Bug summary

When setting the linewidths parameter in scatter there is some type of scaling applied which produces unexpected results. The inner diameter of the linewidth/contour is not fitted to the outer diameter of the marker, when saving the plot as a png. When viewing the plot as html the linewidth is attached to the marker but scales oddly.

Code for reproduction

import matplotlib.pyplot as plt
pos = {
        1: [-0.64773329, -0.61381879],
        2: [-0.08689388, -0.64267512],
        3: [0.11388331, -0.15139483],
        4: [0.13119441, 0.40788873],
        5: [0.48954945, 1.0],
        6: [0.7, 1.0]

    }

xy = np.asarray([pos[v] for v in pos])
node_collection = plt.scatter(
        xy[:, 0],
        xy[:, 1],
        s=12,
        c="red",
        marker="o",
        linewidths=45,
        edgecolors="green",
    )

plt.show()

Actual outcome

I unfortunately cannot attach the html file but I have attached the relevant screenshots.

HTML print page:

HTML screenshot:

HTML screenshot zoomed:

HTML screenshot zoomed more:

Expected outcome

I expect the linewidths to remain fixed and be next to the marker when printing the plot.

Additional information

There is scaling functionality but I don't think the linewidth calculates the inner diameter based on the diameter of the marker, causing it to display with a completely different diameter.

Operating system

OS/X

Matplotlib Version

3.9.4

Matplotlib Backend

module://backend_interagg

Python version

3.10.8

Jupyter version

No response

Installation

pip