#37055: GDALRaster fails when using Float and NBITS=16
-------------------------------------+-------------------------------------
Reporter: Marcos Sánchez | Type: Bug
Provencio |
Status: new | Component: GIS
Version: 5.2 | Severity: Normal
Keywords: | Triage Stage:
| Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
GDALRaster creation fails when trying to use NBITS=16 (thus creating a
Float16 dataset)
{{{
In [39]: >>> import tempfile
rstfile = tempfile.NamedTemporaryFile(suffix=".tif")
rst = GDALRaster(
{
"driver": "GTiff",
"name": rstfile.name,
"srid": 4326,
"width": 255,
"height": 255,
"nr_of_bands": 1,
"papsz_options":dict(NBITS=32)
}
)
In [40]: rst.bands[0].data()
Out[40]:
array([[0., 0., 0., ..., 0., 0., 0.],
[0., 0., 0., ..., 0., 0., 0.],
[0., 0., 0., ..., 0., 0., 0.],
...,
[0., 0., 0., ..., 0., 0., 0.],
[0., 0., 0., ..., 0., 0., 0.],
[0., 0., 0., ..., 0., 0., 0.]], dtype=float32)
}}}
But this fails:
{{{
In [42]: rst.bands[0].data()
---------------------------------------------------------------------------
IndexError Traceback (most recent call
last)
Cell In[42], line 1
----> 1 rst.bands[0].data()
File ~/v_django4/lib/python3.14/site-
packages/django/contrib/gis/gdal/raster/band.py:207, in
GDALBand.data(self, data, offset, size, shape, as_memoryview)
204 raise ValueError("Size is larger than raster.")
206 # Create ctypes type array generator
--> 207 ctypes_array = GDAL_TO_CTYPES[self.datatype()] * (shape[0] *
shape[1])
209 if data is None:
210 # Set read mode
211 access_flag = 0
IndexError: list index out of range
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/37055>
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