How do I put peaks, prominences, widths and location in an array

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Mackenzie Maher 2022-1-4

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https://ww2.mathworks.cn/matlabcentral/answers/1622405-how-do-i-put-peaks-prominences-widths-and-location-in-an-array

评论： Star Strider 2022-1-5

Hi everyone!

Below is my code and I am try to incorporate the function findpeaks(y,'MinPeakProminence',0.1,) it almost works but the only problem is I get errors every time I try to put the minimum peak prominences into the arrays all peaks and findpeaks(y).

If anyone knows how to fix this I'd again be grateful!

fieldNames = fieldnames(MCR_full.MIB037.Reaches);

allPeaks = cell(10,1);

for k = 1 : 10

thisFieldName = fieldNames{k};

thisArray = MCR_full.MIB037.Reaches.(thisFieldName).kin;

x = thisArray(:, 1);

y = thisArray(:, 3);

[pks,locs,widths,proms] = findpeaks(y);

allPeaks{k} = findpeaks(y);

reachLimitArray= findpeaks(y,'MinPeakProminence',0.1)

if length(reachLimitArray )> 1

disp('There is at least two value above the limit.');

for i = 1 : length(reachLimitArray)

prominence= reachLimitArray(i);

disp(peaks(prominence));

end

else

disp('All values are below the limit.');

end

celldisp(allPeaks)

end

Error: Array indices must be positive integers or logical values.

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Voss 2022-1-5

在 MATLAB Online 中打开

My guess would be this line:

disp(peaks(prominence));

Mackenzie Maher 2022-1-5

Can you not do that or did I just format it wrong?

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采纳的回答

Star Strider 2022-1-5

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1622405-how-do-i-put-peaks-prominences-widths-and-location-in-an-array#answer_868210

Since ‘prominence’ is the first output of that particular findpeaks call, it has the values of the peaks, not their locations (the second output, that would be integer subscript references), so unless the peak values are all integers greater than 0 and are within the number of elements of ‘peaks’ (extremely unlikely in my experience) they are going to be non-integers and will throw that error.