colorize-transit-graph
Add “random” line colors to a given transit graph, e.g. generated using osm-transit-graph
.
Installation
npm install -g colorize-transit-graph
Usage
The library will add color
attributes to all lines / line groups that don't yet have color information. Existing colors will be conserved.
The output graph could then be drawn by using svg-transit-map
.
CLI
Usage: cat graph.json | colorize-transit-graph > colorized-graph.json
Where graph.json
containts a graph object with three attributes:
nodes: // list of all nodes id: "900000042101" // required metadata: x: 537029 // x-coordinate in any metric, required y: 673576 // y-coordinate in any metric, required, see also the --invert-y option // … edges: // list of all edges // the direction of the edge will be ignored, source and target are therefore interchangeable source: "900000120025" // node id, required target: "900000120008" // node id, required metadata: lines :"U5""U6" // list of line ids, required. please note that parallel lines must be modeled as one edge with two metadata.lines entries // … lines: // additional information for lines. if lines are not found in this list, default colour / group will be applied id: 'U6' // line id, required color: '#456' // line colour, optional. existing information will be conserved group: 'U6' // line group id, optional. lines with the same group id will be merged info one for sections where they run in parallel // …
As a library
The module can be used as a JS library:
const colorizeTransitGraph = const graph = // your transit graph const colorized =
Example
Graphs drawn using svg-transit-map
.
cat example/berlin-input.json | colorize-transit-graph > example/berlin-output.json cat example/berlin-output.json | svg-transit-map > example/berlin-output.svg
Input
Output
Contributing
If you found a bug or want to propose a feature, feel free to visit the issues page.