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Math Forum » Discussions » Software » comp.soft-sys.matlab

Topic: Alternative solution for NAN
Replies: 11   Last Post: Feb 27, 2013 5:44 PM

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Torsten

Posts: 1,344
Registered: 11/8/10
Re: Alternative solution for NAN
Posted: Feb 27, 2013 4:58 AM
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"Carl S." wrote in message <kgki2g$rie$1@newscl01ah.mathworks.com>...
> The following code gives NAN (Not a Number) values
> [U,D]=eig(N);
>
> To solve this problem, I wrote that
> while(det(N) == 0)
> N=(1e-10.*randi(1,size(N)))*eye(size(N));
> end
>
> But, the loop does not stop

Your matrix N within the loop always has determinant (1e-10)^(size(N))
which may become very small if N is large.

:( Are there any alternative solution instead of this loop to solve the NAN problem ?

Depends on the original matrix N.

Best wishes
Torsten.

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