Because the calculations are different: if a is larger then we want to do a minus b divided by a+(2 times b). If b is larger it is the other way around, so absolute value won't give us what we desire. Therefore, I still believe I have to construct an if then statement.
If then Statement For Matrix Math
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Hello, I currently have two txt files loaded as matrices that are 1000x1024 pixels. The code I have below includes math that I want to do at each pixel location for the matrices. However, I want to either subtract the second matrix pixel from the first (if the second matrix pixel is larger) or subtract the first matrix pixel from the second (if the first matrix pixel is larger). Therefore, I am assuming that my code is going in the wrong direction and that I need to do a if/then statement.
a = load('File1.txt'); b = load('File2.txt');
a1=a(a>b); a2=a(a<=b); b1=b(a>b); b2=b(a<=b);
ab = (a1-b1)./(a1+(2*b1)); ba = (b2-a2)./(b2+(2*a2)); ABBA = [ab; ba];
As you can see in this code, I am trying to either do calculation ab if the pixel at hand is larger in the first array or ba if the pixel is larger in the second array. Then, my end goal is to have one array as the output (1000x1024) with the answer to either ab calculation or ba calculation. Because any pixel can be larger in either the first or second array, I am not sure how to go about this. Any help is greatly appreciated, thank you!
回答 (1 件)
Steven Lord
2018 年 3 月 6 日
A = 8*ones(4)
B = magic(4)
X = max(A, B)
N = min(A, B)
Work with X and N.
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