[Solved] You want to create an interactive plot where a slider controls the frequency of a sine wave and a button... Which of the following code snippets correctly implements the button reset functionality? | Matplotlib

Matplotlib - Interactive Features

You want to create an interactive plot where a slider controls the frequency of a sine wave and a button resets the slider to its initial value. Which of the following code snippets correctly implements the button reset functionality?

Adef reset(event): slider.val = slider.valinit button.on_clicked(reset)

Bdef reset(event): slider.set_val(slider.valinit) button.on_clicked(reset)

Cdef reset(): slider.set_val(slider.valinit) button.on_clicked(reset)

Ddef reset(event): slider.valinit = 0 button.on_clicked(reset)

Step-by-Step Solution

Solution:

Step 1: Understand slider reset method
The slider widget provides set_val(value) method to update its value programmatically and trigger updates.
Step 2: Check event handler signature and usage
The reset function must accept an event argument and call slider.set_val(slider.valinit) to reset to initial value. def reset(event): slider.set_val(slider.valinit) button.on_clicked(reset) matches this.
Final Answer:
def reset(event): slider.set_val(slider.valinit) button.on_clicked(reset) -> Option B
Quick Check:
Use set_val(valinit) in event handler to reset slider [OK]

Quick Trick: Use slider.set_val(valinit) inside button callback [OK]

Common Mistakes:

Assigning slider.val directly without set_val()
Missing event parameter in callback
Changing valinit instead of resetting slider value

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Which of the following code snippets correctly implements the button reset functionality?

Step 1: Understand slider reset method

Step 2: Check event handler signature and usage

Final Answer:

Quick Check:

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