Convert an ESRI shapefile (.shp, sbx, .dbf) into an "rnet" file.
Requires networkx Requires gdal
To get both:
pip install networkx gdal
The rnet (road-network) file format is space separated columns, looks like this:
edge_id from_id to_id from_lng from_lat to_lng to_lat
The edge_id is automatically generated.
Why? Because sometimes graphs come in shapefiles, that is difficult to plot w gnuplot, but with the rnet file, it is very easy. Example:
plot 'output.rnet' using 4:5:($6-$4):($7-$5) w vectors nohead lt rgb 'black' lw 1
Example:
shp2rnet edges.shp -o "output.rnet"