Error using pde.PDE Results (line 55)Second argument must be a valid solution from a PDE Toolbox solver function.

Does anyone know what is this error that I get from the function

solvepde(pde)

Answer 1

[Efim Rozenbaum]

I'm wondering, too! I use solvepdeeig in MatLab 2017a (also tried 2016b), and when I add too many boundaries to my 2D geometry (i.e. add too many holes to the region), I start getting this error, and no solution can be found. However, I noticed that when I increase the range in which I search for eigenvalues (evr variable), the procedure starts to work and finds some solutions, so I'm guessing that this error might be an incorrect processing of the case in which no solutions exist within evr. Am I right? Thanks!