[Octave-bug-tracker] [bug #60460] error on fuction's plot

[anonymous]

URL:
  <https://savannah.gnu.org/bugs/?60460>

                 Summary: error on fuction's plot
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Tue 27 Apr 2021 09:35:37 AM UTC
                Category: Plotting
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: ponta sergio
        Originator Email: sergio.ponta@yahoo.mail
             Open/Closed: Open
                 Release: 6.2.0
         Discussion Lock: Any
        Operating System: Microsoft Windows

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Details:

% 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 
%
%




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