[Octave-bug-tracker] [bug #61961] Griddata cannot produce mesh on vertical vertices

[Razdvizh]

Follow-up Comment #3, bug #61961 (project octave):

[comment #1 comment #1:]
> Is there an absolute minimum viable example here?

clear all;clf

t=-2*pi:.1:2*pi;
coord(1:columns(t),1)=cos(t);
coord(1:columns(t),2)=sin(t);
coord(1:columns(t),3)=-1;

coord(1+columns(t):2*columns(t),1)=cos(t);
coord(1+columns(t):2*columns(t),2)=sin(t);
coord(1+columns(t):2*columns(t),3)=1;

limits = [min([coord(:,1)]), max([coord(:,1)]) ,...
min([coord(:,2)]), max([coord(:,2)]),...
min([coord(:,3)]), max([coord(:,3)])];
xlabel("x");ylabel("y");zlabel("z");

view(3);

xlabel("x");ylabel("y");zlabel("z");
plot3(coord(:,1),coord(:,2),coord(:,3));
axis ("equal",limits);

hold on;
 
 [xx,yy] = meshgrid (linspace (min(coord(:,1)),max(coord(:,1)),200));
  zz = griddata (coord(:,1),coord(:,2),coord(:,3),xx,yy);
 mesh(xx,yy,zz);
 hidden('off');


(file #52775)
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