Re: assist

[Jordi Gutiérrez Hermoso]

On 4 March 2012 23:09, joseph appau <address@hidden> wrote:
>
> how do i write a function file that takes as input a matrix Ą, and
> tests wether or not the matrix is a squaren

    issquare (A)

> and diagonally dominant.

Which definition of this are you using? There are several meanings of
it. If you mean that the diagonal is larger than the sum of the
absolute values of the off-diagonal entries, you can do

    all (sum (abs (A), 2) < 2*diag(abs (A)))

HTH,
- Jordi G. H.