trouve 0.6.0

Event detection and transformation for time-series data

Trouve

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A package to search for events in time-series data that match a boolean condition. Various

transformation functions are built in to filter and alter events.

See Trouve’s documentation at https://trouve.readthedocs.io

Install

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trouve is on the Python Package Index (PyPI):

pip install trouve

Dependencies

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• numpy

• pandas

• toolz

Example

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This finds events in a short sample of 1Hz, time-series data and filters out events based

on their duration

>>> import numpy as np

>>> from trouve import find_events

>>> import trouve.transformations as tt

>>> x = np.array([1, 2, 2, 2, 0, 1, 2, 0, 2, 2])

>>> period = 1 # period = 1 / sample_rate

>>> duration_filter = tt.filter_durations(2, 3)

>>> events = find_events(x == 2, duration_filter, period=1)

>>> len(events)

2

>>> events.as_array()

array([ 0.,  1.,  1.,  1.,  0.,  0.,  0.,  0.,  1.,  1.])