draw a graph of peaks find peaks

조회 수: 2(최근 30일)
Lev Mihailov
Lev Mihailov 2022년 7월 7일
답변: Image Analyst 2022년 7월 7일
I use the find peaks command, but it does not give me the exact coordinates for plotting
figure(1), clf
hold on
the graph is not created correctly, all red dots are shifted to the left
Thanks in advance
p.s. if I use only find peaks, the graph builds the correct one for me, but I need to show these peaks in a different color


Chunru 2022년 7월 7일
편집: Chunru 2022년 7월 7일
figure(1), clf
% plot(Y,X(1026,:),'k-')
plot(X(1026,:), Y, 'k-')
hold on
plot(X(1026, locs), pks,'r*') % <=============

Image Analyst
Image Analyst 2022년 7월 7일
Try this:
xv = X(1026, :); % All columns of row 1026
[peakValues, indexesOfPeaks, w, p] = findpeaks(xv, FsY, 'MinPeakProminence', 2);
% Plot original data in black
hFig = figure;
plot(xv, Y, 'k-', 'LineWidth', 2)
grid on;
% Now plot red stars over the peaks.
hold on
plot(xv(indexesOfPeaks), peakValues,'r*');
If you have any more questions, then attach your data and code to read it in with the paperclip icon after you read this:

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by