Plotly.py: Annotated heatmaps: font colour blends with the colour of the square when using zmin and zmax

[PlatonB]

Since there's no reaction to the new message in #1300, I'll write it as a separate issue.

Bug can be reproduced when using zmin and zmax arguments. Plotly 4.5.0.

from random import triangular
import plotly.figure_factory as ff

z = [[round(triangular(0.01, 0.1), 3) for j in range(10)] for i in range(10)]
ff.create_annotated_heatmap(z, colorscale='greens').show()
ff.create_annotated_heatmap(z, colorscale='greens', zmin=0, zmax=1).show()

Without zmin and zmax:

With zmin=0 and zmax=1:

[emmanuelle]

Thanks @PlatonB this is indeed a bug.

[bensdm]

I have the same issue with colorscale='Rdbu' without zmin and zmax

[nicolaskruchten]

Agreed, this is a bug, and is probably fixable in this repo rather than Plotly.js, for once :)

[bensdm]

Any update on this? should be quite easy to fix. Also was wondering why RdBu is in both sequential and diverging color scales https://plotly.com/python/builtin-colorscales/

[nicolaskruchten]

No update, we'd be happy to accept a PR for it if it's easy :)

The RdBu inclusion in sequential was a mistake, as noted in the docs you linked:

[bensdm]

I have submitted a PR, (this is my first one), not sure why the build doc requirement failed https://github.com/plotly/plotly.py/pull/2892