from visad import FunctionType, Linear1DSet, FlatField, Real
from visad.python.JPythonMethods import *

domain = getRealType("temp_F")
range = getRealType("temp_Kelvin")
convertTemp = FunctionType(domain, range)
domain_set = Linear1DSet(-40, 212, 2)
values = ( (233.15, 373.15), ) # deg K values for -40F and 212F

convertData = FlatField(convertTemp, domain_set)
convertData.setSamples(values)

e = Real(14.0)
v = convertData.evaluate(e)
print "value for 14.0F =",v

vf = (v.getValue() - 273.15) * 9 / 5. + 32
print "     or (doing some math) = ",vf