Often times, you may need to place matplotlib charts on a tkinter GUI. This feature is especially useful for users who deal with front-end GUIs.
And so, in this tutorial, I’ll show you the steps to place matplotlib charts on a tkinter GUI.
More specifically, I’ll show you how to embed the following charts on your GUI:
- Bar
- Line
- Scatter
By the end of this tutorial, you’ll be able to create the following tkinter GUI with the embedded charts:
Let’s now review the steps to achieve this goal.
Steps to place matplotlib charts on a tkinter GUI
Step 1: Prepare the datasets for the charts
Firstly, you’ll need to prepare the datasets to be used as the input for the charts.
For illustration purposes, I created the following 3 datasets for our charts:
Data for the Bar Chart
| Country | GDP_Per_Capita |
| US | 45000 |
| CA | 42000 |
| GER | 52000 |
| UK | 49000 |
| FR | 47000 |
Data for the Line Chart
| Year | Unemployment_Rate |
| 1920 | 9.8 |
| 1930 | 12 |
| 1940 | 8 |
| 1950 | 7.2 |
| 1960 | 6.9 |
| 1970 | 7 |
| 1980 | 6.5 |
| 1990 | 6.2 |
| 2000 | 5.5 |
| 2010 | 6.3 |
Data for the Scatter Diagram
| Interest_Rate | Stock_Index_Price |
| 5 | 1500 |
| 5.5 | 1520 |
| 6 | 1525 |
| 5.5 | 1523 |
| 5.25 | 1515 |
| 6.5 | 1540 |
| 7 | 1545 |
| 8 | 1560 |
| 7.5 | 1555 |
| 8.5 | 1565 |
Step 2: Create the DataFrames in Python
Next, you may utilize pandas DataFrame to capture the above data in Python.
Here is a template that you may use to create a DataFrame in Python:
from pandas import DataFrame
data = {'First Column Name': ['First value', 'Second value',…],
'Second Column Name': ['First value', 'Second value',…],
…
}
df = DataFrame(data, columns = ['First Column Name','Second Column Name',…])
For our example, the datasets can be captured as follows:
from pandas import DataFrame
data1 = {'Country': ['US','CA','GER','UK','FR'],
'GDP_Per_Capita': [45000,42000,52000,49000,47000]
}
df1 = DataFrame(data1,columns=['Country','GDP_Per_Capita'])
print (df1)
data2 = {'Year': [1920,1930,1940,1950,1960,1970,1980,1990,2000,2010],
'Unemployment_Rate': [9.8,12,8,7.2,6.9,7,6.5,6.2,5.5,6.3]
}
df2 = DataFrame(data2,columns=['Year','Unemployment_Rate'])
print (df2)
data3 = {'Interest_Rate': [5,5.5,6,5.5,5.25,6.5,7,8,7.5,8.5],
'Stock_Index_Price': [1500,1520,1525,1523,1515,1540,1545,1560,1555,1565]
}
df3 = DataFrame(data3,columns=['Interest_Rate','Stock_Index_Price'])
print (df3)
If you run the above code, you’ll get these 3 DataFrames:
You may want to check the following source that further explains how to create pandas DataFrame to capture your data in Python.
Step 3: Create the GUI
Next, you’ll need to create the tkinter GUI, so that you can place the charts on it.
To begin, you’ll need to import the tkinter and matplotlib modules as follows:
import tkinter as tk import matplotlib.pyplot as plt from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
Then, add the charts to the GUI by using this generic template:
figure = plt.Figure(figsize=(6,5), dpi=100)
ax = figure.add_subplot(111)
chart_type = FigureCanvasTkAgg(figure, root)
chart_type.get_tk_widget().pack()
df = df[['First Column','Second Column']].groupby('First Column').sum()
df.plot(kind='Chart Type such as bar', legend=True, ax=ax)
ax.set_title('The Title for your chart')
Slight variations may be applied to the above template, depending on the chart that you need to plot.
Putting everything together, your full Python code would look like this:
import tkinter as tk
from pandas import DataFrame
import matplotlib.pyplot as plt
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
data1 = {'Country': ['US','CA','GER','UK','FR'],
'GDP_Per_Capita': [45000,42000,52000,49000,47000]
}
df1 = DataFrame(data1,columns=['Country','GDP_Per_Capita'])
data2 = {'Year': [1920,1930,1940,1950,1960,1970,1980,1990,2000,2010],
'Unemployment_Rate': [9.8,12,8,7.2,6.9,7,6.5,6.2,5.5,6.3]
}
df2 = DataFrame(data2,columns=['Year','Unemployment_Rate'])
data3 = {'Interest_Rate': [5,5.5,6,5.5,5.25,6.5,7,8,7.5,8.5],
'Stock_Index_Price': [1500,1520,1525,1523,1515,1540,1545,1560,1555,1565]
}
df3 = DataFrame(data3,columns=['Interest_Rate','Stock_Index_Price'])
root= tk.Tk()
figure1 = plt.Figure(figsize=(6,5), dpi=100)
ax1 = figure1.add_subplot(111)
bar1 = FigureCanvasTkAgg(figure1, root)
bar1.get_tk_widget().pack(side=tk.LEFT, fill=tk.BOTH)
df1 = df1[['Country','GDP_Per_Capita']].groupby('Country').sum()
df1.plot(kind='bar', legend=True, ax=ax1)
ax1.set_title('Country Vs. GDP Per Capita')
figure2 = plt.Figure(figsize=(5,4), dpi=100)
ax2 = figure2.add_subplot(111)
line2 = FigureCanvasTkAgg(figure2, root)
line2.get_tk_widget().pack(side=tk.LEFT, fill=tk.BOTH)
df2 = df2[['Year','Unemployment_Rate']].groupby('Year').sum()
df2.plot(kind='line', legend=True, ax=ax2, color='r',marker='o', fontsize=10)
ax2.set_title('Year Vs. Unemployment Rate')
figure3 = plt.Figure(figsize=(5,4), dpi=100)
ax3 = figure3.add_subplot(111)
ax3.scatter(df3['Interest_Rate'],df3['Stock_Index_Price'], color = 'g')
scatter3 = FigureCanvasTkAgg(figure3, root)
scatter3.get_tk_widget().pack(side=tk.LEFT, fill=tk.BOTH)
ax3.legend(['Stock_Index_Price'])
ax3.set_xlabel('Interest Rate')
ax3.set_title('Interest Rate Vs. Stock Index Price')
root.mainloop()
Step 4: Run the Python code
Run the above Python code, and you’ll see the matplotlib charts placed on the GUI:
That’s it! For additional information about the tkinter module, you may check the tkinter documentation.