Re: Plotting a function of 3 variables ?

[Martin Helm]

Oisin found meanwhile that scatter3 does what he want

[x,y,z] = meshgrid(-10:1:10,-5:1:5,-8:2:8);
% this creates x,y and z 3-D arrays, x contains -10:1:10 replicated
length(-5:1:5)xlength(-8:2:8) times, y contains -5:1;5 replicated .....
c = x.^2+y.^2+z.^2;
% c is now our function of 3 variables
figure
scatter3(x(:),y(:),z(:),5,c(:),'filled')

which gives the attached result with fltk but does not work with gnuplot.

Anyone has an idea if that can somehow work with gnuplot as well?

Otherwise I file a bug.

scatter3.png
Description: PNG image