Why the covariance matrix is not stored using the n4sid function?

1 次查看（过去 30 天）
Francesco
Francesco 2014-3-27
I am performing subspace system identification using the function n4sid which returns a idss model. How ever I always get the following warning, no matter the order of the model I use:
Warning: Covariance matrix estimate unreliable. Not stored.
Now I need the covariance matrix of the model because next I have to use the merge function. Can anybody explain why?
Thanks a lot.

请先登录，再回答此问题。

回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Linear Model Identification 的更多信息

标签

产品

Community Treasure Hunt

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

Start Hunting!

Translated by