def test_box_size():
"""Test calculation of box sizes."""
# No points. Box size should be 1,1.
assert_allclose(_box_size([]), (1.0, 1.0))
# Create one point. Box size should be 1,1.
point = [(0, 0)]
assert_allclose(_box_size(point), (1.0, 1.0))
# Create two points. Box size should be 0.5,1.
points = [(0.25, 0.5), (0.75, 0.5)]
assert_allclose(_box_size(points), (0.5, 1.0))
# Create three points. Box size should be (0.5, 0.5).
points = [(0.25, 0.25), (0.75, 0.25), (0.5, 0.75)]
assert_allclose(_box_size(points), (0.5, 0.5))
# Create a grid of points. Box size should be (0.1, 0.1).
x, y = np.meshgrid(np.linspace(-0.5, 0.5, 11), np.linspace(-0.5, 0.5, 11))
x, y = x.ravel(), y.ravel()
assert_allclose(_box_size(np.c_[x, y]), (0.1, 0.1))
# Create a random set of points. This should never break the function.
rng = np.random.RandomState(42)
points = rng.rand(100, 2)
width, height = _box_size(points)
assert width is not None
assert height is not None
# Test specifying an existing width.
points = [(0.25, 0.25), (0.75, 0.25), (0.5, 0.75)]
assert_allclose(_box_size(points, width=0.4), (0.4, 0.5))
# Test specifying an existing width that has influence on the calculated
# height.
points = [(0.25, 0.25), (0.75, 0.25), (0.5, 0.75)]
assert_allclose(_box_size(points, width=0.2), (0.2, 1.0))
# Test specifying an existing height.
points = [(0.25, 0.25), (0.75, 0.25), (0.5, 0.75)]
assert_allclose(_box_size(points, height=0.4), (0.5, 0.4))
# Test specifying an existing height that has influence on the calculated
# width.
points = [(0.25, 0.25), (0.75, 0.45), (0.5, 0.75)]
assert_allclose(_box_size(points, height=0.1), (1.0, 0.1))
# Test specifying both width and height. The function should simply return
# these.
points = [(0.25, 0.25), (0.75, 0.45), (0.5, 0.75)]
assert_array_equal(_box_size(points, width=0.1, height=0.1), (0.1, 0.1))
# Test specifying a width that will cause unfixable horizontal overlap and
# essentially breaks the function (height will be 0).
points = [(0.25, 0.25), (0.75, 0.25), (0.5, 0.75)]
assert_array_equal(_box_size(points, width=1), (1, 0))
# Test adding some padding.
# Create three points. Box size should be a little less than (0.5, 0.5).
points = [(0.25, 0.25), (0.75, 0.25), (0.5, 0.75)]
assert_allclose(_box_size(points, padding=0.1), (0.9 * 0.5, 0.9 * 0.5))
def test_box_size():
"""Test calculation of box sizes."""
# No points. Box size should be 1,1.
assert_allclose(_box_size([]), (1.0, 1.0))
# Create one point. Box size should be 1,1.
point = [(0, 0)]
assert_allclose(_box_size(point), (1.0, 1.0))
# Create two points. Box size should be 0.5,1.
points = [(0.25, 0.5), (0.75, 0.5)]
assert_allclose(_box_size(points), (0.5, 1.0))
# Create three points. Box size should be (0.5, 0.5).
points = [(0.25, 0.25), (0.75, 0.25), (0.5, 0.75)]
assert_allclose(_box_size(points), (0.5, 0.5))
# Create a grid of points. Box size should be (0.1, 0.1).
x, y = np.meshgrid(np.linspace(-0.5, 0.5, 11), np.linspace(-0.5, 0.5, 11))
x, y = x.ravel(), y.ravel()
assert_allclose(_box_size(np.c_[x, y]), (0.1, 0.1))
# Create a random set of points. This should never break the function.
rng = np.random.RandomState(42)
points = rng.rand(100, 2)
width, height = _box_size(points)
assert_true(width is not None)
assert_true(height is not None)
# Test specifying an existing width.
points = [(0.25, 0.25), (0.75, 0.25), (0.5, 0.75)]
assert_allclose(_box_size(points, width=0.4), (0.4, 0.5))
# Test specifying an existing width that has influence on the calculated
# height.
points = [(0.25, 0.25), (0.75, 0.25), (0.5, 0.75)]
assert_allclose(_box_size(points, width=0.2), (0.2, 1.0))
# Test specifying an existing height.
points = [(0.25, 0.25), (0.75, 0.25), (0.5, 0.75)]
assert_allclose(_box_size(points, height=0.4), (0.5, 0.4))
# Test specifying an existing height that has influence on the calculated
# width.
points = [(0.25, 0.25), (0.75, 0.45), (0.5, 0.75)]
assert_allclose(_box_size(points, height=0.1), (1.0, 0.1))
# Test specifying both width and height. The function should simply return
# these.
points = [(0.25, 0.25), (0.75, 0.45), (0.5, 0.75)]
assert_array_equal(_box_size(points, width=0.1, height=0.1), (0.1, 0.1))
# Test specifying a width that will cause unfixable horizontal overlap and
# essentially breaks the function (height will be 0).
points = [(0.25, 0.25), (0.75, 0.25), (0.5, 0.75)]
assert_array_equal(_box_size(points, width=1), (1, 0))
# Test adding some padding.
# Create three points. Box size should be a little less than (0.5, 0.5).
points = [(0.25, 0.25), (0.75, 0.25), (0.5, 0.75)]
assert_allclose(_box_size(points, padding=0.1), (0.9 * 0.5, 0.9 * 0.5))