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Commit 89db355

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Merge pull request #14326 from anntzer/pillowpngpalette
Correctly apply PNG palette when building ImageBase through Pillow.
2 parents 30354dd + 5873efb commit 89db355
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‎lib/matplotlib/image.py

Copy file name to clipboardExpand all lines: lib/matplotlib/image.py
+8-1Lines changed: 8 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -633,8 +633,15 @@ def set_data(self, A):
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Parameters
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----------
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A : array-like
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A : array-like or `PIL.Image.Image`
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"""
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try:
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from PIL import Image
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except ImportError:
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pass
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else:
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if isinstance(A, Image.Image):
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A = pil_to_array(A) # Needed e.g. to apply png palette.
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self._A = cbook.safe_masked_invalid(A, copy=True)
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if (self._A.dtype != np.uint8 and

‎lib/matplotlib/tests/test_image.py

Copy file name to clipboardExpand all lines: lib/matplotlib/tests/test_image.py
+11-6Lines changed: 11 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -14,7 +14,7 @@
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from numpy.testing import assert_array_equal
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from matplotlib import (
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colors, image as mimage, patches, pyplot as plt,
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colors, image as mimage, patches, pyplot as plt, style,
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rc_context, rcParams)
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from matplotlib.cbook import MatplotlibDeprecationWarning
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from matplotlib.image import (AxesImage, BboxImage, FigureImage,
@@ -117,11 +117,16 @@ def test_image_python_io():
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@check_figures_equal()
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def test_imshow_pil(fig_test, fig_ref):
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pytest.importorskip("PIL")
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img = plt.imread(os.path.join(os.path.dirname(__file__),
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'baseline_images', 'test_image', 'uint16.tif'))
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fig_test.subplots().imshow(img)
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fig_ref.subplots().imshow(np.asarray(img))
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style.use("default")
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PIL = pytest.importorskip("PIL")
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png_path = Path(__file__).parent / "baseline_images/pngsuite/basn3p04.png"
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tiff_path = Path(__file__).parent / "baseline_images/test_image/uint16.tif"
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axs = fig_test.subplots(2)
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axs[0].imshow(PIL.Image.open(png_path))
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axs[1].imshow(PIL.Image.open(tiff_path))
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axs = fig_ref.subplots(2)
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axs[0].imshow(plt.imread(str(png_path)))
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axs[1].imshow(plt.imread(tiff_path))
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def test_imread_pil_uint16():

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