Why are My Seaborn Heatmaps Truncating the First and Last Rows?

Truncated Heatmap Rows: Pitfalls with Matplotlib and Seaborn

Question:

Users have observed that the first and last rows of heatmaps generated using Seaborn are cut in half. This issue persists even when running minimal code examples, as demonstrated below:

import pandas as pd
import seaborn as sns
import matplotlib.pyplot as plt

data = pd.read_csv('https://raw.githubusercontent.com/resbaz/r-novice-gapminder-files/master/data/gapminder-FiveYearData.csv')
plt.figure(figsize=(10,5))
sns.heatmap(data.corr())
plt.show()

Answer:

Unfortunately, matplotlib 3.1.1 has been found to be incompatible with Seaborn heatmaps and inverted axes with fixed ticks. To rectify this issue:

• Revert to Matplotlib 3.1.0: Downgrade to a prior version of Matplotlib that does not exhibit this bug.
• Upgrade to Matplotlib 3.1.2 or Higher: Install the latest version of Matplotlib, which has resolved the issue.
• Set Heatmap Limits Manually: Use the following code to manually set the y-axis limits:

ax.set_ylim(bottom, top) # set the ylim to bottom, top

The above is the detailed content of Why are My Seaborn Heatmaps Truncating the First and Last Rows?. For more information, please follow other related articles on the PHP Chinese website!