PDE Toolbox - thermal Problem

I am trying to use thermal conductivity k(x,y) in thermal problems in PDE toolbox. The document suggests that I can set it up as an anonymous function like

k = @(location,state)40 + 0.003*location.x;

This works.

However I would like to use an external function that returns an interpolated value using interp2 function.based on location data.

Is it possible?

Whatever I do I always get the error

Error using pde.ThermalMaterialAssignment/checkCoefFcnHdlArgCounts (line 368)

Function specifying a material property must accept 2

input arguments and return 1 output argument.

[Ravi Kumar]

Can you provide the code sample?

Answer 1

[Panchapakesan Venkataraman]

I solved the problem finally.

I was using interp2 and that was not correct since the data was not in meshgrid format (MATLAB did not point out the error. I discovered it accidently). It was returning the error mentined in the initial question.

I changed to griddata and it worked.

Thanks

Venkat