On 13.02.2012, at 15:07, Doug Stewart wrote:
> I have
>
> octave:1> ver
> ----------------------------------------------------------------------
> GNU Octave Version 3.6.1-rc0
> GNU Octave License: GNU General Public License
> Operating System: Linux 2.6.32-38-generic #83-Ubuntu SMP Wed Jan 4 11:13:04 UTC 2012 i686
> ----------------------------------------------------------------------
> Package Name | Version | Installation directory
> ---------------+---------+-----------------------
> control *| 2.2.4 | /home/doug/octave/control-2.2.4
> miscellaneous *| 1.0.11 | /home/doug/octave/miscellaneous-1.0.11
> optim *| 1.0.17 | /home/doug/octave/optim-1.0.17
> signal *| 1.1.2 | /home/doug/octave/signal-1.1.2
> specfun *| 1.1.0 | /home/doug/octave/specfun-1.1.0
> struct *| 1.0.9 | /home/doug/octave/struct-1.0.9
>
>
> i do:
>
> octave:2> help c2d
> error: help: `c2d' not found
>
> but
> octave:2> help tf
> `tf' is a function from the file /home/doug/octave/control-2.2.4/@tf/tf.m
>
> -- Function File: S = tf ("S")
> -- Function File: Z = tf ("Z", TSAM)
> -- Function File: SYS = tf (SYS)
> -- Function File: SYS = tf (N
>
>
> Why are some of the things in control pkg available and others are not?????
>
> Doug
>
>
>
> --
> DAS
I can't help it. You have to type "help @lti/c2d". It is explained in the control.pdf, located in /home/doug/octave/control-2.2.4/doc: