Tkinter GUI Application Development Blueprints, Second Edition - Second Edition

Graphing with Tkinter

Tkinter is not a graphing tool. However, should you need to draw graphs with Tkinter, you can use the Canvas widget to draw graphs.

In this iteration, we will draw the following graphs:

• Pie chart (8.02_pie_chart.py)
• Bar graph (8.03_bar_graph.py)
• Scatter plot (8.04_scatter_plot.py)

The three graphs show up as follows:

Let's look at the pie chart first. You can easily create a pie chart in Tkinter using the Canvas widget's create_arc method.

The create_arc method has the following signature:

item_id = canvas.create_arc(x1, y1, x2, y2, option, ...)

Point (x1, y1) is the top-left corner and point (x2, y2) is the bottom-right ...