Bar Charts

    x = ['Nuclear', 'Hydro', 'Gas', 'Oil', 'Coal', 'Biofuel']
    energy = [5, 6, 15, 22, 24, 8]

    import c3pyo as c3
    chart = c3.BarChart()
    chart.plot(energy, color='g', label='Energy from fuel source')
    chart.set_xticklabels(x)
    chart.ylabel('Energy Output (GJ)')
    chart.show()

    js_repos = [2716, 3121, 3651, 4718, 5399, 7736]
    python_repos = [1535, 1649, 2081, 2460, 2643, 4243]
    java_repos = [1631, 1893, 2227, 2629, 3132, 4483]
    php_repos = [1176, 1144, 1355, 1590, 1904, 2727]
    c_pp_repos = [666, 783, 883, 1091, 1260, 1749]
    months = ['Jan 2014', 'Jul 2014', 'Jan 2015', 'Jul 2015', 'Jan 2016', 'Jul 2016']

    import c3pyo as c3
    chart = c3.BarChart()
    chart.plot(js_repos, label='Javascript')
    chart.plot(python_repos, label='Python')
    chart.plot(java_repos, label='Java')
    chart.plot(php_repos, label='PHP')
    chart.plot(c_pp_repos, label='C++')
    chart.set_xticklabels(months)
    chart.ylabel('Active Git Repos')
    chart.show()