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from nose.tools import assert_equal from numpy.testing import assert_almost_equal from matplotlib.transforms import Affine2D import numpy as np def test_Affine2D_from_values(): points = [ [0,0], [10,20], [-1,0], ] t = Affine2D.from_values(1,0,0,0,0,0) actual = t.transform(points) expected = np.array( [[0,0],[10,0],[-1,0]] ) assert_almost_equal(actual,expected) t = Affine2D.from_values(0,2,0,0,0,0) actual = t.transform(points) expected = np.array( [[0,0],[0,20],[0,-2]] ) assert_almost_equal(actual,expected) t = Affine2D.from_values(0,0,3,0,0,0) actual = t.transform(points) expected = np.array( [[0,0],[60,0],[0,0]] ) assert_almost_equal(actual,expected) t = Affine2D.from_values(0,0,0,4,0,0) actual = t.transform(points) expected = np.array( [[0,0],[0,80],[0,0]] ) assert_almost_equal(actual,expected) t = Affine2D.from_values(0,0,0,0,5,0) actual = t.transform(points) expected = np.array( [[5,0],[5,0],[5,0]] ) assert_almost_equal(actual,expected) t = Affine2D.from_values(0,0,0,0,0,6) actual = t.transform(points) expected = np.array( [[0,6],[0,6],[0,6]] ) assert_almost_equal(actual,expected)
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