How Can I Display Values on a Horizontal Bar Plot in Matplotlib?-Python Tutorial-php.cn

How Can I Display Values on a Horizontal Bar Plot in Matplotlib?

Mary-Kate Olsen

Release： 2024-11-27 17:16:12

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How Can I Display Values on a Horizontal Bar Plot in Matplotlib?

Displaying Values on Horizontal Bars

To display the value of each bar in a horizontal bar plot, you can use the following method:

for i, v in enumerate(y):
    ax.text(v + 3, i, str(v), color='blue', fontweight='bold', verticalalignment='center')

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Explanation:

Iterate through the y-values.
For each y-value, plot text to the right of the bar by adding 3 to the y-value.
Use the index of each y-value as the y-coordinate for the text.
Set the text to be the y-value as a string.
Style the text as desired (e.g., blue color, bold weight, centered vertically).

Example:

# Update the x and y values from the original example
x = [u'INFO', u'CUISINE', u'TYPE_OF_PLACE', u'DRINK', u'PLACE', u'MEAL_TIME', u'DISH', u'NEIGHBOURHOOD']
y = [160, 167, 137, 18, 120, 36, 155, 130]

fig, ax = plt.subplots()
width = 0.75  # the width of the bars
ind = np.arange(len(y))  # the x locations for the groups
ax.barh(ind, y, width, color="blue")
ax.set_yticks(ind + width / 2)
ax.set_yticklabels(x, minor=False)
plt.title('title')
plt.xlabel('x')
plt.ylabel('y')

# Add code to display the values on the bars
for i, v in enumerate(y):
    ax.text(v + 3, i, str(v), color='blue', fontweight='bold', verticalalignment='center')

# Display the plot
plt.show()

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This will produce a horizontal bar plot with the values displayed on top of each bar.

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