Here's a question for the COMSOL whizzes: I'm using the COMSOL 3.5a Diffusion Toolbox. I have a 1D reaction-diffusion model that is controlled by a catalyst. The spatial distribution of catalyst along the 1D space is independent of the other chemical species and I have data for the catalyst distribution over time and space. Right now, I am fitting this data with a Fourier approximation and using the approximation in my PDEs. I heard from the grapevine that one can hand datasets to COMSOL. It interpolates and feeds this interpolation directly to the solver. It would be nice to hand COMSOL my catalyst data and let it do the interpolation. In general, this would allow me to cut out the middle Fourier fitting step and save some time. As usual, the COMSOL documentation isn't that useful. Can anyone point me toward the COMSOL features that handle this? (If this feature actually exists.) Thanks much!