remove specific rows by referencing on the first digit of each row.

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JL
JL 2019-9-9
评论： JL 2019-9-9
Hi everyone, I want to reduce remove rows in matrix A, by referencing on the first number in each row to get B. In this case, if the first number is 1, remove the row
A = [1 1 1 0
0 1 1 1
0 1 1 0
1 0 1 0];
Results B =
B =[0 1 1 1
0 1 1 0];

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采纳的回答

madhan ravi
madhan ravi 2019-9-9
B = A(~A(:,1),:)

更多回答（1 个）

Fabio Freschi
Fabio Freschi 2019-9-9
index = 1;
% A(:,1) == index finds the rows with specific value (logical indexing)
B = A(A(:,1) == index,:)

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