compare value between different arrays
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Hi all. I have 2 array that have value. I want to compare each value of each array, but i dont know how to do that. Can somebody help me ? Thanks in advance.
6 Comments
Iain
on 24 Jun 2013
result = b > a; %(b greater than a)
result = b >= a; %(b greater or equal to a)
result = b == a; %(b equal to a)
result = b <= a; %(b less than or equal to a)
result = b < a; %(b less than a)
result is the same length as b, and is 1 (true) when b is that comparison to a, and 0 (false) everywhere else.
all(result) will be 1 (true) if all the elements of b are "that comparison"
any(result) will be 1 (true) if any of the elements of b are "that comparison"
result = b > (5*a); %(b greater than five times a)
Answers (2)
Azzi Abdelmalek
on 23 Jun 2013
Edited: Azzi Abdelmalek
on 23 Jun 2013
a=[2 3 4]
b=[1 4 0]
comp=a<b
12 Comments
Jan
on 24 Jun 2013
Thanks for the explanantions. Unfortuantely I do not understand this:
i want to calculate 2 value above ( maybe divided ) if the result approach to value tolerance, so, the image have percentage minimal similarity 90%.
I still do not know hwta kind of result you expect for the above mentioned input data. Are you able to calculate it manually or give a definition of the calculations? In the comments to the question you wrote "i want to compare each value of array b to array a". As soon as it is explained, what "campare" means explicitly, I assume the problem can be solved in seconds. So please try to explain this clearly.
Thorsten
on 24 Jun 2013
You can compute two fractions a/b and b/a, and then take the minimum to ensure that the value is not above 100%. Then take the minimum of these values to get "percentage minimal similarity"
min_similarity = min(min([a./b; b./a]))
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