how do you eliminate rows of a matrix?

I have a 100x2 matrix of random values and i need to remove any row that has a negative value in it. I originally changed all the positive values to 1 and negative values to 0 by setting the matrix to be > 0, just a bit lost on how to delete the rows with a zero (negative value).

Thanks in advance

Answer 1

[the cyclist]

% Some pretend data
A = rand(100,2);

% Identify row with negative values
idx = any(A<0,2);

% Remove them
A(idx,:) = [];

Answer 2

[Star Strider]

One possibility:

d = randi(50, 100, 2)-10;           % Original Random Matrix
ds = d;                             % Check Original Matrix
d(any(d<0,2),:) = [];               % Rmeove Negative Element Rows

The ‘ds’ assignment preserves ‘d’ so you can check to see that the routine works. It is not necessary for the code.