如何更改 Plotly 3D scatter plot 中的标记线宽度？

Question

I am plotting x/y/z data using Plotly with Python and whatever I do, I cannot make the marker lines thicker. I followed the "manual" but they do it for 2D plots, which works for me, but I can't get it to work on the 3D version.

I create the plot:

fig = px.scatter_3d(df, x='xvalues', y='yvalues', z='zvalues')

I change the markers

fig.update_traces(marker=dict(
        color='lightblue',
        size=10,
        line=dict(color='purple',
                  width=3
        )))

colors and everything work, but there's either no line if I set the width to 0 or there is a line for every other value but it seems to be 1 px wide.

I also tried

fig.data[0].marker.line.width=3

which shows the exact same behavior. Line is gone when set to 0, line is 1 px wide when set to any other value.

Is there a way to fix this? Sadly the documentation isn't very good.

Answer 1

Line dict should not be inside marker. Try this:

fig.update_traces(
    marker=dict(
        color='lightblue',
        size=10),
    line=dict(
        color='purple',
        width=3
    )
)

What I mean, you havn't set your brackets correctly