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Code Issues 32 Releases Wiki Activity

Fixed #26415 -- Allowed deleting nodata value on GDALBands.

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This commit is contained in:
Daniel Wiesmann
2016-03-28 19:12:10 +01:00
committed by Tim Graham
parent a7c813ba04
commit f1db8c36e9
4 changed files with 37 additions and 4 deletions
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4
django/contrib/gis/gdal/prototypes/raster.py
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@@ -62,6 +62,10 @@ get_band_ds = voidptr_output(std_call('GDALGetBandDataset'), [c_void_p])
get_band_datatype = int_output(std_call('GDALGetRasterDataType'), [c_void_p])
get_band_nodata_value = double_output(std_call('GDALGetRasterNoDataValue'), [c_void_p, POINTER(c_int)])
set_band_nodata_value = void_output(std_call('GDALSetRasterNoDataValue'), [c_void_p, c_double])
if GDAL_VERSION >= (2, 1):
delete_band_nodata_value = void_output(std_call('GDALDeleteRasterNoDataValue'), [c_void_p])
else:
delete_band_nodata_value = None
get_band_statistics = void_output(
std_call('GDALGetRasterStatistics'),
[

11
django/contrib/gis/gdal/raster/band.py
View File

@@ -151,9 +151,14 @@ class GDALBand(GDALBase):
"""
Sets the nodata value for this band.
"""
if not isinstance(value, (int, float)):
raise ValueError('Nodata value must be numeric.')
capi.set_band_nodata_value(self._ptr, value)
if value is None:
if not capi.delete_band_nodata_value:
raise ValueError('GDAL >= 2.1 required to delete nodata values.')
capi.delete_band_nodata_value(self._ptr)
elif not isinstance(value, (int, float)):
raise ValueError('Nodata value must be numeric or None.')
else:
capi.set_band_nodata_value(self._ptr, value)
self._flush()
def datatype(self, as_string=False):