Info

此问题已关闭。 请重新打开它进行编辑或回答。

Error when I try to use Code Analyzer suggestions

1 次查看（过去 30 天）
Andrew Farsech
Andrew Farsech 2015-12-12
关闭： MATLAB Answer Bot 2021-8-20
I get the following warning: INV is slow and inaccurate. Use A\b for INV(A)*b , and b/A for b*INV(A)
the warning happens at at these 3 lines
a = a1 + p1*Z'*inv(f1)*(vt);
p = p1 - p1*Z'*inv(f)*Z*p1;
s(t,:) = v'*inv(f)*v;
I have tried to follow the suggestion without success. Probably I haven't understand the right equivalent syntax.
How I should write these code lines?
  2 个评论
jgg
jgg 2015-12-12
It's just a warning; you don't have to fix it. The inv function, as it suggests, is slow and inaccurate. I think if I understand your code properly, the corrected version would be:
a = a1 + ((p1*Z')/f1)*(vt);
p = p1 - ((p1*Z')/f)*Z*p1;
s(t,:) = (v'/f)*v;
If you're getting an error, check the dimensions of the matrices to make sure they align.
Andrew Farsech
Andrew Farsech 2015-12-13
thanks, I know that it's only a warning not an error, the error happened in calculation because I have made a mistake in the attempt to follow the hint.

此问题已关闭。

回答（0 个）

此问题已关闭。

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