.indexes doesn't work for uint?

[Former user]

Hi! ' Thanks for this code! As a Matlab user this is very intuitive. I encountered a problem when I wanted to find the peaks of a signal. My signal (or rather image) consists of uint16. When I try to find peaks .indexes returns an empty array. When I try the same by manually 'making' the same signal/array with int32 it returns the correct peaks. Is this intentional?

Cheers!

[Lucas Hermann Negri]

Hello,

peakutils.indexes() should work only on signed types, as it relies on computing the first difference of the data to check for peaks. Instead of automatically converting to a signed type, I've changed it to be explicit: specify this on the documentation and raise an exception if called with an unsigned type.

You can convert it to a signed type before calling indexes, that is:

idx = peakutils.indexes(y.astype(np.int16))

Beware that peakutils will not report plateaus for now (and they are more probable of occurring in integer data).

[Lucas Hermann Negri]

Fixed on HEAD (raises an exception when called with unsigned data).