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How to produce a barcode in Matplotlib?
To produce a barcode in Matplotlib, we can take the following steps −
- Set the figure size and adjust the padding between and around the subplots.
- Make a list of binary numbers, i.e., 0s and 1s.
- Create a new figure or activate an existing figure with dpi=100
- Add an axes to the figure.
- Turn off the axes.
- Use imshow() method to plot the data from step 2.
- To display the figure, use show() method.
Example
import matplotlib.pyplot as plt import numpy as np plt.rcParams["figure.figsize"] = [7.50, 3.50] plt.rcParams["figure.autolayout"] = True code = np.array([ 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1]) fig = plt.figure(dpi=100) ax = fig.add_axes([0, 0, 1, 1]) ax.set_axis_off() ax.imshow(code.reshape(1, -1), cmap='binary', aspect='auto', interpolation='nearest') plt.show()
Output
Updated on: 18-Jun-2021
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