[Scilab-users] Advice from Scilab community

[Carrico, Paul]

Dear All

 

I'm asking here an advice from the community in order to find a (fast
and clean) solution ; I've the following issue :

-          I've a (n x 4) matrix where n may be huge (several hundred
thousand of lines is common )

-          I need to find and to remove the line wich has the same
numbers (but different in order)

-          I know that there's only one occurrence ... thus when it has
been found, not necessary to continue

 

Example :

 

A = [

X  X  X      X 

X  X  X      X 

1 9 1000 994423

X  X  X      X 

X  X  X      X 

X  X  X      X 

1000 994423 1 9  ... or 994423 1 9 1000 ... or 9 1000 994423 ... only 3
possible permutations

X  X  X      X 

X  X  X      X 

X  X  X      X 

]

 

Any suggestion that avoids the use of (intensive ugly) loops ?

 

 

NB: 

additional question : 

-          If t = [1 2 3 4]

-          If v = [1 2 3 4]

-          If z = [0 2 3 9]

-          Then (t == v) provides [T T T T]

-          Then (z == v) provides [F T T F]

-           .... Is it possible to have a single Boolean with all the
cells met the requirement (T) and when it's not the case (F) ?

 

Thanks in advance

 

Paul

 

 


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