Created
September 18, 2015 05:06
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Used for creating histogram of thimble.io user signups
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#!/usr/bin/env python2 | |
import csv | |
from dateutil import tz | |
import dateutil.parser | |
import numpy as np | |
import pylab as P | |
from matplotlib.dates import MinuteLocator, HourLocator, DayLocator, DateFormatter | |
from matplotlib.dates import date2num, num2date | |
timestamps = [] | |
with open('Thimble.csv', 'rb') as csvfile: | |
# Thimble.csv field names: id,form_id,created_at,spam,email,name | |
csvreader = csv.reader(csvfile, delimiter=',') | |
# skip header row | |
csvreader.next() | |
for row in csvreader: | |
# signup_time = created_at field | |
signup_time = dateutil.parser.parse(row[2]) | |
from_zone = tz.gettz('UTC') | |
to_zone = tz.gettz('America/New_York') | |
utc = signup_time.replace(tzinfo=from_zone) | |
# strip all timezone data so we're showing NY time | |
timestamps.append(utc.astimezone(to_zone).replace(tzinfo=None)) | |
(hist, bin_edges) = np.histogram(date2num(timestamps), bins=48, density=False, normed=False) | |
width = bin_edges[1] - bin_edges[0] | |
fig = P.figure() | |
ax = fig.add_subplot(111) | |
ax.bar(bin_edges[:-1], hist, width=width) | |
ax.set_ylabel('New Subscribers') | |
ax.set_xlabel('MM/DD/YY - HH:MM (New York timezone)') | |
ax.set_title('New Subscribers per Hour') | |
ax.xaxis.set_major_locator(HourLocator(interval=2)) | |
ax.xaxis.set_major_formatter(DateFormatter('%D - %H:%M')) | |
fig.autofmt_xdate() | |
P.show() |
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