def test_start_with_moveto():
# Should be entirely clipped away to a single MOVETO
data = """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"""
verts = np.fromstring(data.decode('base64'), dtype='<i4')
verts = verts.reshape((len(verts) / 2, 2))
path = Path(verts)
segs = path.iter_segments(transforms.IdentityTransform,
clip=(0.0, 0.0, 100.0, 100.0))
segs = list(segs)
assert len(segs) == 1
assert segs[0][1] == Path.MOVETO
def test_start_with_moveto():
# Should be entirely clipped away to a single MOVETO
data = """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"""
verts = np.fromstring(data.decode('base64'), dtype='<i4')
verts = verts.reshape((len(verts) / 2, 2))
path = Path(verts)
segs = path.iter_segments(transforms.IdentityTransform, clip=(0.0, 0.0, 100.0, 100.0))
segs = list(segs)
assert len(segs) == 1
assert segs[0][1] == Path.MOVETO
def test_fft_peaks():
fig = plt.figure()
t = arange(65536)
ax = fig.add_subplot(111)
p1 = ax.plot(abs(fft(sin(2 * pi * .01 * t) * blackman(len(t)))))
path = p1[0].get_path()
transform = p1[0].get_transform()
path = transform.transform_path(path)
simplified = list(path.iter_segments(simplify=(800, 600)))
assert len(simplified) == 20
def test_fft_peaks():
fig = plt.figure()
t = np.arange(65536)
ax = fig.add_subplot(111)
p1 = ax.plot(abs(np.fft.fft(np.sin(2*np.pi*.01*t)*np.blackman(len(t)))))
path = p1[0].get_path()
transform = p1[0].get_transform()
path = transform.transform_path(path)
simplified = list(path.iter_segments(simplify=(800, 600)))
assert len(simplified) == 20
def test_fft_peaks():
fig = plt.figure()
t = arange(65536)
ax = fig.add_subplot(111)
p1 = ax.plot(abs(fft(sin(2*pi*.01*t)*blackman(len(t)))))
ax.set_xticks([])
ax.set_yticks([])
fig.savefig('fft_peaks')
path = p1[0].get_path()
transform = p1[0].get_transform()
path = transform.transform_path(path)
simplified = list(path.iter_segments(simplify=(800, 600)))
assert len(simplified) == 17
def test_sine_plus_noise():
np.random.seed(0)
x = np.sin(np.linspace(0, np.pi * 2.0, 1000)) + np.random.uniform(size=(1000,)) * 0.01
fig = plt.figure()
ax = fig.add_subplot(111)
p1 = ax.plot(x, solid_joinstyle='round', linewidth=2.0)
ax.set_xticks([])
ax.set_yticks([])
path = p1[0].get_path()
transform = p1[0].get_transform()
path = transform.transform_path(path)
simplified = list(path.iter_segments(simplify=(800, 600)))
assert len(simplified) == 876
def test_noise():
np.random.seed(0)
x = np.random.uniform(size=(5000, )) * 50
fig = plt.figure()
ax = fig.add_subplot(111)
p1 = ax.plot(x, solid_joinstyle='round', linewidth=2.0)
path = p1[0].get_path()
transform = p1[0].get_transform()
path = transform.transform_path(path)
simplified = list(path.iter_segments(simplify=(800, 600)))
assert len(simplified) == 3884
def test_noise():
np.random.seed(0)
x = np.random.uniform(size=(5000,)) * 50
fig = plt.figure()
ax = fig.add_subplot(111)
p1 = ax.plot(x, solid_joinstyle='round', linewidth=2.0)
path = p1[0].get_path()
transform = p1[0].get_transform()
path = transform.transform_path(path)
simplified = list(path.iter_segments(simplify=(800, 600)))
assert len(simplified) == 3884
def test_sine_plus_noise():
np.random.seed(0)
x = np.sin(np.linspace(0, np.pi * 2.0, 1000)) + np.random.uniform(size=(1000,)) * 0.01
fig = plt.figure()
ax = fig.add_subplot(111)
p1 = ax.plot(x, solid_joinstyle='round', linewidth=2.0)
path = p1[0].get_path()
transform = p1[0].get_transform()
path = transform.transform_path(path)
simplified = list(path.iter_segments(simplify=(800, 600)))
assert len(simplified) == 876
xlim(xmin=-0.6, xmax=0.6)
ylim(ymin=-0.6, ymax=0.6)
title("Diamond shape, with segments visible in all four corners")
figure()
np.random.seed(0)
x = np.random.uniform(size=(5000, )) * 50
rcParams['path.simplify'] = True
p1 = plot(x, solid_joinstyle='round', linewidth=2.0)
path = p1[0].get_path()
transform = p1[0].get_transform()
path = transform.transform_path(path)
simplified = list(path.iter_segments(simplify=(800, 600)))
title("Original length: %d, simplified length: %d" %
(len(path.vertices), len(simplified)))
figure()
x = np.sin(np.linspace(0, np.pi * 2.0,
1000)) + np.random.uniform(size=(1000, )) * 0.01
rcParams['path.simplify'] = True
p1 = plot(x, solid_joinstyle='round', linewidth=2.0)
path = p1[0].get_path()
transform = p1[0].get_transform()
path = transform.transform_path(path)
xlim(xmin=-0.6, xmax=0.6)
ylim(ymin=-0.6, ymax=0.6)
title("Diamond shape, with segments visible in all four corners")
figure()
np.random.seed(0)
x = np.random.uniform(size=(5000,)) * 50
rcParams['path.simplify'] = True
p1 = plot(x,solid_joinstyle='round',linewidth=2.0)
path = p1[0].get_path()
transform = p1[0].get_transform()
path = transform.transform_path(path)
simplified = list(path.iter_segments(simplify=(800, 600)))
title("Original length: %d, simplified length: %d" % (len(path.vertices), len(simplified)))
figure()
x = np.sin(np.linspace(0, np.pi * 2.0, 1000)) + np.random.uniform(size=(1000,)) * 0.01
rcParams['path.simplify'] = True
p1 = plot(x,solid_joinstyle='round',linewidth=2.0)
path = p1[0].get_path()
transform = p1[0].get_transform()
path = transform.transform_path(path)
simplified = list(path.iter_segments(simplify=(800, 600)))