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Re: Odepkg


From: Thomas D. Dean
Subject: Re: Odepkg
Date: Sun, 30 Jul 2017 19:01:20 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1

On 07/30/2017 05:21 PM, Tatsuro MATSUOKA wrote:

On 4.3.0+, ( local build,  two weeks ago)

octave:321> fvdb = @(vt,vy) [vy(2); (1 - vy(1)^2) * vy(2) - vy(1)];
octave:322> vopt = odeset ("RelTol", 1e-3, "AbsTol", 1e-3, "NormControl", "on", "OutputFcn", @odeplot);

octave:323> ode45 (fvdb, [0 20], [2 0], vopt);
warning: Option "InitialStep" not set, new value 2.000000 is used
warning: called from
    ode45 at line 182 column 5
warning: Option "MaxStep" not set, new value 2.000000 is used
warning: called from
    ode45 at line 190 column 5
octave:324> line 104: warning: Cannot toggle log scale for volatile data

But, I get a plot...

Tom Dean



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