Re: Plotting question

[Dominique Michel]

Le Mon, 26 Mar 2007 15:32:16 +0200,
David Bateman <address@hidden> a écrit :

> Dominique Michel wrote:
> > Hi all,
> >
> > I am new with Octave and have a problem with the plot function. My system
> > is: gentoo gnu-linux with octave-2.1.73
> >
> > I am trying to do a little octave program that will automatise a little the
> > creation of spice vacuum tube models based on the constant current
> > characteristic.
> >
> > All my program is doing for now (I started yesterday with Octave) is to put
> > a first set of curves in a data structure and try to plot them:
> >
> >
> >   
> Try "plot (a.a.a(:,1),a.a.a(:,2))", giving "plot" a matrix and it treats
> as two curves (as does matlab)
> 
> D.
> 
> 
Thank you, it work. I try with

xlabel "Ua"
ylabel "Ug1"
title "Ug1=f(Ua); Ug2=300V"
grid
mplot
(a.a.a(:,1),a.a.a(:,2),a.a.b(:,1),a.a.b(:,2),a.a.c(:,1),a.a.c(:,2),a.a.d(:,1),a.a.d(:,2),a.a.e(:,1),a.a.e(:,2),a.a.f(:,1),a.a.f(:,2))

and the result is just what I want for now.

BTW, I never used matlab either. I choose Octave because it seemed more
logical to me to use a math program as a spreadsheet for such a work. And also
because Octave seem to have a good matlab compatibility and it can be
useful to me to learn some of Octave basis anyway.

I have one more question. Is it possible to give a title to the 6 lines I get
on the graph? something as "Ia=28 mA" for line 1 and so on until "Ia=192 mA"
for line 6.


Cheers,
Dominique