resistivity plotting

Hi

I am running a stationary model of a wire network usinf Electric currents and Heat transfer in solids . Each copper

wire (linearised reistivity) has a constant current. There are heat losses to the air and heat conducted between

wires at their junctions.

There is a resultant temperature gradient along each wire. How can I get a plot of the variation in resistivity?

I see uniform heat losses along the wire even though the temperature varies (and therefore resistance should vary)

Something seems to be working because temperatures are a bit lower with constant conductivity model.

Thanks

David