techascent / tech.ml.dataset

see here : https://clojurians.zulipchat.com/#narrow/stream/236259-tech.2Eml.2Edataset.2Edev/topic/.60replace-missing.60.20.20removes.20sometimes.20column.20.20metadata

Could it be that there are similar problems in other places ?

tech.ml.dataset/src/tech/v3/dataset/math.clj

Line 203 in 717383f

(ds-col/new-column colname result)

?

Probably it is correct to say, that a TMD function should not "touch" any column metadata it is not directly concerned with.
(especially preserving all existing column metadata)

Yes I agree.

Fixed in latest.

`replace-missing` removes sometimes column metadata