What do we know about parsen

• parsen interpolates cross section data for a branch when more than one cross section is defined
• cross section data is interpolated for calculation points along the branch
• parsen calculates conveyance based on water level and friction
• parsen calculates the slope/incline between cross sections
• flow area

What functionality do we need to reuse

• interpolation
• conveyance calculation

Where do we call specific routines belonging to parsen

• preprocessing
• user interface ?!