: hello. I got some octave binaries a few months ago. Unfortuanately

: they came

: with no documentation on how to use the program. but i found a note saying

: that the sources were on a ftp site. so i got the source and tried to pull

: out the documentation files. I didn't see any user help.

:

: Is there some kind of Octave tutorial? Is there any octave documentation on

: how to use Octave? If so am i overlooking it in the source files or could

: somebody send me a copy?

Unfortunately, there isn't much documentation yet. The closest thing

is an out of date man page in the source distribution.

For Matlab basics, which might be of some help in using Octave, there

is a tutorial available from netlib, either via the mailserver at

netlib.ornl.gov, or via anonymous ftp from research.att.com in the

file /netlib/matlab/teaching/primer.tex.Z.

I would consider trying to modify this and distribute it with Octave

except that it looks almost identical to parts of the Matlab manual

that I have. For example, the tables of functions are formatted the

same, the text is organized in the same way, etc. Some of the text is

nearly identical as well...

: and if for some reason there is no documentation could someone tell

: me how to define a function and integrate it?

Do you mean solve a set of ODEs, or integrate a nonlinear function of

one variable?

The test directory in the source contains a simple example of

integrating three nonlinear ODEs. Look for the file that defines the

function `oregonator'.

Here is an example of integrating a simple nonlinear function over a

finite interval:

octave:5> function y = expneg (x) y = exp (-x); end

octave:6> [v, ier, nfun, err] = quad ('expneg', 0, 1)

v = 0.632121

ier = 0

nfun = 21

err = 2.83319e-14

--

John W. Eaton | 4.3BSD is not perfect. -- Leffler, et al. (1989).

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