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3D Surface Plot Example using Octave

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Introduction

In this tutorial, we will learn to plot a 3D Surface plot using Octave. Useful functions to plot in 3D are as follows :

Code Listing

% 3D Surface Plot Example
        % www.TestingDocs.com
        points = linspace(-3,3,100);
        [x,y] = meshgrid(points,points);
        z= -3./(1+ x.^2 + y.^2);
        surf(x,y,z);
        xlabel("x-axis");
        ylabel("y-axis");
        zlabel("z-axis");
        title("Surface Plot Example - www.TestingDocs.com");




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Notes


linspace (start, end, n)


linspace returns a row vector with n linearly spaced elements between the start and end

parameters.


meshgrid(x,y)


meshgrid returns the 2D grid matrices for the passed x and y vectors.


surf


surface mesh is plotted with the output of the meshgrid 2D matrices.


  





To know more about any function use the doc command in the command window.


>> doc <functionName>


For example, to know more about linspace function usage, type the command :


>> doc linspace


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Octave Tutorial on this website can be found at:

https://www.testingdocs.com/octave-tutorial/


More information on Octave can be found on the official website:

https://www.gnu.org/software/octave/index




    





  




	


	






		

			
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