matrix A = ones(4,6). I want to combine it with a vector B = zeros(1,6) to make another matrix C of size 5 by 6, where the first four rows would be ones and fifth would be zero.

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回答（2 个）

Image Analyst 2017-8-22

2
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https://ww2.mathworks.cn/matlabcentral/answers/353679-how-to-insert-an-element-into-matrix#answer_278893

在 MATLAB Online 中打开

Here's code to do both inserting (like your subject line) and appending (like your message body):

A = ones(4,6)
B = zeros(1,6)
% To append / concatenate:
C = [A; B]
% To insert into a specified row number:
rowToInsert = 3 % Whatever you want.
C = [A(1:rowToInsert-1, :); B; A(rowToInsert:end, :)]