I want to plot (filter) the highest value among both y1, y2.

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omran alshalabi
omran alshalabi 2022-9-4
评论： omran alshalabi 2022-9-4
I have this graph; I want to plot the highest value among both y1, y2. if blue line is highest want to plot the blue line. if red line is highest want to plot the red line.
I use this code, plot(x1, y1, x2, y2);

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Chunru
Chunru 2022-9-4
Ran in:
% Generate some data
x1 = sort(rand(50, 1));
y1 = randn(size(x1)) + 0.4;
x2 = sort(rand(50, 1));
y2 = randn(size(x2)) + 0.3;
plot(x1, y1, 'r', x2, y2, 'b')
xmin = min([x1; x2]);
xmax = max([x1; x2]);
xq = linspace(xmin, xmax, 1000);
hold on
% Interpolation and max
y1q = interp1(x1, y1, xq, 'linear', 'extrap');
y2q = interp1(x2, y2, xq, 'linear', 'extrap');
plot(xq, max(y1q, y2q), 'k', 'LineWidth', 2);
legend("y1", "y2", "max", "Location", "Best")

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