findAllPeaks

Complements find peaks function with the possibility to find all peaks, both local maximums, and local minimums.

Besides complementing find peaks function with the possibility to find all peaks, both local maximums, and local minimums.
This also provides a possible workaround for the findpeaks bug pointed out by PeakProminencesBugExample.mlx file.

The output of the findAllPeaks funcition is a set of structure arrays.
Positive, negative and all peaks respectively with the following fields:
- peak
- location
- width
- prominence
- base
- isNegative
- prominenceRatio

Usage example:

x_length = 1000;
x = linspace(0,1,x_length);
PeakSig = peakSigFcn(x, x_length);

[positive, negative, all] = findAllPeaks(PeakSig,x);

figure
plot(x, PeakSig);
hold on

% Plot positive peaks in red.
plot([positive.location],[positive.peak],'v','MarkerSize',5,...
'MarkerEdgeColor','black',...
'LineStyle','none',...
'MarkerFaceColor','red')

% Plot negative peaks in green.
plot([negative.location],[negative.peak],'^','MarkerSize',5,...
'MarkerEdgeColor','black',...
'LineStyle','none',...
'MarkerFaceColor','green')

% Plot peak computed bases. Prominences fixed.
plot([all.location],[all.base],'+','MarkerSize',5,...
'MarkerEdgeColor','black',...
'LineStyle','none')