Using python matplotlib package, you can draw various graphs.
This article introduces how to use matplotlib in WSL Ubuntu.
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TOC
Environment
- Windows 11
- WSL Ubuntu 22.04
- Python 3.10.6
Preparation
Updating and Installing Packages
Updating Ubuntu Packages
$ sudo apt update
$ sudo apt upgrade
Installing python3-pip
$ sudo apt install python3-pip
Installing matplotlib
$ pip install matplotlib
Drawing a Graph by matplotlib
Sample Code
Here is sample code that draw a graph for sin(x) in the range [-5.0, 5.0].
import math
import matplotlib.pyplot
xs = [0.1 * i - 5 for i in range(100)]
ys = [math.sin(x) for x in xs]
matplotlib.pyplot.plot(xs, ys)
matplotlib.pyplot.show()
Dealing with Errors
If you have not installed the backend for GUI, the runtime will show following error.
$ python3 main.py
/ANY_PATH/main.py:8: UserWarning: Matplotlib is currently using agg, which is a non-GUI backend, so cannot show the figure.
matplotlib.pyplot.show()
One of solutions is to install tkinter to Ubuntu.
$ sudo apt install python3-tk
Output
Run it again and you will get the graph of sin(x).
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