The FillPartialArrays filter is a new feature that allows you to fill one ore several partial attribute array with a constant value per component.
By default, the filling value for each attribute depends of the type of data:

• 0 for uint data
• -1 for int data
• nan for float data

This filter uses the fillPartialAttributes function from the arrayModifier file. An update to the function allows you to choose the value to fill for each component if multiple.
As part of the refactoring, the filter, FillPartialArrays, is present in geos-mesh and a Paraview plugin, PVFillPartialArrays, referencing the filter is present in geos-pv.