How can i get the last element of a maxium with the help of findpeaks?

Hello,

i want to find a maximum with the last element. I want to use findpeaks instead of islocalmax to solve my problem.

So my question is how can i get the last element of a maxium with the help of findpeaks?

Example with findpeaks:

data = [25 8 15 5 6 10 10 10 1 20 7];
x = 1:1:11;
[pks,pksInx] = findpeaks(data);

figure
plot(x,data,'b')
hold on
plot(pksInx,pks,'ko')
hold off

But how it should looks like with islocalmax:

TF1 = islocalmax(data, 'FlatSelection', 'last');
figure
plot(x,data,'b',x(TF1),data(TF1),'ko')

[madhan ravi]

Why not islocalmax() any reasons?

[Denis Paul]

No, there is not a big reason. I was just interested because its possible with the islocalmax() function and maybe its was possible with the findpeaks() function also. Now i know it isn't.

Answer 1

[madhan ravi]

https://www.mathworks.com/help/signal/ref/findpeaks.html#bufhxsk-2

It states:

“For the flat peak, the function returns only the point with lowest index.”

[Denis Paul]

OK, so i must use islocalmax(). Thanks for the explanation.

Answer 2

[Mario Malic]

According to documentation, variable you named pks is a vector that contains values you need. You just need to call the last element of the vector.

pks(end)

[madhan ravi]

That would just select the last peak. According to what I understood OP wants the last peak if they are the same peaks. Three 10s and OP wants the last 10 instead of the first.

[Mario Malic]

Ah true.