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

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];

Answer 1

[madhan ravi]

B = A(~A(:,1),:)

[JL]

thanks guys!

Answer 2

[Fabio Freschi]

index = 1;
% A(:,1) == index finds the rows with specific value (logical indexing)
B = A(A(:,1) == index,:)