PostGIS  2.1.10dev-r@@SVN_REVISION@@
def raster2pgsql.calculate_overviews (   ds,
  band_from = None,
  band_to = None 
)

RASTER OPERATIONS.

Definition at line 480 of file raster2pgsql.py.

480 def calculate_overviews(ds, band_from = None, band_to = None):
481  assert ds is not None
482 
483  if band_from is None:
484  band_from = 0
485  if band_to is None:
486  band_to = ds.RasterCount
487 
488  assert band_to <= ds.RasterCount,'Failed checking band_to=%d <= RasterCount=%d' % (band_to,ds.RasterCount)
489  assert band_from <= band_to
490 
491  nov = 0
492  for i in range(band_from, band_to + 1):
493  n = ds.GetRasterBand(i).GetOverviewCount()
494  if 0 == nov:
495  nov = n
496  assert n == nov, 'Number of raster overviews is not the same for all bands'
497 
498  return nov
499 
def calculate_overviews
RASTER OPERATIONS.