To plot data from .txt file using matplotlib, we can take the following steps −
- Set the figure size and adjust the padding between and around the subplots.
- Initialize empty lists for bar_names and bar_heights.
- Open a sample .txt file in read "r" mode and append to bar's name and height list.
- Make a bar plot.
- To display the figure, use show() method.
Example
from matplotlib import pyplot as plt
plt.rcParams["figure.figsize"] = [7.00, 3.50]
plt.rcParams["figure.autolayout"] = True
bar_names = []
bar_heights = []
for line in open("test_data.txt", "r"):
bar_name, bar_height = line.split()
bar_names.append(bar_name)
bar_heights.append(bar_height)
plt.bar(bar_names, bar_heights)
plt.show()"test_data.txt" contains the following data −
Javed 12 Raju 14 Rishi 15 Kiran 10 Satish 17 Arun 23
Output
It will produce the following output
