Thread Subject: NaN's Diagonal Matix?

Anyone know if theres a computationally efficient way to fill
the diagonal of a square matrix with NaN's
WITHOUT using loops?

(I tried "diag" & "eye" functions but haven't had any luck)


Jeremy

"jeremy " <orestes05@hotmail.com> wrote in message
<fnef9d$eo6$1@fred.mathworks.com>...
> Anyone know if theres a computationally efficient way to fill
> the diagonal of a square matrix with NaN's
> WITHOUT using loops?
>
> (I tried "diag" & "eye" functions but haven't had any luck)
>
>
> Jeremy

a(1:size(a,1)+1:end) = nan;

Anh Huy Phan
RIKEN - BSI

Try the following.
>>x(1:size(x)+1:end)=NaN

"Anh Huy Phan" <phananhhuy@mathworks.com> wrote in message
<fneget$r7d$1@fred.mathworks.com>...
> "jeremy " <orestes05@hotmail.com> wrote in message
> <fnef9d$eo6$1@fred.mathworks.com>...
> > Anyone know if theres a computationally efficient way to
fill
> > the diagonal of a square matrix with NaN's
> > WITHOUT using loops?
> >
> > (I tried "diag" & "eye" functions but haven't had any
luck)
> >
> >
> > Jeremy
>
> a(1:size(a,1)+1:end) = nan;
>
> Anh Huy Phan
> RIKEN - BSI

Ah very clever! Thank you.