Re: plotting problem

[Ben Abbott]

On May 16, 2010, at 5:31 AM, shimon cohen wrote:

> Hi,
> I just installed octave in my server.
> When i am trying to plot a simple curve the following message appears. 
> *****************************************************************************************
> octave:1> x=[0:0.1:10];
> octave:2> plot(x,sin(x));
> 
> gnuplot> if (exists("GPVAL_TERM")) print GPVAL_TERM; else print NaN
>                     ^
>          line 0: invalid expression
> 
> error: Invalid call to strcat.  Correct usage is:
> 
>  -- Function File:  strcat (S1, S2, ...)
> 
> 
> Additional help for built-in functions and operators is
> available in the on-line version of the manual.  Use the command
> `doc <topic>' to search the manual index.
> 
> Help and information about Octave is also available on the WWW
> at http://www.octave.org and via the address@hidden
> mailing list.
> octave:3>
> *****************************************************************************************
> Please help

What version of octave and gnuplot do you have installed?

I suspect you have gnuplot < 4.2 installed. If you upgrade the error will go 
away.

Ben