MATLAB Answers

finding the sparsity pattern of a matrix

1 ビュー (過去 30 日間)
Deepa Maheshvare
Deepa Maheshvare 2021 年 2 月 13 日
I've a matrix created via symbolic multiplication
I'm sharing an example of the resulting matrix below (which is the RHS of ode dy/dt = F)
F =
[ f1*(k + c), f2, 0]
[ f1, f2, f3]
[ 0, f2, f3*(k)]
[ f1, 0, f3]
Differentiating F gives the jacobian.
In my real system, F is a banded matrix. I want to find sparsity pattern of the matrix(like the following) and supply for `JPattern` in `odeset`.
non_zero_F =
[1, 1, 0]
[1, 1, 1]
[0, 1, 1]
[1, 0, 1]
  1 件のコメント
Alamanda Ponappa Poovaya
Alamanda Ponappa Poovaya 2021 年 3 月 25 日
From my understanting, sparsity pattern of a matrix is a graphical representation which you can get using spy(s). Could you give more information on how you want to use this sparsity pattern?


回答 (0 件)




Community Treasure Hunt

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

Start Hunting!

Translated by