Creating Matrix Using Existing Matrix

10 次查看（过去 30 天）
Julian
Julian 2015-10-6
回答： Julian 2015-10-6
Hi, How do you create a matrix (not just a plot) that is a horizontal shear of a 2x2 identity matrix? For example, how do you create A=[1 2 ; 0 1] (identity horizontally sheared by 2)? Inputting the entries directly (A=[1 2 ; 0 1]) is not an answer that I'm looking for.
Thank you.

请先登录，再回答此问题。

采纳的回答

Walter Roberson
Walter Roberson 2015-10-6
SheerFactor = 2;
sheermat = eye(2);
sheermat(1,2) = SheerFactor;

更多回答（2 个）

Andrei Bobrov
Andrei Bobrov 2015-10-6
n - size matrix
full(spdiags(ones(n,1)*(0:2*n-1),1-n:n-1,n,n))
or
rot90(hankel(0:n-1,n-1:2*n-2))
Julian
Julian 2015-10-6
Thank you all!

类别

在 Help Center 和 File Exchange 中查找有关 Creating and Concatenating 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