This repository contains the map renderer behind the Railway History Map. It takes a map described through a simple language based on a set of paths, renders them as bitmap tiles, and provides those via a built-in HTTP server.
The map resulting from the description in the sibling railwayhistory/map repository can be viewed at map.railwayhistory.org.
You can run the renderer locally. For this you need a local copy of the
map definition and point to its
map configuration config.toml using the -m option.
You can limit the regions rendered by specifying the ones you want with
the -r option. This is mostly helpful to decrease the startup time
during map editing. The available regions are given in the map
configuration file.
By default, the renderer will listen on 127.0.0.1:8080 but you can
change this through the -l option. It provides a simple debug view of
the map, so, you can simply point your browser to the address, e.g.,
http://127.0.0.1:8080/ if you haven’t changed the default.
The renderer provides an HTTP server that provides multiple layers. Each produces tiles in spherical mercator projection using the usual OSM tile layer convention for addressing tiles using z, x, and y coordinates. The convention is
/{layer}/{z}/{x}/{y}.png
(It can also produces SVG tiles by replacing .png with .svg but the
results are likely going to look a bit odd).
The following layers are currently available:
el: railway lines colored according to their electrification scheme,el-lat: theellayer but with names transliterated into Latin script,el-num: Railway History Database line number colored for use with theellayer,pax: railway lines colored according to the passenger service provided,pax-lat: thepaxlayer but with names transliterated into Latin script,pax-num: timetable line numbers,border: borders contours.
The rendered map publishes these layers at
https://map.railwayhistory.org/rail/. E.g., if you want to use the
el layer, the usual configuration string is
https://map.railwayhistory.org/rail/el/{z}/{x}/{y}.png.