ColumnConcatenator

ColumnConcatenator

class ColumnConcatenator[source]

Concatenate multivariate series to a long univariate series.

Transformer that concatenates multivariate time series/panel data into single univariate time series/panel data by concatenating each individual series on top of each other from left to right.

Uses pandas method stack() to do the concatenating

Attributes:

is_fitted

Whether fit has been called.

Examples

>>> from sktime.transformations.colconcat import ColumnConcatenator # noqa: E501
>>> import numpy as np
>>> data = np.array([[1, 2, 3],
...                  [4, 5, 6],
...                  [7, 8, 9]])
>>> concatenator = ColumnConcatenator()
>>> concatenator.fit_transform(data)
array([[1.],
       [4.],
       [7.],
       [2.],
       [5.],
       [8.],
       [3.],
       [6.],
       [9.]])

Another example with panel data.

>>> from sktime.utils._testing.panel import _make_panel
>>> panel_data = _make_panel(
...     n_columns=2,
...     n_instances=2,
...     n_timepoints=3,
... )
>>> panel_data = concatenator.fit_transform(panel_data)

Methods

check_is_fitted([method_name])	Check if the estimator has been fitted.
clone()	Obtain a clone of the object with same hyper-parameters and config.
clone_tags(estimator[, tag_names])	Clone tags from another object as dynamic override.
create_test_instance([parameter_set])	Construct an instance of the class, using first test parameter set.
create_test_instances_and_names([parameter_set])	Create list of all test instances and a list of names for them.
fit(X[, y])	Fit transformer to X, optionally to y.
fit_transform(X[, y])	Fit to data, then transform it.
get_class_tag(tag_name[, tag_value_default])	Get class tag value from class, with tag level inheritance from parents.
get_class_tags()	Get class tags from class, with tag level inheritance from parent classes.
get_config()	Get config flags for self.
get_fitted_params([deep])	Get fitted parameters.
get_param_defaults()	Get object's parameter defaults.
get_param_names([sort])	Get object's parameter names.
get_params([deep])	Get a dict of parameters values for this object.
get_tag(tag_name[, tag_value_default, ...])	Get tag value from instance, with tag level inheritance and overrides.
get_tags()	Get tags from instance, with tag level inheritance and overrides.
get_test_params([parameter_set])	Return testing parameter settings for the skbase object.
inverse_transform(X[, y])	Inverse transform X and return an inverse transformed version.
is_composite()	Check if the object is composed of other BaseObjects.
load_from_path(serial)	Load object from file location.
load_from_serial(serial)	Load object from serialized memory container.
reset()	Reset the object to a clean post-init state.
save([path, serialization_format])	Save serialized self to bytes-like object or to (.zip) file.
set_config(**config_dict)	Set config flags to given values.
set_params(**params)	Set the parameters of this object.
set_random_state([random_state, deep, ...])	Set random_state pseudo-random seed parameters for self.
set_tags(**tag_dict)	Set instance level tag overrides to given values.
transform(X[, y])	Transform X and return a transformed version.
update(X[, y, update_params])	Update transformer with X, optionally y.