Detect valleys

[Former user]

Just wondering if its possible to detect valleys instead of/in addition to peaks in a signal using peakutils.indexes()?

If not currently possible, what change would have to be made to allow for that functionality?

[Lucas Hermann Negri]

You can detect the valleys by calling indexes(-data), like:

import peakutils as pu
import numpy as np

data = np.array([5, 5, 5, 4, 3, 2, 1, 2, 3, 4, 5, 5, 4, 3, 4, 5])
indexes = pu.indexes(-data)

[Simon Ho]

thanks, but this method doesn't allow for the detection of both peaks and valleys simultaneously. I could detect valleys, then detect peaks, resulting in 2 arrays, but I think they would be pretty difficult to combine together

[Lucas Hermann Negri]

You can join the two arrays and sort them, if you want. I will mark this as 'not an issue', unless you have a specific case that justifies a separate function. Thanks.

[Lucas Hermann Negri]

Not an issue.