To display only certain lines on the plot you can pass in the handles to the line objects as a parameter to the “legend” function. This ensures that only the lines for which the handles have been passed as the argument are displayed in the legend window
The code below demonstrates this
r = wblrnd(1.2,1.5,50,1);
p = wblplot(r);
l = legend([p(1)], "data");
