Le 16/10/2019 à 13:19, Stéphane Mottelet a écrit :
Sorry, I thought you were just asking about the tildas, not the syntax
of unique() in Scilab.
Please see
https://help.scilab.org/docs/6.0.2/en_US/unique.html
vs
https://fr.mathworks.com/help/matlab/ref/unique.html
Matlab syntax [C,ia,ic] = unique(___) with 3 outputs has no
equivalent in Scilab.
If this output option is required, this request should be urgently
reported on Bugzilla.
Indeed, some new unique() features have been implemented and pushed on
the Scilab forge for Scilab 6.1.0
<https://codereview.scilab.org/#/c/20918/>,
and are pending, in answer to
http://bugzilla.scilab.org/8418http://bugzilla.scilab.org/15522http://bugzilla.scilab.org/15795
Such a request would challenge the third output position.
To me, the third foreseen output -- that is the vector of numbers of
occurrences -- would be more useful, and faster to compute, so rather to
appear before possibly ic in the output list.
Please note that ic should be computed as well in case of "r" or "c" option.
Regards
Samuel
i.e. in Matlab, after [C,ia,ic] = unique(A) then A=C(ic), i.e. values
in ic are the indices of corresponding unique value in C. They can be
recovered with the quick and dirty following loop:
for i=1:length(a)
ia(i)=find(a(i)==C)
end
S.
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