Colours used: scatterplot example goes beyond data range

[edwardchalstrey1]

Possibly due to an issue with .mark_bar() in altair, setting the "Color Binning" widget to "Continuous" results in the the y axis of the "colours used" and "density plots" not lining up correctly. This is because the colours used plot seems to be showing data points that exist outside the range of the data.

Debugging

Drop the following code into a cell of the "simple" scatter plot notebook (that loads the movie_data df) which clearly shows the issue

print(movie_data['Production_Budget'].min())
print(movie_data['Production_Budget'].max())
chart = alt.Chart(movie_data) \
    .mark_bar() \
    .encode(
        y=alt.Y('Production_Budget', title=""),
        x=alt.X('count()', sort='descending', title="")
    )
display(chart)

Already tried

• Setting clamp=True
• Adjusting domain
• Adjusting bar size
• Fiddling with other Altair Scale params e.g. Zero