from java.awt import Color
from jhplot import *

c1 = HPlot3DP("Canvas")  
c1.setGTitle('3D surfaces')
c1.visible()

f1=FPR('n=2.5 Pi; z=sin(n*x)+sin(n*y); z=z/n')
f1.setFillColor(Color.red)
f1.setLineColor(Color.green)
c1.draw(f1)