How to select corresponding value from an array?

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Priya
Priya 2014-5-25
编辑： Priya 2014-8-6
When I use the following expression for calculating theta I get a value in the range specified for theta below (i.e., 0.5 to 90).
Now based on the obtained value of theta, I have to choose the value of m and n correspondingly. And this must happen automatically, every time theta generates a value which will be close to the elements of the array 'theta' given below.
For e.g.(as in Bold), if theta =10, then my program should take m as 6.604 and n as 0.3112.
Please do help.

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Roger Stafford
Roger Stafford 2014-5-25
If I interpret your word 'close' as meaning 'closest', then you can do this:
theta=[.5 1 1.5 2 3 4 6 8 10 20 30 35 40 45 50 55 60 65 70 75 80 85 90];
[~,p] = histc(acos(K_4./K_3)*180/pi,...
[-inf,(theta(1:end-1)+theta(2:end))/2,inf]);
m_selected = m(p);
n_selected = n(p);
This would still work if K_3 and K_4 are calculated as vectors.

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