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Graph loads synthetic routes #25

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merged 23 commits into from Mar 3, 2018

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kuanb commented Mar 3, 2018

MVP feature response to #24

Given a GeoJSON with minimal attributes, generates additional nodes and edges that can be loaded/added to a network graph. This allows for simple, ad hoc additions to existing transit systems.

Draw a simple shape of a proposed bus route:
image

Add 3 properties:

  • headway (in seconds)
  • avg_speed (in kmph)
  • stop_dist (in meters)

And add it to your existing conditions network!

G = load_synthetic_network_as_graph(reference_geojson, existing_graph=G)

GIF showing a load in action:
5a9b0d517e275746334663

The entire workflow is dead simple:

import peartree as pt

# Load in your existing conditions
path = 'data/ac_transit.zip'
feed = pt.get_representative_feed(path)

# Convert it to a network graph with Peartree
start = 7*60*60  # 7:00 AM
end = 10*60*60  # 10:00 AM
G = pt.load_feed_as_graph(feed, start, end)

# Then load in your new GeoJSON of a proposed route
geojson_path = 'data/synthetic_example.geojson'
with open(geojson_path, 'r') as gjf:
    reference_geojson = json.load(gjf)
G = load_synthetic_network_as_graph(reference_geojson, existing_graph=G)

@kuanb kuanb changed the title Graph loads synthetic routes (WIP) (WIP) Graph loads synthetic routes Mar 3, 2018

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coveralls commented Mar 3, 2018

Coverage Status

Coverage increased (+2.2%) to 89.036% when pulling 9f77662 on kuanb-synthetic-routes into 3363f63 on master.

kuanb added some commits Mar 3, 2018

@kuanb kuanb changed the title (WIP) Graph loads synthetic routes Graph loads synthetic routes Mar 3, 2018

@kuanb kuanb merged commit 7dd6ff0 into master Mar 3, 2018

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coverage/coveralls Coverage increased (+0.2%) to 89.036%
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@kuanb kuanb deleted the kuanb-synthetic-routes branch Mar 3, 2018

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