I am using Spice to model a plate heated with discrete rsesitors. The limitation is the gradient not more than 3 degrees C. How amny and where on the plate for a power of 2kW. Specifically I nee d to model a 'resistor' with the equation v=100-i.100. Can't get LTSpice to acccept .param .func. And of course KISS doesn't apply and of we go into complicated things which don't show the underlying method. Any clues folks? Any help gratefully acknowledged.