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tph.py configuration file format

tph.py is driven by a configuration file which lists the plots to be generated from a GTFS feed. This file documents the configuration file format.

Core configuration

The configuration file should start with a config section.

The config section has one required parameter, target_date, which must contain the date used in generating plots, in YYYY-MM-DD format.

The location of the GTFS feed database can also be specified in the gtfs_db parameter; if it is not given in the configuration file, then it must be given on the command line.

Generating plots

Each plot is specified in its own section in the configuration file; the name of the section is irrelevant, but must be unique. There are three required parameters:

target_routes
Comma-separated list of route IDs to include in the plot
target_stopid
Stop ID to use; if it is a child stop, then the parent stop and all siblings will be included
outfile
Output file; either PDF or SVG.

The target_date parameter can also be given for individual plots, in which it will override the global value.

If the feed does not use direction_id

If the feed does not use the direction_id field for trips, there are two options, depending on the structure of the feed.

  • If every trip for a given route operates in the same direction, then use the direction_0_routes and direction_1_routes configuration parameters. Both parameters take a comma-separated list of route IDs.
  • If trips in both directions are commingled in the same route, then use the direction_0_terminals and direction_1_terminals configuration parameters. Both parameters take a comma-separated list of destination stop IDs.

The two sets of parameters given above can be combined depending on the situation.

If the feed's direction values are invalid

If the feed contains values for direction_id, but those values are unusable—meaning that all trips, regardless of actual direction, are set to either 0 or 1, then set override_direction, and follow the directions above to force a valid direction for each trip.

If the feed does not use headsigns

If the feed does not provide headsigns, either in the trips or stoptimes, then a headsign will be synthesized from the name of the last stop of the trip. This behavior can be forced by setting the override_headsign parameter.