Python code to graph my tooth flossing habits using both RPy and Matplotlib.

FlossChart.py

import numpy as np
import pandas as pd
import matplotlib.pyplot as pyplot

import rpy2.robjects as robjects
from rpy2.robjects.packages import importr

data = pd.read_csv('FlossChart.csv', usecols = [0, 1], 
	parse_dates = True)
data['daynumber'] = data.date.map(lambda x: 
	pd.to_datetime(x).weekday()) 
data['weekday'] = data.date.map(lambda x: 
	pd.to_datetime(x).strftime("%a")) 

fractions = []
names = []
for day in range(0, 7):
	relevantrows = data[data['daynumber'] == day]
	names.append(relevantrows.weekday.iloc[1])
	fractions.append(relevantrows['flossed'].mean())

#First let's plot it using pyplot. 
pyplot.bar(np.arange(1, 8, 1), fractions)
pyplot.title('Flossing breakdown by day of the week')
pyplot.ylabel('Fraction of days flossed')
pyplot.xticks(np.arange(1.4, 8.4, 1), names)
pyplot.savefig('Flosschart-py.png')

#Now let's do it in RPy.
r = robjects.r
rfractions = robjects.FloatVector(fractions)
rdays = robjects.StrVector(names)
rfractions.names = rdays

grdevices = importr('grDevices')
grdevices.png(file = "Flosschart-r.png", 
	width = 512, height = 512)
robjects.r.barplot(rfractions, ylim = robjects.r.c(0, 1), 
	main = "Flossing breakdown by day of the week", 
	ylab = "Fraction of days flossed")
grdevices.dev_off()