Here's what I'm trying to do:
R=1
L=8
n=2
h=3
m=3
f(x,y,z)=x**2+(y-h*(z/L)**m)**2-(R*(1-(z/L)**n))**2
set vgrid $wh size 100
set vxrange [-R:R]
set vyrange [-R:h+R]
set vzrange [0:L]
vfill ?
splot $wh w isosurface level 0
Why does vfill require a file or datablock as a source? Why can''t my function f be used as easily as plot and splot allow plotting expressions/functions instead of files or datablocks?
Al