The pumpkin is generated using Scilab 5.5.1,
function Myparam3d_2()
my_handle = scf(100001);
clf(my_handle,"reset");
my_plot_desc = "";
my_handle.figure_name = my_plot_desc;
xtitle(my_plot_desc,"x","y","z");
//flower????
t = 0:0.01:(2.0*%pi);
x = (3.0+5*cos(t*20)).*cos(t);
y = (3.0+5*cos(t.*20)).*sin(t);
z = 10*0.02*sin(t.*20);
p=get("hdl"); //get handle on current entity (here the polyline entity)
p.foreground=5;
param3d(x,y,z,45,60,"",[2,0]);
endfunction
Myparam3d_2();
clear Myparam3d_2
There or about. You may need to use the right mouse button to move the perspective of the graphic output to get the proper view.