Re: How doyou vectorize pulling values out of a matrix?

[Jordi Gutierrez Hermoso]

On 24/07/06, Robert A. Macy <address@hidden> wrote:
> this for loop works...
> >> for i=1:100
> >> output(i)=mymatrix(Xindex(i),Yindex(i));
> >> endfor
>
> but this didn't...
> >> output(1,:)=mymatrix(Xindex(1,:),Yindex(1,:));
> everything matches, what's wrong?
>
> how do you vectorize this operation?

I'm not sure this is the best way, but at least it works and it's vectorised:

    octave:1> output = diag(mymatrix(Xindex,Yindex));

HTH,
- Jordi G. H.