vurgit / roa-van-der-pol Goto Github PK

Hi, thanks for your help!

I encountered the following error when I ran your algorithm in Matlab 2022a:

Error in sosconstr (line 112)
symexpr = poly2dpvar(symexpr,prog.decvartable);

Error in sosineq (line 125)
sos = sosconstr(sos,'ineq',symexpr);

Error in SOS_ROA_Estimation_example (line 45)
prog1_2 = sosineq(prog1_2, -(dotV + L2 + s2_sol * (gamma - V)) );

Looking forward to your reply!

Hi,
I have executed this script with "Sedumi" as a solver. In the third iteration, it fails in

` Warning: Primal program infeasible, no solution produced.
Index exceeds the number of array elements. Index must not exceed 0.

Error in sosgetsol (line 87)
coeffs = [V.degmat(:,idxdecvar1) 1-sum(V.degmat(:,idxdecvar1),2)]*[sos.solinfo.RRx(idxdecvar2);1];

Error in vanderpol_1_3 (line 47)
gamma_sol = sosgetsol(prog1_2, gamma);`

Any ideas why this happens? Should I use another solver?