Legend placement options in Matplotlib - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of a legend in a matplotlib plot?

A legend explains what each color, line, or marker in the plot represents, making the plot easier to understand.

beginner

Name three common locations where a legend can be placed in a matplotlib plot.

Common legend locations include 'upper right', 'upper left', and 'lower center'.

intermediate

How do you place a legend outside the plot area in matplotlib?

Use the 'bbox_to_anchor' parameter with 'loc' in plt.legend() to position the legend outside the plot area.

beginner

What does the 'loc' parameter control in matplotlib's legend function?

The 'loc' parameter controls the anchor point of the legend box relative to the plot or the bounding box.

intermediate

Explain the difference between 'best' and 'center left' legend locations in matplotlib.

'best' lets matplotlib automatically place the legend where it overlaps the least with the plot data, while 'center left' places the legend centered vertically on the left side of the plot.

Which parameter in plt.legend() sets the legend location?

A place

B position

C loc

D location

The 'loc' parameter is used to specify the legend location in matplotlib.

What does setting loc='best' do for the legend placement?

A Automatically finds the best location to avoid overlapping data

B Centers legend at the bottom

C Places legend outside the plot

D Places legend at the top right corner

'best' lets matplotlib choose the location with the least overlap with plot elements.

How can you place the legend outside the plot area on the right side?

A loc='right'

B loc='outside'

C bbox_to_anchor=(0, 0) with loc='upper left'

D bbox_to_anchor=(1, 0.5) with loc='center left'

Using bbox_to_anchor with loc='center left' places the legend outside on the right.

Which of these is NOT a valid loc value for legend placement?

A middle left

B lower center

C upper right

D best

'middle left' is not a valid loc value; the correct term is 'center left'.

What does bbox_to_anchor control in legend placement?

A The font size of the legend

B The exact position of the legend box

C The color of the legend background

D The number of legend columns

bbox_to_anchor sets the precise position of the legend box relative to the axes.

Describe how to place a legend outside the plot area on the right side using matplotlib.

Think about combining loc with bbox_to_anchor to move the legend.

List and explain at least three different legend placement options available in matplotlib.

Consider both fixed positions and automatic placement.