Morphometric analysis of river channels

River channels are landforms created by flowing waters.

In digital format, the river channels can be represented as channels or as polygons.

For their geomorphometric analysis, it is necessary to create the middle line of the river bed. To create the middle line of the river bed, from the polygon topology, it must be transformed into a line, then into points, with the latter filling at a certain distance.

Using Thiessen's polygons, Thiessen polygons will be used.

Thiessen polygons must be transformed into line topology, to be edited. Editing is done through a spatial query so that only those lines that are within the river boundary are selected.