A basic way to create schematic transit maps is to iteratively replace existing straight arcs between stations by circular arcs. Possible results can be seen in this poster presentation: http://www1.informatik.uni-wuerzburg.de/fileadmin/10030100/_temp_/circularArcMetro_01.pdf

Goal: Reproduce the results shown in this presentation. We already have a tool available to render the maps. Your work would mainly consist of generating the circular arc skeleton out of an existing transit network (given to you as GeoJSON) and producing a similar GeoJSON file as output, where the geometries are only circular arcs.

Requirements:

1. You tool should be able to reproduce the results in the presentation shown above (minus the local enlargement step) 2. You should write a tool that can be used from the command line. 3. The output format should be the GeoJSON format used by LOOM.

Optional:

1. Deformation of the initial map by local enlargement (see the presentation shown above)