I have solved a PDE (2 spatial dimensions + time) using the PDE Toolbox. I would like to do plots where I hold one spatial dimension fixed and plot the solution over the remaining spatial dimension and time. It would be trivial to do this if my solution was in the form of a matrix with axes (x,y,t), but it's not clear how to convert the NodalSolution object returned by the PDE solver into such a matrix. Is this possible? If not, is there a simple way to get the kind of plot I mentioned using this object directly?