prepare_shape_points: Select and sort the shape points

In gtfstools: General Transit Feed Specification (GTFS) Editing and Analysing Tools

Select and sort the shape points

Description

Select and sort the shape points

Usage

prepare_shape_points(gtfs, shape_id = NULL)

Arguments

gtfs	A GTFS object.
shape_id	The shape_ids whose points should be selected, or NULL to select every shape.

Value

A new data.table with the shape_id, shape_pt_lat, shape_pt_lon and shape_pt_sequence of the selected points, sorted by shape_id and shape_pt_sequence. Points with missing coordinates are kept; points with a missing shape_id are kept when every shape is selected (the callers never request a missing shape_id).

gtfstools documentation built on Oct. 28, 2026, 5:13 p.m.