How to insert an element into matrix?

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George Ansari
George Ansari 2017 年 8 月 22 日
コメント済み: Image Analyst 2020 年 10 月 14 日
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.

回答 (2 件)

Image Analyst
Image Analyst 2017 年 8 月 22 日
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, :)]
  4 件のコメント
Image Analyst
Image Analyst 2020 年 10 月 14 日
What is "the first one"? Please explain. Why do you want loops?

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José-Luis
José-Luis 2017 年 8 月 22 日
編集済み: José-Luis 2017 年 8 月 22 日
result = [A;B]
Or use cat()

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