calculate_grid_size()

def raster2pgsql.calculate_grid_size	(		raster_size,
			block_size
	)

Dimensions of grid made up with blocks of requested size

Definition at line 561 of file raster2pgsql.py.

Referenced by wkblify_raster_level().

def calculate_grid_size(raster_size, block_size):
    """Dimensions of grid made up with blocks of requested size"""

    # Exact number of grid dimensions
    nx = float(raster_size[0]) / float(block_size[0])
    ny = float(raster_size[1]) / float(block_size[1])

    return ( int(math.ceil(nx)), int(math.ceil(ny)))

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