Effacer les filtres
Effacer les filtres

How to label your peaks in descending order?

19 vues (au cours des 30 derniers jours)
John Mark Enhaynes
John Mark Enhaynes le 30 Mar 2021
Modifié(e) : LO le 30 Mar 2021
I search the whole community and website on how to label my peaks from 1-5 from the highest value given
Here is my code I've made so far:
fid=fopen('Programming 2 Data.txt');
e=textscan(fid,'%f %f','headerlines',1);
f=cell2mat(e);
x = f(:,1);
y = f(:,2);
[sortedX,sortIndex]=sort(x);
sortedY=y(sortIndex);
plot(x,y)
findpeaks(sortedY,sortedX,'MinPeakHeight',290,'Annotate','Extents');
xlabel('cm^-1')
ylabel('%T')
title('FTIR')
axis tight
grid
set(gca,'xdir','reverse')
I have search the terminology on findpeaks, but it doesn't really help me that much to get the desired result that I wanted.
  3 commentaires
John Mark Enhaynes
John Mark Enhaynes le 30 Mar 2021
I've tried that, but I've got similar errors from other users I've seen in the forum
Mathieu NOE
Mathieu NOE le 30 Mar 2021
I ve plenty of other similar functions (attached)
try with peakseek and do the sorting by yourself afterwards

Connectez-vous pour commenter.

Réponse acceptée

LO
LO le 30 Mar 2021
Modifié(e) : LO le 30 Mar 2021
something like this ?
my guess is that you won't need the sortedX because you are looking for peaks on your Y axis, right ? But try adapting this to your code. Eventually the "locs" variable will have to be modified taking into account your X vector.
[peaks,locs,widths] = findpeaks(sortedY,'MinPeakHeight',290,'Annotate','Extents');
[vals,order] = sortrows(peaks,'descend'); % sort them based on peak value, for instance, but you can sort them based on widths as well (just replace peaks with widths in sortrows)
scatter(locs(order),peaks(order),'rv');

Plus de réponses (0)

Community Treasure Hunt

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

Start Hunting!

Translated by