angleref not implemented for scattergl

[jrkkfst]

It seems to me that angleref works fine using px.scatter when using svg, and it does not work when using webgl.

angleref Code: fig.update_traces(marker_angleref=<VALUE>, selector=dict(type='scatter'))

However, the scattergl page does not, but it is referenced that it should angle Code: fig.update_traces(marker_angle=<VALUE>, selector=dict(type='scattergl')) Type: angle Default: 0 Sets the marker angle in respect to angleref

Is this a bug? Or perhaps missing because webgl does not support angleref?

[jackthepanisher]

Any update on this issue? Per default, Plotly Express will change between using svg and webgl so users might run into this depending on the amount of data points in a particular plot.

The following works with the default (svg) but fails with webgl:

import plotly.express as px

df = px.data.gapminder()

countries = df.query("continent == 'Europe'")["country"].unique()[:5]

fig = px.line(df.loc[df["country"].isin(countries)],
              x="year", y="pop", color="country",
              markers=True,
              # render_mode="webgl"
              )
fig.update_traces(marker=dict(symbol="arrow", size=15, angleref="previous",))
fig.show()