Trace and skeleton

dune.mmesh.skeleton(interfaceFunction, grid=None)

Return the skeleton representation of a discrete function on the interface grid.

Parameters

• interfaceFunction – The discrete function on the interface grid.

• grid (Grid, optional) – The bulk grid. Necessary, if wrapped.

Returns

Skeleton representation of given interface function.

Note

This function has to be restricted when evaluated on facets, e.g. using avg(skeleton).

dune.mmesh.trace(bulkFunction, igrid=None, restrictTo=None)

Return the trace representation of a discrete function on the bulk grid.

Parameters

• bulkFunction – The discrete function on the bulk grid.

• igrid (InterfaceGrid, optional) – The interface grid.

• restrictTo – already restrict the trace to ‘+’ or ‘-’ side

Returns

Trace representation of a given interface function. This function has to be restricted to positive (‘+’) or negative side (‘-‘).