d = [ 1,2,3,4,5,6,7 ]
str_e = "";
for i=1:1:length( d )
    if i == 1
        str_e = sprintf('{%0.9f',d(i));
        
    elseif i == length( d )
        str_e = sprintf('%s,%0.9f};',str_e,d(i));
 
    else
        str_e = sprintf('%s,%0.9f',str_e,d(i));
    
    end
    %str_e = sprintf('%s,%0.5f',str_e,d(i));
end
str_e