Scripts to generate digitransit GeoJSON layers from overpass.
- taxi stands
- car parkings (covered and opened)
- park and ride parkings
- car charging stations
- car sharing places
- bike parkings (covered and opened)
- bike charging stations
- bike monitoring stations
- bike rental places
- bike repair stations
- bike shops
The geojson_modifier Python program includes all methods needed and set the global variable for the array
of necessary_properties that includes the keys of the properties which will be saved from deletion.
The geojson_modifier has to be imported before generation.
from geojson_modifier_v2 import *
Global variables that have to be set:
- String destination dir
- String bounding box
- String icon SVG source file
- the String array of showed details in the popup description field (and their translations).
When adding a new field to the details array, make sure to add its translation to all the details_$locale array.
The parameters to be given to the class call (every one is a String):
newLayer = GenerateLayer(dest_dir, bbox, overpass_query, name_de,name_en, iconID, iconSource, details, details_de, details_en)
try: newLayer.run()
except IndexError:
print("No locations found")
IndexError: list index out of range simply means that in the give boundig box area there were no overpass data
given as the result of the query. Thanks to the little hack error handling above, the script will run further without
problem and the generated GeoJson file's feature array will be empty.
MultipleRequestsError means that the Overpass server was overloaded and couldn't answer the query. The request
should be repeated. Fact: If there were too many queries in a short period of time, there probably will be lots of
errors like this.
Follow the original Digitransit documentation.
Important fact: if even only one URL is misleading or even only one layer's feature array is empty (meaning
there were no found coordinates in the given bounding box) none of the layers will be displayed.
You have to make sure that all the given URLs are valid and you shouldn't include an empty layer.
You can add the bounding box (ENV_BBOX), the icon source dir (ENV_ICONSRC) and the destination directory for the GeoJson files (ENV_DDIR) via environment variables.
$ ENV_BBOX="<coordinates>" ENV_ICONSRC="./iconSourceDir/" ENV_DDIR="./destDir/" python generate-layers.py