OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › General Topics › How to use a SuperIdentity3D pointer to pass between two time step › Re: How to use a SuperIdentity3D pointer to pass between two time step June 19, 2017 at 4:33 pm #2646 mathiasKeymaster Dear steed188, it is quite simple, just use the constructor SuperData3D(SuperF3D<T,BaseType>& rhs); Please, also use the dogygen docu if you need to know interfaces. By the way, registration for our spring school in 2018 is open! Best Mathias