MATLAB: Equals numbers returns not equal

if statement

Hello I have a code like below:
figure
    arr = [0.0207,0.6371,0.7504,0.1585,0.3091,0.5112];
    for i=1:6
        item = arr(i);
        image = NewImage;
        for r=1:row
            for c=1:column
                temp = image(r,c,1);
                if item ~= temp
                    image(r,c,:) = 0;
                end
            end
        end 
        subplot(3,2,i),imshow(image);
    end
temp variable and item are both equal to 0.0207 but program flow enters if block. What is the problem?

Best Answer

Are you sure that they are exactly the same?
Try 
format long
and then display your values again. I guess that temp is only roughly 0.0207 and not exactly.
If that is the reason for your problem, you can try the following:
if item ~= round(temp,4)
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