Hello,
In Scilab 5.5 and up to Scilab 6.0.1, there was no empty sparse. Trying
to build it yielded [] :
--> sparse([])
ans =
[]
--> sparse([],[],[0 0])
ans =
[]
However, in the 6.0 branch, the second statement now creates an empty
sparse:
--> sparse([],[],[0 0])
ans =
( 0, 0) zero sparse matrix
while we still have
--> sparse([])
ans =
[]
I am wondering if this change is intentional, because it does not look
documented.
I am not really able to assess the impact of this change.
I have the feeling that it's rather useful to be able to have an empty
sparse. This enables the fact that, from a sparse, deletions -- possibly
down to empty -- and then further insertions can be done without loosing
the sparse encoding.
However, i think that, if this is kept for Scilab 6.0.2, then still
getting [] out of sparse([]) instead of getting the empty sparse becomes
rather inconsistent and should be changed as well.
Looking forward to reading you about this topic
Samuel
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