MATLAB: How to create a legend and include loop variable values in the labels while plotting a Matrix

iterating legend numberslegend for a matrix in a looplegend in a loop

 u = 1:2:10;
z_x = 1:10;
temp = [1:10;11:20;21:30;31:40;41:50];
figure,
                hold on
                for l= 1:length(u)
                    str = ['S =  ',num2str(u(l))];
                    plot(temp,z_x,'DisplayName',str);
                    
                end
                legend show
The above code displays one value of S multiple times. Since i'm plotting a matrix and want to produce a legend for each uniques curve only one. What correction should I make so that the each S value is displayed only once in the legend.

Best Answer

m = rand(10,8);
plot(m)
legend(compose('s = %d', 1 : size(m,2)))
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