How to do if else condition?

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troy
troy 2013-5-11
Hello,
Anyone have idea how to do if else condition?
I have pixel value of AA(i,j)<507x507 double> and BB(i,j)<512x512 double>. I want to do if value of AA(i,j) and BB(i,j) exceed 15 (>15) it will return to "Th" if not it will return to "Offset".
>>(i,j) is row and column for pixel value of an image.
I hope u understand what i need since i am beginner in Matlab and image processing.
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troy
troy 2013-5-14
编辑：troy 2013-5-14
actually i want to find threshold value and Th is Th(i,j). Same for Offset(i,j).
can I fix AA and BB, declare as:
AA(i,j)=(507:507); BB(i,j)=(507:507); like that?
thanks for the tutorial..
Walter Roberson
Walter Roberson 2013-5-14
507:507 means the list of numbers starting from 507, incrementing by 1, until 507 is reached, and so would be equivalent to just 507 itself.
If you are trying to preallocate A, then
A = zeros(507, 507);

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Walter Roberson
Walter Roberson 2013-5-11
if AA(i,j) > 15 & BB(i,j) > 15
... do something
else
... do something else
end

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