findAllPeaks

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')