How can i create an envelop for three different Signals. the edges around the three signals that are top most, so there is an envelop around all three but forming 1 plot around all three. All three signals are plotted on the same graph
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For the most trivial case, when the three lines share the same X-values and are provides as vectors:
x = 1:100; y1 = rand(1, 100); y2 = rand(1, 100); y3 = rand(1, 100); joined = cat(1, y1, y2, y3); env_max = max(joined, , 1); env_min = min(joined, , 1);
plot(x, joined); hold('on'); plot(x, env_max, 'k'); plot(x, env_min, 'k');