Bug summary

When a contour plot is made and a legend is added, the marker for the contour plot is not shown.

Code for reproduction

importmatplotlib.pyplotaspltimportnumpyasnpdata=np.random.randint(100,size=(100,100))plt.figure()cs=plt.contour(data,levels=[50])cs.collections[0].set_label('label')plt.legend()plt.show()

Actual outcome

Expected outcome

In the area for the legend, next to the label for the legend, there should a solid purple line. Solid purple line would represent the lines in the main plot for that contour.

Additional information

No response

Operating system

Rocky Linux release 8.5 (Green Obsidian)

Matplotlib Version

3.5.2

Matplotlib Backend

module://matplotlib_inline.backend_inline

Python version

Python 3.9.13

Jupyter version

3.4.3

Installation

conda