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"""Unittests for rasterio.plot"""
import pytest
plt = pytest.importorskip("matplotlib.pyplot")
import matplotlib
import numpy as np
import rasterio
from rasterio.plot import show, show_hist, get_plt, plotting_extent, adjust_band
from rasterio.enums import ColorInterp
matplotlib.use("agg")
plt.show = lambda: None
def test_show_raster_band():
"""Test plotting a single raster band."""
with rasterio.open('tests/data/RGB.byte.tif') as src:
show((src, 1))
fig = plt.gcf()
plt.close(fig)
def test_show_raster_mult_bands():
"""Test multiple bands plotting."""
with rasterio.open('tests/data/RGB.byte.tif') as src:
show((src, (1, 2, 3)))
fig = plt.gcf()
plt.close(fig)
def test_show_raster_object():
"""Test plotting a raster object."""
with rasterio.open('tests/data/RGB.byte.tif') as src:
show(src)
fig = plt.gcf()
plt.close(fig)
def test_show_raster_float():
"""Test plotting a raster object with float data."""
with rasterio.open('tests/data/float.tif') as src:
show(src)
fig = plt.gcf()
plt.close(fig)
def test_show_cmyk_interp(tmpdir):
"""A CMYK TIFF has cyan, magenta, yellow, black bands."""
with rasterio.open('tests/data/RGB.byte.tif') as src:
profile = src.profile
profile['photometric'] = "CMYK"
profile['count'] = 4
del profile["nodata"]
tiffname = str(tmpdir.join('foo.tif'))
with rasterio.open(tiffname, 'w', **profile) as dst:
assert dst.colorinterp == (
ColorInterp.cyan,
ColorInterp.magenta,
ColorInterp.yellow,
ColorInterp.black)
with rasterio.open(tiffname) as src:
try:
show(src)
fig = plt.gcf()
plt.close(fig)
except ImportError:
pass
def test_show_raster_no_bounds():
"""
This test only verifies that code up to the point of plotting with
matplotlib works correctly. Tests do not exercise matplotlib.
"""
with rasterio.open('tests/data/RGB.byte.tif') as src:
try:
show((src, 1), with_bounds=False)
fig = plt.gcf()
plt.close(fig)
except ImportError:
pass
def test_show_raster_title():
"""
This test only verifies that code up to the point of plotting with
matplotlib works correctly. Tests do not exercise matplotlib.
"""
with rasterio.open('tests/data/RGB.byte.tif') as src:
try:
show((src, 1), title="insert title here")
fig = plt.gcf()
plt.close(fig)
except ImportError:
pass
def test_show_hist_large():
"""
This test only verifies that code up to the point of plotting with
matplotlib works correctly. Tests do not exercise matplotlib.
"""
try:
rand_arr = np.random.randn(10, 718, 791)
show_hist(rand_arr)
fig = plt.gcf()
plt.close(fig)
except ImportError:
pass
def test_show_raster_cmap():
"""
This test only verifies that code up to the point of plotting with
matplotlib works correctly. Tests do not exercise matplotlib.
"""
with rasterio.open('tests/data/RGB.byte.tif') as src:
try:
show((src, 1), cmap='jet')
fig = plt.gcf()
plt.close(fig)
except ImportError:
pass
def test_show_raster_ax():
"""
This test only verifies that code up to the point of plotting with
matplotlib works correctly. Tests do not exercise matplotlib.
"""
with rasterio.open('tests/data/RGB.byte.tif') as src:
try:
fig, ax = plt.subplots(1)
show((src, 1), ax=ax)
fig = plt.gcf()
plt.close(fig)
except ImportError:
pass
def test_show_array():
"""
This test only verifies that code up to the point of plotting with
matplotlib works correctly. Tests do not exercise matplotlib.
"""
with rasterio.open('tests/data/RGB.byte.tif') as src:
try:
show(src.read(1))
fig = plt.gcf()
plt.close(fig)
except ImportError:
pass
def test_show_array3D():
"""
This test only verifies that code up to the point of plotting with
matplotlib works correctly. Tests do not exercise matplotlib.
