Equals numbers returns not equal

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?

Answer 1

[Clemens Gersch]

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)

[SAFA YILDIRIM]

Thank you so much. It solved the problem :)