Clean simple errors from GTFS files
gtfs_clean(gtfs, public_only = FALSE)Task done:
0. Remove stops with no coordinates 1. Remove stops with no location information 2. Remove trips with less than two stops 3. Remove stops that are never used 4. Replace missing agency names with "MISSINGAGENCY" 5. If service is not public and public_only=TRUE then remove it (freight, 'trips' aka charters) (these have a null route_type, so loading into OpenTripPlanner fails if these are present) 6. If public_only=TRUE then remove services with 'train_category' not for public use. e.g. EE (ECS-Empty Coaching Stock) 7. Remove shapes that no longer have any trips 8 Remove frequencies that no longer have any trips