How to set Line Width for Step Plot in Matplotlib?

Matplotlib – Set Line Width for Step Plot

To set specific line width for Step Plot in Matplotlib, call matplotlib.pyplot.step() function, and pass required line width as float value for linewidth parameter of step() function.

The definition of matplotlib.pyplot.step() function with linewidth parameter is

step(x, y, linewidth=None)

Of course, there are other named parameters, but for simplicity, only linewidth parameter is given along with required x and y. The default value is None.

where

Parameter	Description
linewidth	The width of line in Step Plot. The parameter takes a float value. If 0, don’t draw steps.

Example

In the following program, we will draw a Step Plot with some sample data, and 3.0 as line width.

example.py

import matplotlib.pyplot as plt

# make data
x = [0, 1, 2, 3, 4, 5, 6, 7, 8]
y = [3, 4, 8, 2, 6, 5, 9, 4, 2]

#draw step plot
plt.step(x, y, linewidth=3.0)

#show plot as image
plt.show()

Output

Now, let us take another value of 10.0 for line width and draw the Step Plot.

example.py

import matplotlib.pyplot as plt

# make data
x = [0, 1, 2, 3, 4, 5, 6, 7, 8]
y = [3, 4, 8, 2, 6, 5, 9, 4, 2]

#draw step plot
plt.step(x, y, linewidth=3.0)

#show plot as image
plt.show()

Output

Conclusion

In this Matplotlib Tutorial, we learned how to set line width for Step Plot using Matplotlib PyPlot API.