quetzal.io.importer module

quetzal.io.importer.from_linedraft(links, nodes, zones, recolor, cut_buffer, set_emission)

quetzal.io.importer.from_lines(lines, node_index=0, add_return=True, to_keep=[])

Import public transport lines to Quetzal format from geodataframe containing the pt lines (as one per row). Creates the dataframe links and nodes defined in the stepmodel class.

Parameters

• lines (geodataframe) – Name of DataFrame describing the alignements as LineSring in a geometry column.

• node_index (int, optional, default 0) – number on which to start indexing nodes

• add_return (bool, optional, default True) – if True, return lines are created. Use False if the two directions of the line are in the geodataframe.

• to_keep (list, optional, default []) – columns of lines geodataframe to keep in links

Returns

• links – Links of the public transport system and pt routes caracteristics. Each line of the geodataframe correspond to a section of a PT route between two nodes

• nodes – Public transport stations.

quetzal.io.importer.from_lines_and_stations(lines, stations, buffer=0.001, og_geoms=True, **kwargs)

Convert a set of alignement and station into a table of links.

Parameters

• lines (pd.DataFrame (or gpd.GeoDataFrame)) – DataFrame describing the alignements as LineSring in a geometry column.

• stations (pd.DataFrame (or gpd.GeoDataFrame)) – DataFrame describing the stations as Point in a geometry column.

• buffer (Float, optional) – Buffer for station detection near each alignement, by default 1e-3

• og_geoms (bool, optional) – If True (by default), the original geometry will be split between stations. If False, returned geometry will be a simplified geometry (st1 -> st2)

Returns

Table of links. As per, from_lines() output.

Return type

pd.DataFrame

quetzal.io.importer.links_and_nodes(linestring, node_index=0)

quetzal.io.importer.split_line_by_point(line, point, tolerance: float = 1e-09)