Performing conditionals on values in a matrix>

I have a function that is supposed to take an input of a matrix, A, which is in the form: [x y z; x y z; ...]. I extract each x, y, and z values using:

x = A(1:end,1);
y = A(1:end,2);
z = A(1:end,3);

This works fine when I perform the calculations finding the distance from the origin to this inputted point:

x_square = x.^2;
y_square = y.^2;
z_square = z.^2;
total = x_square + y_square + z_square;
d = total.^(1/2);

However, I need to check and see if the input values fall within these ranges: 0 <= x <= 375, -50 <= y <= 50, 0 <= z <= 100

How can I perform conditionals on the columns of the matrix, and so that if it fails to follow these conditionals, output that d = 0?

Answer 1

[Walter Roberson]

d = sqrt(sum(A.^2, 2));
mask = 0 < A(:,1) & A(:,1) <= 375 & -50 < A(:,2) & A(:,2) <= 50 & 0 <= A(:,3) & A(:,3) <= 100;
d(mask) = 0;