Is the labels slot must be integer?

[Mr-Milk]

It's stated in the doc that labels' dtype must be integer, is the data type strictly validated? Will it cause future issues if I store it in float?

[LucaMarconato]

Yes, currently it's not validated. I tracked this here: #527.

We will add a validation for integer types because this is expected in several parts of the codebase (so please use integers for labels). Currently validation would pass, but downstream methods such as aggregate(), get_centroids(), to_polygons(), ... would likely fail.