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How can i zeroing elements in a matrix?

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Áron Laczkovits
Áron Laczkovits 2012-9-25
评论： DGM 2023-11-2
Well, My task is the following: i have a wav file, that i need to fft, then i load it to a matrix. I want to zeroing the first 10000 elements of the matrix. How can i do that?

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Wayne King
Wayne King 2012-9-25
I'll assume you have a 1-D vector, if that vector is X, then just
X(1:1e4) = 0;
If this is not what you mean, please be more specific.
  2 个评论
Dionysios Gkonis
Dionysios Gkonis 2023-11-2
if the matrix is n*n, how do you zero a row ?
DGM
DGM 2023-11-2
Ran in:
Doesn't matter whether it's square or not. Just address all elements of the row.
A = randi(9,4,4)
A = 4×4
2 5 4 6 5 1 7 1 4 6 8 6 1 3 7 9
A(2,:) = 0 % row 2, all columns
A = 4×4
2 5 4 6 0 0 0 0 4 6 8 6 1 3 7 9

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