ode45 function in package odepkg

[Ether Jones]

Please, how to install odepkg package so I can access ode45() function?

On Octave 3.6.4 running on Windows, I get the following error message:

GNU Octave, version 3.6.4
Copyright (C) 2013 John W. Eaton and others.
Octave was configured for "i686-pc-mingw32".

octave-3.6.4.exe:1> clear all;
octave-3.6.4.exe:2>
octave-3.6.4.exe:2> fvdp = @(t,y) [y(2); (1 - y(1)^2) * y(2) - y(1)]
fvdp =
@(t, y) [y(2); (1 - y(1) ^ 2) * y(2) - y(1)]

octave-3.6.4.exe:3> [t,y] = ode45 (fvdp, [0, 20], [2, 0])

warning: Octave provides lsode for solving differential equations.  For more
information try `help lsode'.  Matlab-compatible ODE functions are
provided by the odepkg package.  See
`http://octave.sourceforge.net/odepkg/'.

Please read `http://www.octave.org/missing.html' to learn how you can
contribute missing functionality.

error: 'ode45' undefined near line 3 column 10
octave-3.6.4.exe:3>

If I type pck install -forge odepkg I get this error message:

octave-3.6.4.exe:4> pkg install -forge odepkg
error: get_forge_pkg: could not read URL, please verify internet connection
error: called from:
error:   K:\OctaveVS\share\octave\3.6.4\m\pkg\private\get_forge_pkg.m at
line 77
, column 7
error:   K:\OctaveVS\share\octave\3.6.4\m\pkg\pkg.m at line 2414, column 15
error:   K:\OctaveVS\share\octave\3.6.4\m\pkg\pkg.m at line 374, column 32
octave-3.6.4.exe:4>





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