Coding⏱️ 2 min read📅 2026-06-03

How to Fix: How to update a plot in matplotlib

Update plot in matplotlib by clearing previous subplot and re-drawing the figure.

Quick Answer: Use `ax.clear()` to clear the previous subplot before redrawing the new data.

To update the plot in matplotlib without appending another plot to the figure, you need to clear the existing axes and create a new one. You can use the cla function from the matplotlib library for this purpose.

✅ Best Solution

Method 1: Clear Existing Axes and Create a New One

  1. Step 1: Call the cla function on the existing figure to clear the axes.

Step 2:

  1. Step 2: Create a new axes using the add_subplot function and assign it to the existing figure.

By following these steps, you can update the plot in matplotlib without appending another plot to the figure.

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