hi :) I need help , I have an array of float angles , I want to find the indexes of angles in the range -pi/M<theta<=pi/M thanks

I try the following code:

(The problem is that this gives me also theta = -pi/M )

tolerance = 10^-4
M = 4;
thetaindxes_in_range = find(abs((abs(theta(:,1))-pi/M)<=tolerance));% theta

Answer 1

[Image Analyst]

Then don't use abs(). Do each comparison separately. Like this:

M = 4;
indexesInRange = (theta > -pi/M) & (theta <= pi/M)
theta_in_range = theta(indexesInRange)

[fatema hamodi]

I use your codes lines with some fix because the array

 is float thanks alot

indexesInRange =(theta +pi/M>tol) & (theta-pi/M <= tol);

indxoftheta_in_range= find(indexesInRange==1);

[fatema hamodi]

sorry it's not working well because the following two lines code give the same result but they shouldn't give the same result because the second range contain also theta=-pi/M while the first didn't contain it

indexesInRange =(theta +pi/M>tol) & (theta-pi/M <= tol)

and

indexesInRange =(theta +pi/M>=tol) & (theta-pi/M <= tol)

[Image Analyst]

Please notice I did NOT use tol. You shouldn't either.