up [pdf]
from rsf.proj import *

Flow('sin2',None,'''math n1=95 n2=95 d1=0.1 d2=0.1
                    output="sin(x1)*sin(x2)"''')
Result('sin2','''grey color=h label1=x label2=y scalebar=y
                      title="sin(x)*sin(y)"''')

End()

sfmath
sfgrey