Nikhil VJ answerquest

OSRM North America route server on EC2

Overview

OSRM route server is an extremely useful tool for getting the driving distance/time through multiple locations. The route server requires data that has to be downloaded and processsed before it can be used to serve routes from.

Processing OSRM data for large region like North America can be a real challenge due to memory and disk size requirements. It's also really time consuming. If you cut and try from scratch, you will repeatedly run into some constraints and fail after hours of running.

The following are summary notes from trying this with eventual success.

Download Audio from YouTube

-i - ignore errors

-c - continue

-t - use video title as file name

--extract-audio - extract audio track

sudo apt-get install python3-setuptools
sudo easy_install3 pip

Click to get a route and retrieve weather information at a given interval along the way. Currently displaying wind speed.

Includes superfluous data point extrusions.

	@echo off

	SET CLIENT_ID=
	SET CLIENT_SECRET=
	SET YOUTUBE_KEY=

	node PATH\TO\SCRIPT\spotify-dl.js %1

	rem %1 track link
	rem this file may be added to your env to quickly execute the script anywhere on your pc.

	#
	# ref https://github.com/tebeka/pythonwise/blob/master/docker-miniconda/Dockerfile
	#
	# miniconda vers: http://repo.continuum.io/miniconda
	# sample variations:
	# Miniconda3-latest-Linux-armv7l.sh
	# Miniconda3-latest-Linux-x86_64.sh
	# Miniconda3-py38_4.10.3-Linux-x86_64.sh
	# Miniconda3-py37_4.10.3-Linux-x86_64.sh
	#

	def total_seconds(timedelta):
	"""Convert timedeltas to seconds

	In Python, time differences can take many formats. This function can take
	timedeltas in any format and return the corresponding number of seconds, as
	a float.

	Beware! Representing timedeltas as floats is not as precise as representing
	them as a timedelta object in datetime, numpy, or pandas.

	(Dijkstra and plain A* are generally not included here as there are thousands of
	implementations, though I've made an exception for rare Ruby and Crystal versions,
	and for Thor, Mapzen's enhanced A*. )

	A* Ruby https://github.com/georgian-se/shortest-path
	A* Crystal https://github.com/petoem/a-star.cr
	A* (bidirectional with shortcuts) C++ https://github.com/valhalla/valhalla
	NBA* JS https://github.com/anvaka/ngraph.path
	NBA* Java https://github.com/coderodde/GraphSearchPal
	NBA* Java https://github.com/coderodde/FunkyPathfinding

	>>> import charm.proto.hex_pb_signed_pb2
	>>> s = charm.proto.hex_pb_signed_pb2.Signed()
	>>> import charm.proto.hex_pb_package_pb2
	>>> pkg = charm.proto.hex_pb_package_pb2.Package()
	>>> pkgbuf = None
	>>> with open("test/gisla.unc") as f:
	... pkgbuf = f.read()
	...
	>>> s.ParseFromString(pkgbuf)
	>>> s.payload

	<!DOCTYPE html>
	<html>
	<head>
	<title>Drawing tools</title>
	<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
	<meta charset="utf-8">

	<style>
	/* Always set the map height explicitly to define the size of the div
	* element that contains the map. */