The Data Viz Wiz: Introducing Matplotlib

1.py

import matplotlib.pyplot as plt

fig, ax = plt.subplots();
plt.show()

# equivalents to above - different ways of creating an axes
# 1a -
# ax = plt.subplot()
# plt.show()
# 1b -
# fig = plt.figure()
# ax = fig.add_subplot()
# plt.show()
# 1c -
# fig = plt.figure()
# ax = fig.add_subplot(1, 1, 1)
# plt.show()

# 2a -
# ax = plt.subplots()
# plt.show()
# 2b - 
# fig = plt.figure()
# ax = fig.subplots()
# plt.show()
# 2c - 
# fig = plt.figure()
# ax = fig.subplots(1, 1)
# plt.show()
# 2d - 
# fig = plt.figure()
# ax = fig.subplots(nrows=1, ncols=1)
# plt.show()

# 3a -
# ax = plt.axes()
# plt.show()
# 3b - 
# ax = plt.axes([0.1, 0.1, 0.8, 0.8])
# plt.show()
# 3c -
# fig = plt.figure()
# ax = fig.add_axes([0.1, 0.1, 0.8, 0.8])
# plt.show()

2.py

import matplotlib.pyplot as plt
import pandas as pd

lagos_average_monthly_temperature_dict = {
    'month':['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep','Oct', 'Nov', 'Dec'],
    'temperature':[40.2, 41.9, 47.0, 50.1, 57.9, 62.5, 63.8, 61.9, 54.3, 47.4, 40.5, 42.8]
}

lagos_average_monthly_temperature = pd.DataFrame(lagos_average_monthly_temperature_dict)

fig, ax = plt.subplots();
ax.plot(lagos_average_monthly_temperature['month'], lagos_average_monthly_temperature['temperature'])
plt.show()

2_tabular.md

lagos_monthly_average_temperature table

month	temperature
Jan	40.2
Feb	41.9
Mar	47.0
Apr	50.1
May	57.9
Jun	62.5
Jul	63.8
Aug	61.9
Sep	54.8
Oct	47.4
Nov	40.5
Dec	42.8

3.py

import matplotlib.pyplot as plt
import pandas as pd

lagos_average_monthly_temperature_dict = {
    'month':['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep','Oct', 'Nov', 'Dec'],
    'temperature':[40.2, 41.9, 47.0, 50.1, 57.9, 62.5, 63.8, 61.9, 54.3, 47.4, 40.5, 42.8]
}
abuja_average_monthly_temperature_dict = {
    'month':['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep','Oct', 'Nov', 'Dec'],
    'temperature':[42.2, 43.9, 48.0, 52.1, 59.9, 64.5, 66.8, 63.9, 50.3, 49.4, 42.5, 44.8]
}

lagos_average_monthly_temperature = pd.DataFrame(lagos_average_monthly_temperature_dict)
abuja_average_monthly_temperature = pd.DataFrame(abuja_average_monthly_temperature_dict)

fig, ax = plt.subplots();
ax.plot(lagos_average_monthly_temperature['month'], lagos_average_monthly_temperature['temperature'])
ax.plot(abuja_average_monthly_temperature['month'], abuja_average_monthly_temperature['temperature'])
plt.show()

4.py

import matplotlib.pyplot as plt
import pandas as pd

lagos_average_monthly_temperature_dict = {
    'month':['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep','Oct', 'Nov', 'Dec'],
    'temperature':[40.2, 41.9, 47.0, 50.1, 57.9, 62.5, 63.8, 61.9, 54.3, 47.4, 40.5, 42.8]
}

lagos_average_monthly_temperature = pd.DataFrame(lagos_average_monthly_temperature_dict)

fig, ax = plt.subplots();
ax.plot(lagos_average_monthly_temperature['month'], lagos_average_monthly_temperature['temperature'],
        marker="8", markersize=8, markerfacecolor="yellow", markeredgewidth=2, markeredgecolor="blue",
        linestyle=":", linewidth=2, color="red")

ax.set_xlabel("Date (months)")
ax.set_ylabel("Average temperature (Fahrenheit degrees)")
ax.set_title("Temperature Trends in Lagos")
plt.show()

