init_impl PrescribedSliding update ~PrescribedSliding

PrescribedSliding() pism::stressbalance::PrescribedSliding::PrescribedSliding ( std::shared_ptr< const Grid >  g ) Shallow stress balance class that reads u and v fields from a file and holds them constant. The only use I can think of right now is testing. Definition at line 304 of file ShallowStressBalance.cc.