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## Re: Octave's contour function

 From: Paul Kienzle Subject: Re: Octave's contour function Date: Fri, 8 Dec 2000 09:52:35 +0000 User-agent: Mutt/1.2.5i

```Ah, the bane of Matlab compatibility!  The CVS archive now has a new
parameter order for the contour function:

contour (x, y, z, n)

Sorry!

Paul Kienzle

On Thu, Dec 07, 2000 at 05:36:32PM -0500, Jonathan M Hill wrote:
> Hello;
>
>      I was just playing with the contour function the other day and
> managed to make a simple example.  I used the online help to
> construct the  example.  I'm sorry that I don't have much experience
> with this.
>
> octave:2> help contour
>  usage: contour (z, n, x, y)
>
>            bar, stairs, gplot, gsplot, replot, xlabel, ylabel, title
>
>      Here is what I discovered; z is a rectangular matrix, the
> simplest use assumes (0,0) to be the lowest corner and uses the matrix
> size to get the other.  n is the number of isolines to draw, I think the
> default is 11 lines.
>
> octave> z = [
> 1 1 1;
> 1 1 2];
> octave> contour(z)
>
>      The x and y terms are optional vectors, either column or row type.
> I think these are used to define other values for the x and y axes.
>
> octave> contour(z, 4, [0 1], [0 0.5 1])
>
>      Perhaps a few others have some comments to make?
>
>                                               Jonathan Hill
>
> On Thu, 7 Dec 2000, Fernando Fraga e Silva wrote:
>
> >
> > I couldn't figure how to use the function "contour" by reading the info
> > manual about this one. I missed a simple example as a pattern to learn to
> > use
> > it. Does anyone here could send me a little example about it ?
> >
> > I need to plot the contour of a function f(x,y).
> >
> > I'm really thanks .
> >
> > ---
> > Fernando Fraga e Silva
> > Undergraduated Mechanical Engineering Student from University of São Paulo
> >
> >
> >
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> > Octave is freely available under the terms of the GNU GPL.
> >
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> >
> >
>
>
>
> -------------------------------------------------------------
> Octave is freely available under the terms of the GNU GPL.
>
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>

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Octave is freely available under the terms of the GNU GPL.

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