Re: Problem entering functions

[marco atzeri]

On 6/1/2012 2:38 PM, James Sherman Jr. wrote:
> On Fri, Jun 1, 2012 at 3:09 AM, George, Michael David
> <address@hidden <mailto:address@hidden>> wrote:
>
>     I'm trying to just run a simple root locus problem but I can't even
>     use the transfer function on octave.
>
>     Here's what I type in and this is what I get:
>
>     sys=tf([1], [1 8 32 0]);
>     error: 'tf' underfined near line 7 column 5
>
>     What am I doing wrong??
>
>     Michael George
>
>
> It seems like you do not have the control package installed.  You can
> install it from here:
> http://octave.sourceforge.net/control/index.html
>
> and the instructions to install are here:
> http://octave.sourceforge.net/index.html
>
> Hope this helps,
>
> James Sherman

James,
that is the last resort as "pkg install control*"
is in reality a "compile from source and install" ;
it is not for everyday and require a lot of prerequisite.

The easy solution it check the availability of the control
package in binary format for whatever system Michael is using.
If/when installed than "pkg load control" is much effortless.

Regards
Marco