Contains findpeaks function is inspired by MATLAB's findpeaks function.
The package allows you to get positions of local maxima of one-dimensional data.
Since real-world data are often noisy, there is usually a large number of local maxima that are of no interest.
findpeaks offers filtering based on 4 parameters (can be combined):
- peak height
- distance between peaks
- peak prominence
- threshold - minimal difference between neighboring data points
If this repository does not match your needs, have a look at:
using Findpeaks
using DelimitedFiles
using Plots
default(legend=false)
data = readdlm("assets/example_spectrum.txt")
x = data[:, 1]
y = data[:, 2]
peaks = findpeaks(y, x, min_prom=1000.)
plot(x, y, title="Prominent peaks")
scatter!(x[peaks], y[peaks])
sep = 0.2
peaks = findpeaks(y, x, min_dist=sep)
plot(x, y, title="Peaks at least $sep units apart")
scatter!(x[peaks], y[peaks])
Pull requests are welcome!