How to design a Toeplitz matrix with negative lower triangle elements and zero main diagonal elements

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Vinay Killamsetty
Vinay Killamsetty 2019년 10월 1일
답변: Bruno Luong 2019년 10월 1일
I want to design a square symmetric toeplitz matriz with diagagonal elements zero and lower triangle elements should be negative
Is there any simple command or any simple coding technique to obtain this without using any loops.
The sample matrix is shown below: N*N is the size of the matrix decided by the user
0 1 2 3 - - - (N-1)
-1 0 1 2 - - - (N-2)
-2 -1 0 1 - - - (N-3)
-3 -2 -1 0 - - - (N-4)
-
-
-(N-1) -(N-2) -(N-3) -(N-4) - - - 0
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Vinay Killamsetty
Vinay Killamsetty 2019년 10월 1일
I got the answer
triu(toeplitz([0,1,2,3,4,5]))+tril(toeplitz([0,-1,-2,-3,-4,-5]))
But is there any onswer simpler than this?

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Bruno Luong
Bruno Luong 2019년 10월 1일
toeplitz(0:-1:-5,0:5)

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