I never used sparse arrays. An empty element means missing data? That
seems useful. Does that mean the problem is solved or are float arrays
preferable to sparse arrays for some other reason? It is easy enough to
make distinctions between NaNs, positive/negative infinity, missing data
and valid data? There are no problems with calculations on sparse
arrays? /Erling
Den 2017-09-21 kl. 03:29, skrev Raul Miller:
That wouldn't make a lot of sense, though, for classic operations on
sparse matrices (like +/ .*), would it?
That said, it might sense to leave 0 as the sparse element, and then
use the distinction between sparse zeros and dense zeros to track
undefined values...
Thanks,
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