Matplotlib JoinStyle for Beginners

Introduction

This lab provides a step-by-step guide on how to use the JoinStyle module of Matplotlib in Python. JoinStyle controls how Matplotlib draws the corners where two different line segments meet. This lab is designed for users who are new to Matplotlib.

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Skills Graph

Importing Required Libraries

In order to use the JoinStyle module, we need to import it from the matplotlib._enums library. We also need to import the pyplot module from matplotlib to create a graph.

import matplotlib.pyplot as plt
from matplotlib._enums import JoinStyle

Creating a Graph

To create a graph, we first need to define the data that we want to plot. In this example, we will use the numpy library to generate some sample data.

import numpy as np

x = np.linspace(0, 10, 1000)
y = np.sin(x)

Next, we create a new figure and axis using plt.subplots(). We will set the x and y limits of the graph and then plot the data using plot().

fig, ax = plt.subplots()
ax.set_xlim([0, 10])
ax.set_ylim([-1.2, 1.2])
ax.plot(x, y)

Setting JoinStyle

We can set the JoinStyle of the line using the set_solid_joinstyle() method of the Line2D object. We will create a new line object and set its join style to JoinStyle.bevel.

line = ax.lines[0]
line.set_solid_joinstyle(JoinStyle.bevel)

Displaying the Graph

Finally, we display the graph using plt.show().

plt.show()

Summary

This lab provided a step-by-step guide on how to use the JoinStyle module of Matplotlib in Python. We learned how to import required libraries, create a graph, set the JoinStyle, and display the graph. By adjusting the join style, we can change the appearance of corners where two different line segments meet in a graph.