bugGNU Octave - Bugs: bug #60460, error on fuction's plot

 
 

bug #60460: error on fuction's plot

Submitter:  None
Submitted:  Tue 27 Apr 2021 09:35:37 AM UTC
   
 
Category:  Plotting Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Incorrect Result
Status:  Invalid / Not an Octave Bug Assigned to:  None
Originator Name:  ponta sergio Originator Email:  -email is unavailable-
Open/Closed:  * Closed Release:  * 6.2.0
Operating System:  * Microsoft Windows Fixed Release:  None
Planned Release:  None
* Mandatory Fields

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Tue 27 Apr 2021 04:23:26 PM UTC, comment #2: 

This is the Octave bug tracker.
Please, use a different platform for asking questions, e.g. the Discourse forum:
https://octave.discourse.group/
Or the help mailing list:
https://lists.gnu.org/mailman/listinfo/help-octave

Markus Mützel <mmuetzel>
Group administrator
Tue 27 Apr 2021 10:52:39 AM UTC, comment #1: 

try
z=(y.*x.^2-x.^2-4.*y+4);

Doug Stewart <dastew>
Tue 27 Apr 2021 09:35:37 AM UTC, original submission:  

% An M-file script to produce
% 3d function plots
x = (-5:0.2:5);
y = (-5:0.2:5);
[x y]=meshgrid(x,y);
z=(y.*x^2-x^2-4.*y+4);
mesh(x,y,z)   % Graphics output
title('distance')
xlabel('x')
ylabel('y')
%
%
% !!! visualized plane and not a quadratic surfaceas as verified
% with wolfram alfa graphics
%
%

Anonymous

 

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    Follow 2 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2021-04-27 mmuetzel StatusNone Invalid / Not an Octave Bug
        Open/ClosedOpen Closed

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