Add an option to set the opacity of markers in the legend

Can you kindly consider adding an option to set the opacity of legend markers? Currently, the opacities of the legend's markers are tied to the opacity values of the traces.

Plotly Version
plotly.js v2.35.2

Some scatter plots use a very low opacity (<0.10) to display the concentration of overlapping data points.

👇 This can result in imperceptible marker colors in the legend, as shown below:

👇 Feature request: add an option to set the legend marker opacity

I used a workaround to manually set the opacity of the scatterpts class using CSS.

/* current workaround */
.legendpoints .scatterpts {
  opacity: 1 !important;
}

👇 CodePen for Testing

Related posts:

• Issue: px.scatter_geo opacity changes markers opacity and legend items opacity. Is there a way to change one but not the other?
• Legend marker opacity and spacing
• Configuring the alpha (opacity, transparency) for the items in legend of scatter plot of plotly

Thank you for maintaining one of the best DataViz libraries! 👍

Utilisez le CodePen lié pour reproduire les marqueurs de légende du nuage de points à faible opacité dans plotly.js et examinez le comportement des marqueurs de légende à l’origine du contournement .legendpoints .scatterpts. Définissez une option dont la valeur contrôle l’opacité des marqueurs de légende indépendamment de l’opacité de la trace, puis vérifiez que l’apparence de la légende et le rendu de la trace restent corrects.