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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

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fatema hamodi
fatema hamodi 2017-6-3
关闭： MATLAB Answer Bot 2021-8-20
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

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Image Analyst
Image Analyst 2017-6-3
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)
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fatema hamodi
fatema hamodi 2017-6-3
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)

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