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Chrome Developer Tools at I/O 2016

About the I/O presentation and demo app

The Chrome DevTools team gave this presentation at Google I/O 2016.

The code for the exact demo app used in their presentation apparently isn't public, but was based on the progressive web app CodeLabs demo, the code for which is here, in the 'final' directory.

Progressive web apps have a responsive design and define a manifest.json, which gives URLs for launcher icons and the start URL for the app. With the manifest.json in place, users can add the web app to their device home screen and launch it directly. Another common feature of progressive web apps is their use of service workers to cache resources, which allows them to load quickly, cut down on network use, and potentially work offline.

flibbertigibbet / example.js
Created Mar 10, 2015
Example standalone Windshaft configuration
View example.js
var Windshaft = require('./lib/windshaft');
var _ = require('underscore');
var tablename = 'YOUR TABLENAME HERE';
var style = '#' + tablename + ' { ' +
'line-color: #EFF3FF; ' +
'line-width: 2; ' +
'} ';
flibbertigibbet /
Last active Apr 9, 2016
How to Use Torque Outside of a Full CartoDB Setup

What is Torque?

Torque is an open-source JavaScript library from CartoDB for time series map visualization.

How are Torque Visualizations Created?

  • The simplest way to create a Torque time-lapse animation is to upload the data to a CartoDB account,
#!/usr/bin/env python
""" Parse JSON real-time bus data from SEPTA:
from datetime import datetime, timedelta
import json
import requests
import sys
flibbertigibbet /
Last active Aug 29, 2015
Fetch updated GTFS feeds for Massachusetts
import requests, os, pickle, datetime, zipfile, subprocess, csv
class FeedFetcher():
def __init__(self, ddir=os.getcwd()):
self.ddir = ddir = {} # time checks for GTFS fetches
self.new_use = [] # list of new feeds successfully downloaded and validated
flibbertigibbet /
Created Jun 12, 2014
Build GeoJSON of CyclePhilly tracks from MySQL database
#!/usr/bin/env python
import pymysql
import geojson
from geojson import FeatureCollection, Feature, LineString, Point
dt_fmt = '%Y-%m-%d %H:%M'
db = pymysql.connect(host='', user='', passwd='', db='')
# - automatically extract translatable strings from storyboards and update strings files
# Based on by mikezang
flibbertigibbet /
Last active Jun 25, 2018
Recursively fetch files from an FTP server directory. Here, it's downloading all the zip files found in or beneath the parent directory.
#!/usr/bin/env python
from ftplib import FTP
from time import sleep
import os
my_dirs = [] # global
my_files = [] # global
curdir = '' # global
flibbertigibbet /
Created Dec 23, 2013
Download TIGER/Line data from the Census FTP server based on state FIPS code. Here, pulls EDGE data for four states.
#!/usr/bin/env python
from os import walk
from ftplib import FTP
from time import sleep
# 10 - DE
# 34 - NJ
# 36 - NY
# 42 - PA
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