Same number of Rows and Cols of a matrix (N*N)

1 次查看（过去 30 天）
David Hastana
David Hastana 2020-2-21
评论： Rik 2020-2-21
Hello,
I would like to make a program that requires a matrix A to be square (n*n)
for exmple :
[a,b]=size(A)
if a ~= b
input('Error')
end
Is there a matlab function for this ? without using [a,b]=size(A) ?
Thank you in advance
  1 个评论
Rik
Rik 2020-2-21
Backup of question:
Title:
Same number of Rows and Cols of a matrix (N*N)
Body:
Hello,
I would like to make a program that requires a matrix A to be square (n*n)
for exmple :
[a,b]=size(A)
if a ~= b
input('Error')
end
Is there a matlab function for this ? without using [a,b]=size(A) ?
Thank you in advance

请先登录，再进行评论。

请先登录，再回答此问题。

回答（2 个）

Stephen23
Stephen23 2020-2-21
编辑：Stephen23 2020-2-21
This will return false for non-square matrices, and also if ndims>2:
isequal(0,diff(size(M)))
It is easy to use with assert:
assert(isequal(0,diff(size(M))),'Input must be a square matrix')
Matt J
Matt J 2020-2-21
validateattributes(A,"numeric",{"square"})

类别

在 Help Center 和 File Exchange 中查找有关 Matrix Indexing 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