Mplcursors for hover labels in Matplotlib - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is mplcursors used for in matplotlib?

mplcursors is a tool that adds interactive hover labels to matplotlib plots, showing data values when you move the mouse over points.

beginner

How do you activate mplcursors on a scatter plot?

You import mplcursors and call mplcursors.cursor() on the scatter plot object to enable hover labels.

beginner

What kind of information can mplcursors display on hover?

It can display coordinates, custom text, or any data related to the point you hover over.

intermediate

Can mplcursors be customized to show specific text on hover?

Yes, you can customize the text shown by connecting to the 'add' event and setting the annotation text.

beginner

Why is mplcursors useful for data exploration?

It helps users quickly see exact data values without clicking or zooming, making plots more interactive and informative.

What Python package do you use to add hover labels in matplotlib plots?

A mplcursors

B seaborn

C pandas

D numpy

mplcursors is the package designed to add interactive hover labels to matplotlib plots.

Which function activates hover labels on a matplotlib plot?

A mplcursors.cursor()

B plt.show()

C plt.plot()

D mplcursors.hover()

mplcursors.cursor() is called on the plot object to enable hover labels.

What does mplcursors display when you hover over a point by default?

A The axis labels

B The point's coordinates

C The plot title

D Nothing

By default, mplcursors shows the coordinates of the hovered point.

Can you customize the hover text in mplcursors?

A No, it only shows coordinates

B Only by editing the source code

C Only by changing matplotlib settings

D Yes, by connecting to events and setting annotation text

You can customize hover text by handling the 'add' event and setting the annotation text.

Why is mplcursors helpful for beginners exploring data?

A It creates 3D plots

B It automatically cleans data

C It adds interactive hover labels to see data values easily

D It replaces matplotlib

mplcursors adds interactive hover labels, making it easier to explore data visually.

Explain how to add hover labels to a scatter plot using mplcursors.

Think about the steps from importing to activating the cursor.

Describe how you can customize the text shown when hovering over points with mplcursors.

Focus on event handling and annotation modification.