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Improved explanation of fromarray "mode" parameter

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Andrew Murray 2021-11-23 20:35:35 +11:00
parent ae7c2cb2e6
commit cea84e6b2d
1 changed files with 16 additions and 3 deletions
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19
src/PIL/Image.py
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@ -2773,7 +2773,7 @@ def fromarray(obj, mode=None):
from PIL import Image from PIL import Image
import numpy as np import numpy as np
im = Image.open('hopper.jpg') im = Image.open("hopper.jpg")
a = np.asarray(im) a = np.asarray(im)
Then this can be used to convert it to a Pillow image:: Then this can be used to convert it to a Pillow image::
@ -2781,8 +2781,21 @@ def fromarray(obj, mode=None):
im = Image.fromarray(a) im = Image.fromarray(a)
:param obj: Object with array interface :param obj: Object with array interface
:param mode: Mode to use (will be determined from type if None) :param mode: Optional mode to use when reading ``obj``. Will be determined from
See: :ref:`concept-modes`. type if ``None``.
This will not be used to convert the data after reading, but will be used to
change how the data is read::
from PIL import Image
import numpy as np
a = np.full((1, 1), 300)
im = Image.fromarray(a, mode="L")
im.getpixel((0, 0)) # 44
im = Image.fromarray(a, mode="RGB")
im.getpixel((0, 0)) # (44, 1, 0)
See: :ref:`concept-modes` for general information about modes.
:returns: An image object. :returns: An image object.
.. versionadded:: 1.1.6 .. versionadded:: 1.1.6