/GTFS-GO

QGIS-Plugin to parse GTFS data, to show and aggregate routes and stops.

Primary LanguagePythonGNU General Public License v2.0GPL-2.0

GTFS-GO

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QGIS Plugin to extract GTFS-data as GeoJSON and render routes and stops on the Map.

Usage

General

Select datasource

  • local zipfile
  • download preset datasource

Processing

Simple parsing - routes and stops

GTFS tables has routes-data and stops-data but tables-structure is somewhat complicated.
This plugin can parse them into simple routes and stops GeoJSON files, also set a beautiful style on layers.

Traffic frequency aggregation

GTFS also has service time-table information. This plugin can aggregate traffic frequency, how many times do each PATH used. PATH means lines between two stops.
In addition, it is possible to unify SIMILAR stops - having same parent_stop or same prefix or same stop_name and near to each.

  • numbers along with lines indicate a frequency of each lines, set on left side towards direction of path (UK traffic style)
  • larger number of frequency, lines become bolder
  • result.csv is a table comparing before and after unified stops.

unifying algorithm

You can see similar stops unified into one stop.

  • before

  • after

stops unifying rules

Smaller number of rules is prefered.

  1. parent_stops

    • if stops have parent_stops value, unifying them into parent station
    • new stop_id is parent's one

  2. stop_id prefix

    • by defining delimiter, split stop_name into prefix and suffix, group same prefix stops
    • new stop_id is the first stop's one in grouped stops ordered by stop_id ascending.

  3. stop_name and distance

    • unifying stops having same stop_name and near to each in certain extent - 0.003 degree in terms of lonlat-plane
    • new stop_id is the first stop's one in grouped stops ordered by stop_id ascending.

unifying result

In result.csv, you can see stops unifying result.

Acknowledgements

Version2.0.0, in which the frequency aggregating function is added, got technically and financially supported by Toyota Mobility Foundation and Traffic Brain. Thank you for great contributions!

Contribution

Translation

  1. edit to gtfs_go.pro and add GTFSGO_lang_encoding.ts inside the TRANSLATION variable
  2. cd i18n
  3. generate the translation files with pylupdate5 ../gtfs_go.pro on debian you have to install pylupdate with apt install pyqt5-dev-tools
  4. edit the newly generated file GTFSGO_lang.ts to contain the new translations
  5. generate qm file with lrelease GTFSGO_lang_encoding.ts

new data sources

  • Some data sources can be added from here however you need to check they have all the required .txt files

Tests

  • needs pandas
pip install pandas

cd GTFS-GO
python -m unittest discover gtfs_parser/tests