Re: error using etree function

[Marco Atzeri]

Am 22.11.2018 um 18:19 schrieb Dmitri A. Sergatskov:
> On Thu, Nov 22, 2018 at 10:24 AM rpsouto  wrote:
>
>     Hello all.
>
>     The function etree is not working.
>
>      >> A=gallery('poisson',16);
>      >> issparse(A)
>     ans = 1
>      >> etree(A)
>     error: etree: S must be a sparse matrix
>
>     This test was performed at versions 4.4.1 and 4.2.2 of GNU Octave
>     (Ubuntu 18.04).
>
>
> On Fedora (octave 4.4.1) I see:
>
> octave -f -q
> octave:1> A=gallery('poisson',16);
> octave:2> issparse A
> ans = 0

you are missing the parenthesis

octave:8> issparse A
ans = 0
octave:9> issparse(A)
ans = 1



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