Normally we have two shapefiles, Point and Polyline. We then populate my polyline layer with the point data ID where the lines start to where they end; eg. create two columns (from and to).
However in a GIS system representing electrical network, we have only one shapefile Polyline. No shapefile for Points. How can we generate and populate shapefile for points.
X and Y coordinates are available for start node and end node.
However in case of two line segments of a polyline, the common point / joint should have should be represented by a single point only. How can we generate and populate point shapefile and establish two columns in polyline with IDs of two points ?