清空筛选条件
清空筛选条件

Creating a diagonal matrix

2 次查看（过去 30 天）
Gratitude Kim
Gratitude Kim 2017-8-1
回答： Andrei Bobrov 2017-8-5
Hi, I have written such codes.
Col=4;
Row=3
A1=zeros(Row,Col);
n = size(A1,1);
A1([1:n+1:end,n+1:n+1:end]) = 1
Output:
A1 =
1 1 0 0
0 1 1 0
0 0 1 1
I obtained output A1. Appreciate if you are able to help me to modify the code so it can become [1 1 1 0; 0 1 1 1]. Appreciate your kind assistance.
  1 个评论
Guillaume
Guillaume 2017-8-1
It's unclear what you're asking. Wouldn't
A1 = [1 1 1 0; 0 1 1 1]
answer your question?
Note that your code makes a 3x4 matrix whereas you're now asking for a 2x4 matrix.

请先登录，再进行评论。

请先登录，再回答此问题。

回答（2 个）

KSSV
KSSV 2017-8-1
A1(3:end,:) = []
Andrei Bobrov
Andrei Bobrov 2017-8-5
t = true(2,4);
out = tril(t,2) & triu(t);

类别

在 Help Center 和 File Exchange 中查找有关 Operating on Diagonal Matrices 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by