mat64: rethink XFromY API for extracting matrices from decompositions
kortschak opened this issue · comments
When there were few of these it made sense to have the extractions be a method on *Dense or other matrix types. However, now (partly due to me) there is a proliferation of these on *Dense. Having just had a look at stat.CC I'm not averse to the approach that is used there with Left and Right. We should consider migrating to this approach (at least for some/most? of the decompositions).
This change would have the advantage of keeping the documentation around the decompositions together for each type of decomposition, would reduce the number of methods on *Dense and would avoid giving the impression that there are blessed decompositions (that packages outside mat64 cannot match).
SGTM
This has been done in gonum/gonum