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transitmattr 0.2.0

Breaking changes

  • All mode-specific data functions (tm_headways(), tm_dwells(), tm_travel_times(), tm_ridership(), tm_trip_metrics(), tm_line_delays(), tm_service_hours(), tm_speed_restrictions(), tm_aggregate_headways(), tm_aggregate_dwells(), tm_aggregate_travel_times(), tm_aggregate_travel_times2()) have been removed. Use the new query builder interface instead (see below).

  • tm_time_predictions() now requires a route_id argument.

  • All data-fetching functions previously returned a list of records. Query builder terminal methods now return a data.frame directly, so bind_rows() or do.call(rbind, ...) conversions are no longer needed.

New query builder interface

Data is now fetched through mode-specific R6 query objects. Each object is created with a constructor, configured by chaining builder methods, and activated by a terminal method:

  • tm_rt_query(line) — rapid transit (Red, Orange, Blue, Green, Mattapan)
  • tm_bus_query(route) — bus routes
  • tm_cr_query(route) — commuter rail routes
  • tm_ferry_query(route) — ferry routes

Builder methods (return the object invisibly for chaining): $stop(), $from_stop(), $to_stop(), $direction(), $date(), $date_range()

Discovery methods: $stations() and $directions() return data frames of available stops/directions without hitting the data API.

Terminal methods (return a data.frame): $headways(), $dwells(), $travel_times(), $aggregate_headways(), $aggregate_dwells(), $aggregate_travel_times(), $ridership(), $trip_metrics(), $line_delays(), $service_hours(), $scheduled_service(), $speed_restrictions()

Commuter rail and ferry terminus stations now emit a warning when selected via $stop(), $from_stop(), or $to_stop(), as stop IDs may be missing in one direction.

New functions

  • tm_bus_routes() — returns a sorted character vector of all supported bus route IDs (local lookup, no API call).
  • tm_cr_routes() — same for commuter rail routes.
  • tm_ferry_routes() — same for ferry routes.

transitmattr 0.1.0

  • Initial CRAN release.