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Fixed #26417 -- Allowed setting GDALBand data with partial values.

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Daniel Wiesmann 2016-03-29 14:42:35 +01:00 • committed by Tim Graham
parent 03b6947728
commit 870dd1d38b
4 changed files with 60 additions and 8 deletions
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32
docs/ref/contrib/gis/gdal.txt
View file

@ -1477,7 +1477,7 @@ blue.
``GDT_UInt32``, ``GDT_Int32``, ``GDT_Float32``, ``GDT_Float64``,
``GDT_CInt16``, ``GDT_CInt32``, ``GDT_CFloat32``, and ``GDT_CFloat64``.
.. method:: data(data=None, offset=None, size=None)
.. method:: data(data=None, offset=None, size=None, shape=None)
.. versionadded:: 1.9
@ -1490,9 +1490,17 @@ blue.
Data is written to the ``GDALBand`` if the ``data`` parameter is provided.
The input can be of one of the following types - packed string, buffer, list,
array, and NumPy array. The number of items in the input must correspond to the
total number of pixels in the band, or to the number of pixels for a specific
block of pixel values if the ``offset`` and ``size`` parameters are provided.
array, and NumPy array. The number of items in the input should normally
correspond to the total number of pixels in the band, or to the number
of pixels for a specific block of pixel values if the ``offset`` and
``size`` parameters are provided.
If the number of items in the input is different from the target pixel
block, the ``shape`` parameter must be specified. The shape is a tuple
that specifies the width and height of the input data in pixels. The
data is then replicated to update the pixel values of the selected
block. This is useful to fill an entire band with a single value, for
instance.
For example:
@ -1519,6 +1527,22 @@ blue.
[ 4, -99, -88, 7],
[ 8, -77, -66, 11],
[ 12, 13, 14, 15]], dtype=int8)
>>> bnd.data([1], shape=(1, 1))
>>> bnd.data()
array([[1, 1, 1, 1],
[1, 1, 1, 1],
[1, 1, 1, 1],
[1, 1, 1, 1]], dtype=uint8)
>>> bnd.data(range(4), shape=(1, 4))
array([[0, 0, 0, 0],
[1, 1, 1, 1],
[2, 2, 2, 2],
[3, 3, 3, 3]], dtype=uint8)
.. versionchanged:: 1.10
The ``shape`` parameter and the ability to replicate data input when
setting ``GDALBand`` data was added.
Settings
========

4
docs/releases/1.10.txt
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@ -143,6 +143,10 @@ Minor features
primary key of objects in the ``properties`` dictionary if specific fields
aren't specified.
* The ability to replicate input data on the :meth:`GDALBand.data()
<django.contrib.gis.gdal.GDALBand.data>` method was added. Band data can
now be updated with repeated values efficiently.
:mod:`django.contrib.messages`
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~