5.py

import matplotlib.pyplot as plt
import pandas as pd

lagos_average_monthly_temperature_dict = {
    'month':['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep','Oct', 'Nov', 'Dec'],
    'temperature':[40.2, 41.9, 47.0, 50.1, 57.9, 62.5, 63.8, 61.9, 54.3, 47.4, 40.5, 42.8]
}
abuja_average_monthly_temperature_dict = {
    'month':['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep','Oct', 'Nov', 'Dec'],
    'temperature':[42.2, 43.9, 48.0, 52.1, 59.9, 64.5, 66.8, 63.9, 50.3, 49.4, 42.5, 44.8]
}

lagos_average_monthly_temperature = pd.DataFrame(lagos_average_monthly_temperature_dict)
abuja_average_monthly_temperature = pd.DataFrame(abuja_average_monthly_temperature_dict)

fig, ax = plt.subplots();
ax.plot(lagos_average_monthly_temperature['month'], lagos_average_monthly_temperature['temperature'],
        marker="8", markersize=8, markerfacecolor="yellow", markeredgewidth=2, markeredgecolor="blue",
        linestyle=":",  color='red', label="Lagos")
ax.plot(abuja_average_monthly_temperature['month'], abuja_average_monthly_temperature['temperature'],
        marker=".", markersize=8, markerfacecolor="yellow", markeredgewidth=2, markeredgecolor="blue",
        color="darkgreen", label="Abuja")

ax.set_xlabel("Date (months)")
ax.set_ylabel("Average temperature (Fahrenheit degrees)")
ax.set_title("Temperature Patterns across Cities")
ax.legend()
plt.show()

6.py

import matplotlib.pyplot as plt
import pandas as pd

lagos_average_monthly_temperature_dict = {
    'month': ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
    'temperature': [40.2, 41.9, 47.0, 50.1, 57.9, 62.5, 63.8, 61.9, 54.3, 47.4, 40.5, 42.8]
}
abuja_average_monthly_temperature_dict = {
    'month': ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'],
    'temperature': [42.2, 43.9, 48.0, 52.1, 59.9, 64.5, 66.8, 63.9, 50.3, 49.4, 42.5, 44.8]
}

lagos_average_monthly_temperature = pd.DataFrame(lagos_average_monthly_temperature_dict)
abuja_average_monthly_temperature = pd.DataFrame(abuja_average_monthly_temperature_dict)

fig, ax = plt.subplots(2, 1, sharey=True)
ax[0].plot(lagos_average_monthly_temperature['month'], lagos_average_monthly_temperature['temperature'])
ax[1].plot(abuja_average_monthly_temperature['month'], abuja_average_monthly_temperature['temperature'], color="r")

ax[0].set_ylabel("Average temperature")
ax[1].set_ylabel("Average temperature")
ax[1].set_xlabel("Date (months)")
ax[0].set_title("Lagos average temperature (Fahrenheit degrees)")
ax[1].set_title("Abuja average temperature (Fahrenheit degrees)")

plt.tight_layout()  # same as fig.tight_layout()
plt.show()

# Examples where the ax object is an array of axes object
# 1a -
# fig = plt.figure()
# ax = fig.subplots(2, 2)
# ax[0, 0].plot()
# ax[0, 1].plot()
# ax[1, 0].plot()
# ax[1, 1].plot()
# plt.show()
# 1b -
# fig = plt.figure()
# ax = fig.subplots(2, 2)
# ax.flat[0].plot()
# ax.flat[1].plot()
# ax.flat[2].plot()
# ax.flat[3].plot()
# plt.show()
# 1c - 
# fig = plt.figure()
# ((ax1, ax2), (ax3, ax4)) = fig.subplots(2, 2)
# ax1.plot()
# ax2.plot()
# ax3.plot()
# ax4.plot()
# plt.show()

# 2 - 
# fig = plt.figure()
# ax1 = fig.add_subplot(221)
# ax2 = fig.add_subplot(222)
# ax3 = fig.add_subplot(223)
# ax4 = fig.add_subplot(224)
# plt.show()

# 3 - 
# fig = plt.figure()
# ax1 = fig.add_axes([0.1, 0.6, 0.3, 0.3])
# ax2 = fig.add_axes([0.6, 0.6, 0.3, 0.3])
# ax3 = fig.add_axes([0.1, 0.1, 0.3, 0.3])
# ax4 = fig.add_axes([0.6, 0.1, 0.3, 0.3])
# plt.show()