what is meaning of

What is meaning of

if sum(ones(size(result))-result<=0.05) == 1 && sum(result >= 0.2) == 1
            [val, num] = max(result);
            str = char(all_Signatures{num});

Answer 1

[Image Analyst]

It says that if there is exactly one number more than 0.95 and less than 1 to find it's value and location. Then it picks a string or number out of a cell array called num, converts it to char (which gives the ascii character if num is a number) and puts it into str.

[Walter Roberson]

If there is exactly one number more than 0.95 and exactly one number greater than or equal to 0.2. That would have to be the one value greater than 0.95, but the additional check is ensuring that there is nothing from 0.2 to 0.95 .

There is no limitation that the value must be less than 1, though.

num would correspond to the position of that value that was greater than 0.95 .