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1# -*- coding: utf-8 -*-
2"""
3Package with factor rotation algorithms.
5This file contains a Python version of the gradient projection rotation
6algorithms (GPA) developed by Bernaards, C.A. and Jennrich, R.I.
7The code is based on the Matlab version of the code developed Bernaards, C.A.
8and Jennrich, R.I. and is ported and made available with permission of the
9authors.
11Additionally, several analytic rotation methods are implemented.
13References
14----------
15[1] Bernaards, C.A. and Jennrich, R.I. (2005) Gradient Projection Algorithms and Software for Arbitrary Rotation Criteria in Factor Analysis. Educational and Psychological Measurement, 65 (5), 676-696.
17[2] Jennrich, R.I. (2001). A simple general procedure for orthogonal rotation. Psychometrika, 66, 289-306.
19[3] Jennrich, R.I. (2002). A simple general method for oblique rotation. Psychometrika, 67, 7-19.
21[4] http://www.stat.ucla.edu/research/gpa/matlab.net
23[5] http://www.stat.ucla.edu/research/gpa/GPderfree.txt
24"""
25from ._wrappers import rotate_factors
27from ._analytic_rotation import target_rotation, procrustes, promax
28from statsmodels.tools._testing import PytestTester
30__all__ = ['rotate_factors', 'target_rotation', 'procrustes', 'promax',
31 'test']
33test = PytestTester()