Changes for version v1.0.0 - 2026-07-10
- The function as_graph() now takes into account the data regarding the per-link line restrictions from the class Map::Tube (see version 5.1.0 of Map::Tube); that is, the method now is able to figure out which lines an edge belongs to. until now an edge was created for each line that the two stations had in common despite the fact that the physical link did not go through all those lines in one direction which caused the two-way edges to be created for a link that was actually one-directed. The function as_graph() previouslly created a directed graph for each link defined in the link object, therefore, no changes to the graph structure is required, however, now the processing of the link restrictions means that no edges are created for lines that are blocked in one direction, thus allowing for the creation of one-directional edges rather than a loop. Thanks @gws.
- Corrected graph_line_image() (used by as_image($line)/as_png($line), for instance, map-tube --gen --line X) misrepresenting stations that cannot be reached at all from the chosen line. The "which of the off-line stations to include for reference" calculation employed Graph's neighbours_by_radius(), which for directed graphs counts both successors AND predecessors as neighbours. So any station connected via a one-way connection to one of the line's station (but no way back) would be included even if it is currently impossible to reach the station by means of the line. It would be depicted as a completely isolated node not having any edges at all as all its (one-way) edges don't lead in the necessary direction. Now only the successors of the line's station are considered, thus keeping the picture true to reality. Thanks @gws.
- Upgraded dependency on Map::Tube v5.1.0.
- Switched to dotted-decimal versioning (v-strings).
Modules
Graph plugin for Map::Tube.
Helper package for Map::Tube::Plugin::Graph.