update shared_utils and segment_speed_utils / fix SHN segments

[tiffanychu90]

shared_utils / segment_speed_utils

• Feature Request: Update shared_utils after mart_transit_database changes #1282
• update schedule_rt_utils for how to grab caltrans_district, which is no longer part of dim_organizations and is part of dim_county_geography.
  • notebook to check results -- note that FlixBus is the only one that moves from D7 to D8, other organizations match previous results
• to prevent circular imports with segment_speed_utils, move some of the functions there into shared_utils. assume that shared_utils is installed before segment_speed_utils. shared_utils holds general use functions, where as segment_speed_utils supports the GTFS analytics pipeline.
  • create shared_utils.geo_utils to hold geospatial related utility functions...calitp-data-analysis too unwieldy to update quickly
  • segment_speed_utils.wrangle_shapes functions get moved into other geo_utils or segment_calcs references updated
  • segment_speed_utils.time_helpers moves over into shared_utils, references updated

shared_data

• postmile segments sometimes draw straight lines, which don't follow roads
• fix this by adopting an idea once used for speeds work, where we subset into the relevant coordinates of a line and use that to create the highway segment. this better follows the curves in the road
  • use nearest_snap from speeds pipeline to cut segments in shared_data.py
• these segments can be used for vulnerability risk analysis work
• TODO: investigate the empty geometries are created
  • how we order the postmiles to find the current postmile and subsequent postmile is important
  • SHN has several columns to uniquely identify a linestring route, routes (suffix), pmrouteid, begin/end postmile, begin/end odometer. avoiding multilinestrings because we can't segment those nicely.
  • are empty geometries simply at the endpoints? is it ok to be empty?
  • check whether we can adjust the grouping to avoid as-the-crow-flies-straight-lines, while maintaining segments that hug curves in the road
• Research Request - Map PeMS data #1233

[github-actions]

nbviewer URLs for impacted notebooks:

• _shared_utils/shared_utils/add_dim_county_geog.ipynb

[github-actions]

nbviewer URLs for impacted notebooks:

• _shared_utils/shared_utils/add_dim_county_geog.ipynb

[github-actions]

nbviewer URLs for impacted notebooks:

• _shared_utils/shared_utils/add_dim_county_geog.ipynb

[github-actions]

nbviewer URLs for impacted notebooks:

• _shared_utils/shared_utils/add_dim_county_geog.ipynb