Filter löschen
Filter löschen

Knowing the presence of a peak around a point

2 Ansichten (letzte 30 Tage)
Vinay Killamsetty
Vinay Killamsetty am 30 Mai 2021
How to know wheather a peak is present around a ponint 'x0' in a 1d plot.
Clearly saying I want to know wheather a peak is present in the space 'x0-d' to 'x0+d' where d is a variable representing the distance from the point x0
  2 Kommentare
Walter Roberson
Walter Roberson am 30 Mai 2021
Ah, but how do you define a "peak" for this purpose?
A
* *
* * C
* **B **X**
* *
Suppose C is within the defined range of X, but A is not within that range. C is a peak relative to BX, but C could also be said to only be on the shoulder of a different peak, A
Vinay Killamsetty
Vinay Killamsetty am 30 Mai 2021
Hi, Walter.
I want to chek whether the Maximum peak of the plot is in the defined range.

Melden Sie sich an, um zu kommentieren.

Akzeptierte Antwort

Walter Roberson
Walter Roberson am 30 Mai 2021
Assuming you have a vector of x values (rather than x0 being an index), and that your signal is called y:
acceptable_idx = find(abs(x-x0)<=d);
[~, peakidx] = max(y);
if ismember(peakidx, acceptable_idx)
%yes, peak is inside the desired interval
end

Weitere Antworten (0)

Community Treasure Hunt

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

Start Hunting!

Translated by