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Re: Octave 4.0.0_signal package_ellipord.m_xubuntu

From: Tarmo Tapio
Subject: Re: Octave 4.0.0_signal package_ellipord.m_xubuntu
Date: Thu, 1 Nov 2018 21:39:01 +0200
User-agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1

I have now xubuntu 16.04 and octave 4.4.1 but I can not install signal package. What is correct command? To install octave 4.4.1 I had to use flatpak...flathub...etc. Command sudo apt-get install octave-signal do not work anymore.


Doug Stewart kirjoitti 1.11.2018 klo 18.02:

On Thu, Nov 1, 2018 at 10:42 AM Tarmo Tapio <address@hidden> wrote:


I can not open this kind of file format. Are you using Linux or windows pc? What octave version?


I am on ubuntu 18.04 octave 4.4.1

Try this file

Doug Stewart kirjoitti 1.11.2018 klo 14.40:

On Thu, Nov 1, 2018 at 8:08 AM Tarmo Tapio <address@hidden> wrote:

I included it last time, but here is txt-file.

% The following 3 lines produce filter coefficients shown in Table 6.1.
wp = [0.35,0.65]; ws = [0.25,0.75]; Rp = 1; As = 50;
[N, wn] = ellipord(wp, ws, Rp, As);
[b,a] = ellip(N,Rp,As,wn);
w = [0:500]*pi/500; H = freqz(b,a,w); magH = abs(H);
magHdb = 20*log10(magH);

This code works OK for me!
I get the results shown in the attached file




Doug Stewart kirjoitti 1.11.2018 klo 12.50:

On Thu, Nov 1, 2018, 12:25 AM Tarmo Tapio <address@hidden wrote:

I have upgraded now to version 4.2.2 (sudo add-apt-repository ppa:octave/stable) but I get same error.

Can you show me a small section of code  that will make the error?

Doug Stewart kirjoitti 31.10.2018 klo 19.22:

On Wed, Oct 31, 2018 at 1:08 PM Tarmo Tapio <address@hidden> wrote:

I have problem to use Octave 4.0.0 version's function ellipord.m (signal
package version 1.4.0?). File included. I get error
"validate_filter_bands". My operation system is Linux Xubuntu 16.04.
What is my fault?


Thank you for starting a new thread.
Octave 4.0.0 is very old, and lots of thing have been fixed since then.
I think you should upgrade to the newest octvae.



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