本文整理汇总了Python中django.contrib.gis.gdal.SpatialReference.validate方法的典型用法代码示例。如果您正苦于以下问题：Python SpatialReference.validate方法的具体用法？Python SpatialReference.validate怎么用？Python SpatialReference.validate使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类django.contrib.gis.gdal.SpatialReference的用法示例。
在下文中一共展示了SpatialReference.validate方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test02_bad_wkt
# 需要导入模块: from django.contrib.gis.gdal import SpatialReference [as 别名]
# 或者: from django.contrib.gis.gdal.SpatialReference import validate [as 别名]
def test02_bad_wkt(self):
"Testing initialization on invalid WKT."
for bad in bad_srlist:
try:
srs = SpatialReference(bad)
srs.validate()
except (SRSException, GDALException):
pass
else:
self.fail('Should not have initialized on bad WKT "%s"!')示例2: data
# 需要导入模块: from django.contrib.gis.gdal import SpatialReference [as 别名]
# 或者: from django.contrib.gis.gdal.SpatialReference import validate [as 别名]
def data(self):
'''
Read the output file and provide an iterable result
'''
if not hasattr(self, '_data'):
if self.raster_obj is None:
self._data = None
return None
layer = geom_extent = geom_type = spatial_ref = geom_srid = None
# If we get here, then we have successfully determined the file type
# that was provided, using OGR. ogr_obj contains the OGR DataSource
# object, and fn contains the name of the file we read to get that.
# We only support single layer uploads, if there is more than one
# layer then we will raise an exception
driver = self.raster_obj.driver.name
layer = None
geom_extent = self.raster_obj.extent
geom_type = 99
srs = self.raster_obj.srs
geos_extent = Polygon.from_bbox(self.raster_obj.extent)
ogr_extent = geos_extent.ogr
srid = epsg = None
# User supplied SRID, so we will use that...
if self._srid:
srs = None
geom_srid = self._srid
epsg = str('EPSG:%s' % (geom_srid,))
logger.debug('Setting output SRID to %s',
epsg)
try:
srs = SpatialReference(epsg)
srs.validate()
geom_srid = srs.srid
except Exception, e:
logger.debug('Invalid SRS (or none): %s', e,
exc_info=True)
srs = None
# No SRID! Let's try to detect it
if srs and not geom_srid:
if not srs.srid:
try:
srs.identify_epsg()
logger.debug('Auto-detect of SRID yielded %s',
geom_srid)
except Exception as e:
logger.debug(
'SRID identification failed: %s', e,
exc_info=True)
else:
geom_srid = srs.srid
epsg = str('EPSG:%s' % (geom_srid,))
logger.debug('Final SRID of file is %s', geom_srid)
if srs and not geom_srid:
'''
Still no SRID - but we have an srs - so let's try to
reproject...
'''
try:
reprojection = CoordTransform(
r.srs, SpatialReference('EPSG:4326'))
ogr_extent.transform(reprojection)
geos_extent = ogr_extent.geos
geom_srid = geos_extent.srid
except Exception, e:
if logger.isEnabledFor(logging.DEBUG):
logger.exception('Failed to transform: %s', e)
raise FormatException('Unable to determine valid SRID ' +
'for this data')