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Discover how to properly display multiple line charts in your Tkinter GUI using Matplotlib. Avoid overlapping issues by organizing your plot correctly!
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Tkinter Not Displaying Line Chart? Here's How to Fix It!

Using Tkinter to create graphical user interfaces (GUIs) is a popular choice among Python developers. However, one common issue is that line charts do not display as expected. This can happen when attempts are made to draw multiple charts but only the last one appears. Let's explore why this occurs and how to solve the problem effectively.

Understanding the Problem

When using Matplotlib in conjunction with Tkinter, you might encounter a situation where only the final chart from a series of charts is displayed. This issue arises because new figures are created for each chart without properly managing the existing figures and axes.

Key Concepts in Matplotlib

Before diving into the solution, let's clarify some key concepts in Matplotlib:

Figure: Think of this as a blank canvas where you can create plots. You can draw multiple plots on a single figure.

Axes: This is where the data is visualized. Each axes has its own X and Y coordinates.

The main error here is the repeated creation of new figures in your drawing function, which results in the charts being drawn on top of each other rather than separately.

The Solution: Correcting Your Code

To properly display your line charts without them overlapping, you will need to modify both your calc and draw functions. Here's how to do it:

Step 1: Modify the calc Function

You need to create a single figure once and then utilize different axes for inserting different line charts.

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Update the draw Function

In the draw function, amend the code to accept both the figure and the specific axes where each line chart will be plotted.

[[See Video to Reveal this Text or Code Snippet]]

Wrapping Up

By implementing these modifications, your Tkinter application should now be able to display all line charts effectively without them overlapping. This not only enhances the clarity of the data represented but also improves the user experience.

Recap of Key Changes:

Create a single figure in the calc function.

Use multiple axes for plotting in the draw function.

Now you can enjoy a fully functioning line chart display within your Tkinter GUI, making your application even more dynamic and informative!

If you have any further questions or run into other issues while coding, feel free to ask. Happy coding!