Scattergl() misallgnes text location for sub-second x-data

📊 Plotly Python
1

I’m plotting ‘markers+text’ in a scattergl() plot, and notice that the text is not collocated with the markers. It seems that scattergl() rounds the x-location for the text.

Here is the code with scattergl()

from datetime import datetime, timedelta
import numpy as np
import plotly.graph_objects as go

t = np.arange(datetime(2023,1,1,13,25,4), datetime(2023,1,1,13,37,4), timedelta(minutes=0.5)).astype(datetime)
y = np.arange(len(t))
txt = ['y={:d}'.format(x) for x in y]
fig_scattergl = go.Figure()
fig_scattergl.add_trace(go.Scattergl(x = t,
                                     y = y,
                                     mode = "markers+text",
                                     text = txt,
                                     textposition='middle right'))
fig_scattergl.update_layout(title='go.Scattergl()')
fig_scattergl.show()
fig_scattergl.write_html('fig_scattergl.html')

This creates:

scattergl_plot
scattergl_plot2076×1205 92.2 KB

Using scatter() works just fine:

fig_scatter = go.Figure()
fig_scatter.add_trace(go.Scatter(x = t,
                                 y = y,
                                 mode = "markers+text",
                                 text = txt,
                                 textposition='middle right'))
fig_scatter.update_layout(title='go.Scatter()')
fig_scatter.show()
fig_scatter.write_html('fig_scatter.html')

This creates:

scatter_plot
scatter_plot2076×1205 99 KB

I like using scattergl() for the obvious performance improvements. Any suggestion on how to fix this?

2

Could this be related to Incorrect text position with ScatterGL plots · Issue #4682 · plotly/plotly.js · GitHub?