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How to build a classification boundary with Altair? #2031

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ccalobeto opened this issue Mar 22, 2020 · 2 comments · Fixed by #3256
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How to build a classification boundary with Altair? #2031

ccalobeto opened this issue Mar 22, 2020 · 2 comments · Fixed by #3256
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documentation enhancement

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@ccalobeto
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Omitting the dot points of the data, how to build a classification boundary like this image?
classifier decision boundary
@joelostblom
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joelostblom commented Feb 23, 2021 •
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@ccalobeto Please see #2348 (comment) for how to create a shaded region in Altair. Maybe an example should be added in the docs since it has been asked a few times.

@ChiaLingWeng ChiaLingWeng mentioned this issue Nov 8, 2023
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@joelostblom
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A general example was added in #3256. A more elaborate support for decision boundaries in particular could become available with an imshow-like mark, in which case we could do something like this in altair:

image

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[Doc] Add scatter plot with shaded area example ChiaLingWeng/altair
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@joelostblom @ccalobeto