This routine takes a grid file and a closed 3D polyline, and combines the two. The elevations of the closed polyline are assigned to the grid elevations. Then the polyline is modeled and the resulting surface is applied to the original grid inside the polyline area. The resulting grid is then saved to a new grid file.
Select a perimeter polyline:
Reading cell> 12604
Adding intersections with grid to polyline...
Assigning elevations...
Triangulating...
Setting new grid elevations...
Reading cell> 12604
Pulldown Menu Location: StrataCalc
Keyboard Command: cleanupgrid