MATLAB: Creating a vector using if and for statement

ifvector

I wrote a code to extract from a vector to another vector only numbers less than 10 and displayed the output to see the process a=[2; 8; 3; 30; 4; 50; 100; 200; 4; 80; 500] :
function b=clasify_decimels(a)
b=zeros(11,1);
for i=1:size(a,1)
    if  (a(i)<10)
        b=a(i);
        disp(b)
    end
end
The display is fine, it does what it should do:
>> clasify_decimels(a)
 2
 8
 3
 4
 4
Yet it does not store the output in vector b that I have defined. Why is that?

Best Answer

   b(i)=a(i); %should be b(i) instead of b prevents overwriting 
%edit
 a=[2; 8; 3; 30; 4; 50; 100; 200; 4; 80; 500] :
b=clasify_decimels(a) %function calling
function b=clasify_decimels(a)
b=zeros(11,1);
for i=1:size(a,1)
    if  (a(i)<10)
        b(i)=a(i);
    end
b
end
type whos b %in command windows if the values is stored or see workspace
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