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Re: Octave's contour function
From: |
Jonathan M Hill |
Subject: |
Re: Octave's contour function |
Date: |
Thu, 7 Dec 2000 17:36:32 -0500 (EST) |
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)
See also: plot, semilogx, semilogy, loglog, polar, mesh, contour,
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
address@hidden
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.
Octave's home on the web: http://www.octave.org
How to fund new projects: http://www.octave.org/funding.html
Subscription information: http://www.octave.org/archive.html
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