Base class
pynapple.core.base_class
Abstract class for core
time series.
Base
Bases: ABC
Abstract base class for time series and timestamps objects.
Implement most of the shared functions across concrete classes Ts
, Tsd
, TsdFrame
, TsdTensor
Source code in pynapple/core/base_class.py
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__setattr__
Object is immutable
Source code in pynapple/core/base_class.py
__getitem__
abstractmethod
times
The time index of the object, returned as np.double in the desired time units.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
units |
str
|
('us', 'ms', 's' [default]) |
's'
|
Returns:
Name | Type | Description |
---|---|---|
out |
ndarray
|
the time indexes |
Source code in pynapple/core/base_class.py
start_time
The first time index in the time series object
Parameters:
Name | Type | Description | Default |
---|---|---|---|
units |
str
|
('us', 'ms', 's' [default]) |
's'
|
Returns:
Name | Type | Description |
---|---|---|
out |
float64
|
_ |
Source code in pynapple/core/base_class.py
end_time
The last time index in the time series object
Parameters:
Name | Type | Description | Default |
---|---|---|---|
units |
str
|
('us', 'ms', 's' [default]) |
's'
|
Returns:
Name | Type | Description |
---|---|---|
out |
float64
|
_ |
Source code in pynapple/core/base_class.py
value_from
Replace the value with the closest value from Tsd/TsdFrame/TsdTensor argument
Parameters:
Name | Type | Description | Default |
---|---|---|---|
data |
(Tsd, TsdFrame or TsdTensor)
|
The object holding the values to replace. |
required |
ep |
IntervalSet(optional)
|
The IntervalSet object to restrict the operation. If None, the time support of the tsd input object is used. |
None
|
Returns:
Name | Type | Description |
---|---|---|
out |
(Tsd, TsdFrame or TsdTensor)
|
Object with the new values |
Examples:
In this example, the ts object will receive the closest values in time from tsd.
>>> import pynapple as nap
>>> import numpy as np
>>> t = np.unique(np.sort(np.random.randint(0, 1000, 100))) # random times
>>> ts = nap.Ts(t=t, time_units='s')
>>> tsd = nap.Tsd(t=np.arange(0,1000), d=np.random.rand(1000), time_units='s')
>>> ep = nap.IntervalSet(start = 0, end = 500, time_units = 's')
The variable ts is a time series object containing only nan. The tsd object containing the values, for example the tracking data, and the epoch to restrict the operation.
newts is the same size as ts restrict to ep.
Source code in pynapple/core/base_class.py
count
Count occurences of events within bin_size or within a set of bins defined as an IntervalSet. You can call this function in multiple ways :
-
tsd.count(bin_size=1, time_units = 'ms') -> Count occurence of events within a 1 ms bin defined on the time support of the object.
-
tsd.count(1, ep=my_epochs) -> Count occurent of events within a 1 second bin defined on the IntervalSet my_epochs.
-
tsd.count(ep=my_bins) -> Count occurent of events within each epoch of the intervalSet object my_bins
-
tsd.count() -> Count occurent of events within each epoch of the time support.
bin_size should be seconds unless specified. If bin_size is used and no epochs is passed, the data will be binned based on the time support of the object.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
bin_size |
None or float
|
The bin size (default is second) |
required |
ep |
None or IntervalSet
|
IntervalSet to restrict the operation |
required |
time_units |
str
|
Time units of bin size ('us', 'ms', 's' [default]) |
required |
Returns:
Name | Type | Description |
---|---|---|
out |
Tsd
|
A Tsd object indexed by the center of the bins. |
Examples:
This example shows how to count events within bins of 0.1 second.
>>> import pynapple as nap
>>> import numpy as np
>>> t = np.unique(np.sort(np.random.randint(0, 1000, 100)))
>>> ts = nap.Ts(t=t, time_units='s')
>>> bincount = ts.count(0.1)
An epoch can be specified:
>>> ep = nap.IntervalSet(start = 100, end = 800, time_units = 's')
>>> bincount = ts.count(0.1, ep=ep)
And bincount automatically inherit ep as time support:
Source code in pynapple/core/base_class.py
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restrict
Restricts a time series object to a set of time intervals delimited by an IntervalSet object
Parameters:
Name | Type | Description | Default |
---|---|---|---|
iset |
IntervalSet
|
the IntervalSet object |
required |
Returns:
Name | Type | Description |
---|---|---|
out |
(Ts, Tsd, TsdFrame or TsdTensor)
|
Tsd object restricted to ep |
Examples:
The Ts object is restrict to the intervals defined by ep.
>>> import pynapple as nap
>>> import numpy as np
>>> t = np.unique(np.sort(np.random.randint(0, 1000, 100)))
>>> ts = nap.Ts(t=t, time_units='s')
>>> ep = nap.IntervalSet(start=0, end=500, time_units='s')
>>> newts = ts.restrict(ep)
The time support of newts automatically inherit the epochs defined by ep.
Source code in pynapple/core/base_class.py
copy
find_support
find the smallest (to a min_gap resolution) IntervalSet containing all the times in the Tsd
Parameters:
Name | Type | Description | Default |
---|---|---|---|
min_gap |
float or int
|
minimal interval between timestamps |
required |
time_units |
str
|
Time units of min gap |
's'
|
Returns:
Type | Description |
---|---|
IntervalSet
|
Description |
Source code in pynapple/core/base_class.py
get
Slice the time series from start
to end
such that all the timestamps satisfy start<=t<=end
.
If end
is None, only the timepoint closest to start
is returned.
By default, the time support doesn't change. If you want to change the time support, use the restrict
function.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
start |
float or int
|
The start (or closest time point if |
required |
end |
float or int or None
|
The end |
None
|