On 15 May 2013 21:09, Nico Schlömer <[email protected]> wrote: >> Not from the high-level interface. >> If you use the NewtonSolver class directly, the solve function returns >> the number of iterations. > > Right. This functionality would be really useful for me to have in Python as > well, so I added a suggestion enhancement. >
You can get it in Python. Just use the NewtonSolver class. Garth > Cheers, > Nico > > > > On Wed, May 15, 2013 at 8:14 PM, Garth N. Wells <[email protected]> wrote: >> >> On 15 May 2013 16:18, Nico Schlömer <[email protected]> wrote: >> > Also: Is there a way to extract the number of performed Newton >> > iterations? >> > >> >> Not from the high-level interface. >> >> If you use the NewtonSolver class directly, the solve function returns >> the number of iterations. >> >> Garth >> >> >> > --Nico >> > >> > >> > On Wed, May 15, 2013 at 5:02 PM, Nico Schlömer >> > <[email protected]> >> > wrote: >> >> >> >> Hi, >> >> >> >> two brief question about the nonlinear solver interface, >> >> >> >> solve(F == 0, u) >> >> >> >> * How to specify an intial guess? Is the value used that's found in u? >> >> * In the output, >> >> >> >> Newton iteration 1: r (abs) = 3.402e-01 (tol = 1.000e-10) r (rel) >> >> = >> >> 1.040e+00 (tol = 1.000e-09) >> >> >> >> is it correct that r(rel) = F(x)/F(x0)? >> >> >> >> --Nico >> > >> > >> > >> > _______________________________________________ >> > fenics-support mailing list >> > [email protected] >> > http://fenicsproject.org/mailman/listinfo/fenics-support >> > > > _______________________________________________ fenics-support mailing list [email protected] http://fenicsproject.org/mailman/listinfo/fenics-support