"""
with rasterio.open('tests/data/RGB.byte.tif') as src:
try:
show(src.read((1, 2, 3)))
fig = plt.gcf()
plt.close(fig)
except ImportError:
pass
def test_show_hist():
"""
This test only verifies that code up to the point of plotting with
matplotlib works correctly. Tests do not exercise matplotlib.
"""
with rasterio.open('tests/data/RGB.byte.tif') as src:
try:
show_hist((src, 1), bins=256)
fig = plt.gcf()
plt.close(fig)
except ImportError:
pass
try:
show_hist(src.read(), bins=256)
fig = plt.gcf()
plt.close(fig)
except ImportError:
pass
try:
fig, ax = plt.subplots(1)
show_hist(src.read(), bins=256, ax=ax)
fig = plt.gcf()
plt.close(fig)
except ImportError:
pass
try:
show_hist(src.read(), range=[0, 255])
fig = plt.gcf()
plt.close(fig)
except ImportError:
pass
try:
show_hist(src)
fig = plt.gcf()
ax = plt.gca()
assert ax.get_legend_handles_labels()[1] == ["1", "2", "3"]
plt.close(fig)
except ImportError:
pass
def test_show_hist_mplargs():
"""
This test only verifies that code up to the point of plotting with
matplotlib works correctly. Tests do not exercise matplotlib.
"""
with rasterio.open('tests/data/RGB.byte.tif') as src:
try:
show_hist(src, bins=50, lw=0.0, stacked=False, alpha=0.3,
histtype='stepfilled', title="World Histogram overlaid",
range=[0, 255])
fig = plt.gcf()
plt.close(fig)
except ImportError:
pass
def test_show_contour():
"""
This test only verifies that code up to the point of plotting with
matplotlib works correctly. Tests do not exercise matplotlib.
"""
with rasterio.open('tests/data/RGB.byte.tif') as src:
try:
show((src, 1), contour=True)
fig = plt.gcf()
plt.close(fig)
except ImportError:
pass
def test_show_contour_mplargs():
"""
This test only verifies that code up to the point of plotting with
matplotlib works correctly. Tests do not exercise matplotlib.
"""
with rasterio.open('tests/data/RGB.byte.tif') as src:
try:
show((src, 1), contour=True,
levels=[25, 125], colors=['white', 'red'], linewidths=4,
contour_label_kws=dict(fontsize=18, fmt="%1.0f", inline_spacing=15, use_clabeltext=True))
fig = plt.gcf()
plt.close(fig)
except ImportError:
pass
def test_get_plt():
"""
This test only verifies that code up to the point of plotting with
matplotlib works correctly. Tests do not exercise matplotlib.
"""
with rasterio.open('tests/data/RGB.byte.tif'):
try:
assert plt == get_plt()
except ImportError:
pass
def test_plt_transform():
with rasterio.open('tests/data/RGB.byte.tif') as src:
show(src.read(), transform=src.transform)
show(src.read(1), transform=src.transform)
def test_plotting_extent():
from rasterio.plot import reshape_as_image
expected = (101985.0, 339315.0, 2611485.0, 2826915.0)
with rasterio.open('tests/data/RGB.byte.tif') as src:
assert plotting_extent(src) == expected
assert plotting_extent(
reshape_as_image(src.read()), transform=src.transform) == expected
assert plotting_extent(
src.read(1), transform=src.transform) == expected
# array requires a transform
with pytest.raises(ValueError):
plotting_extent(src.read(1))
def test_plot_normalize():
a = np.linspace(1, 6, 10)
b = adjust_band(a, 'linear')
np.testing.assert_array_almost_equal(np.linspace(0, 1, 10), b)
def test_issue3007():
"""Don't squeeze further than 2D."""
with rasterio.open('tests/data/RGB.byte.tif') as src:
arr = src.read(1)[0:1, :]
assert arr.shape == (1, 791)
show(arr)
fig = plt.gcf()
plt.close(fig)
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