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How do I only highlight the decreasing portion of the green in the plot with the find function?

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wobbly 2021-9-9

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https://ww2.mathworks.cn/matlabcentral/answers/1450084-how-do-i-only-highlight-the-decreasing-portion-of-the-green-in-the-plot-with-the-find-function

评论： Walter Roberson 2021-9-10

The green in the graph that is highlighted on the curve, i want it so it would only highlight the peak and the decreasing slope areas? How would I go about that and incorporate it if this is part of my code: section = find( ft > (8));

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Rik 2021-9-10

I recovered the removed content from the Google cache (something which anyone can do). Editing away your question is very rude. Someone spent time reading your question, understanding your issue, figuring out the solution, and writing an answer. Now you repay that kindness by ensuring that the next person with a similar question can't benefit from this answer.

Walter Roberson 2021-9-10

Effectively the same question as https://www.mathworks.com/matlabcentral/answers/1449734-how-do-i-find-the-first-30-percent-of-each-period-of-cosine?s_tid=srchtitle

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Star Strider 2021-9-9

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The vector in the plot image (or the code to create it) are not available, so I substituted my own.

This should get you started —

x = linspace(3, 12); % Create Data

y = sinc(x-7.5); % Create Data

[pks,locp] = findpeaks(y); % Peaks & Location Indices

[vys,locv] = findpeaks(-y); % Valleys & Location Indices

figure

plot(x, y) % Plot Original Vector

hold on

for k = 1:numel(locp)

idxrng = locp(k) : min(locv(locv>locp(k))); % Define Range Of Indices

idx(idxrng) = y(idxrng)>= 0.6; % Define Portion Of Curve

plot(x(idx), y(idx), '-g', 'LineWidth',5) % Plot Withg Highlights

end

hold off

Make appropriate changes to work with other vectors.

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MATLAB Graphics 2-D and 3-D Plots

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R2020b

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