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import sys
import json
import collections

FILENAME = sys.argv[1]
KEY = sys.argv[2]

with open(FILENAME) as f:
  data = json.load(f)

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Transitland Frequency Visualization

Accompanies blog post: Transit dimensions: Transitland Schedule API

The frequency.py script:

• Fetches all trips on a given date, between a start time and end time, inside of a bounding box
• Calculates the number of connections between every stop
• Uses a colormap and line width to show more frequent service
• Outputs a GeoJSON map as output.geojson

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# Find the minimum distance between a point and a line segment.
# Ported from C/JavaScript implementation by Grumdrig
# http://stackoverflow.com/questions/849211/shortest-distance-between-a-point-and-a-line-segment
import math

class Point(object):
  def __init__(self, x, y):
    self.x = float(x)
    self.y = float(y)

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