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How can you combine mplcursors with a matplotlib bar chart to show the bar height on hover?

hard📝 Application Q9 of 15
Matplotlib - Interactive Features
How can you combine mplcursors with a matplotlib bar chart to show the bar height on hover?
ACall mplcursors.cursor() without arguments and rely on default labels
BCreate a cursor on the bar container and connect 'add' event to set annotation text with bar height
CAdd text labels manually on bars before calling mplcursors
DUse plt.text() inside a loop after mplcursors to show heights
Step-by-Step Solution
Solution:
  1. Step 1: Understand bar chart structure

    Bars are in a container; cursor must be created on this container.
  2. Step 2: Use event connection to customize hover text

    Connect 'add' event to set annotation text to the bar's height value.
  3. Final Answer:

    Create a cursor on the bar container and connect 'add' event to set annotation text with bar height -> Option B
  4. Quick Check:

    Custom hover text on bars via event connection [OK]
Quick Trick: Use cursor on bar container + 'add' event for bar heights [OK]
Common Mistakes:
  • Relying on default labels without customization
  • Adding static text instead of hover labels

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