How make label text vertical in plotly.express.choropleth_mapbox?

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HI @Ruslan welcome to the forums.

Take a look at this example on how to show a vertical colorbar title:

Rotating color bar title?

Hi @austinv11 welcome to the forums. Unfortunately there is no builtin function for this, you would have to use annotations. An example: import plotly.express as px import numpy as np fig = px.imshow( np.random.randint(0, 255, size=(10, 10)), color_continuous_scale='viridis', ) fig.update_layout( width=600, height=600, coloraxis_colorbar={"title": 'Real title'} ) # add your rotated title via annotations fig.update_layout( margin=dict(r=150), # ^^ making a bit of s…