## Step 1: Download your Google Location History

Google makes this process very easy. Go here to [download your location history data](https://www.google.com/settings/takeout) and unzip it.

# Import pandas
import pandas as pd

# Import matplotlib and Basemap
import matplotlib.pyplot as plt
from mpl_toolkits.basemap import Basemap

# Import decimal
import decimal

# Set iPython to display visualization inline
%matplotlib inline

# Create a dataframe from the json file in the filepath
raw = pd.io.json.read_json('/Users/chrisralbon/Downloads/Location History/LocationHistory.json')

# View the last five rows of the dataframe
raw.tail()

# Expand the locations column into a dataframe
# This lets us move down one level in the json structure
df = raw['locations'].apply(pd.Series)

# View the last five rows of the dataframe
df.tail()

# Create a list from the latitude column
lats = df['latitudeE7']

# Create a list from the longitude column
lons = df['longitudeE7']

# Multiply both lists by -E7 to move the decimal point
# to the correct location
lats = lats * 0.0000001
lons = lons * 0.0000001

# View the last five list elements
list(lons[-5:])

# Set the precison of getcontext
decimal.getcontext().prec = 6

# Convert the float into a decimal string, then put it back into float
lats = [float(decimal.Decimal("%.6f" % e)) for e in lats]
lons = [float(decimal.Decimal("%.6f" % e)) for e in lons]

# View the last five list elements
# to check the decimal function worked
list(lons[-5:])

# Create a figure of size (i.e. pretty big)
fig = plt.figure(figsize=(20,10))

# Create a map, using the Gall–Peters projection, 
map = Basemap(projection='gall', 
              # with low resolution,
              resolution = 'h', 
              # And threshold 100000
              area_thresh = 100000.0,
              llcrnrlon=-0.186768,
              llcrnrlat=51.454007,
              urcrnrlon=-0.061798,
              urcrnrlat=51.530960)

# Draw the coastlines on the map
map.drawcoastlines()

# Draw country borders on the map
map.drawcountries()

# Fill the land with grey
map.fillcontinents(color = '#888888')

# Draw the map boundaries
map.drawmapboundary(fill_color='#f4f4f4')

# Define our longitude and latitude points
x,y = map(lons, lats)

# Plot them using round markers of size 6
map.plot(x, y, 'ro', markersize=6)
 
# Show the map
plt.show()