You want to highlight a bar in a bar chart when clicked using pick events. Which approach correctly enables picking on bars and connects the event handler?

hard📝 Application Q8 of 15

Matplotlib - Interactive Features

ASet picker=False on bars and connect with fig.connect('pick_event', handler)

BSet picker=True on bars and connect with fig.canvas.mpl_connect('pick_event', handler)

CSet picker=0 on bars and use plt.connect('pick_event', handler)

DNo need to set picker; just connect the event handler

Step-by-Step Solution

Solution:

Step 1: Enable picking on bars
Bars must have picker=True or a numeric tolerance to respond to pick events.
Step 2: Connect the pick event handler correctly
Use fig.canvas.mpl_connect with 'pick_event' and the handler function.
Final Answer:
Set picker=True on bars and connect with fig.canvas.mpl_connect('pick_event', handler) -> Option B
Quick Check:
Enable picker and connect via fig.canvas.mpl_connect [OK]

Quick Trick: Enable picker=True and connect with fig.canvas.mpl_connect [OK]

Common Mistakes:

Not setting picker or setting it to False
Using wrong connect method or event name

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More Matplotlib Quizzes

You want to highlight a bar in a bar chart when clicked using pick events. Which approach correctly enables picking on bars and connects the event handler?

Step 1: Enable picking on bars

Step 2: Connect the pick event handler correctly

Final Answer:

Quick Check:

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