Binary to Decimal

function dec = bin2dec2(bin)
binstring = [];
if length(bin) > 1
     for i = 1:length(bin)
          tempstring = num2str(bin(i));
          binstring = [binstring,tempstring];
     end
else
     binstring=num2str(bin);
end
for i = 1:length(binstring);
     value(i)=str2double(binstring(i)) ...
         *(2^ (length(binstring)-i) );
end
dec=sum(value);