calculate_grid_size()

raster2pgsql.calculate_grid_size	(		raster_size,
			block_size
	)

Dimensions of grid made up with blocks of requested size

Definition at line 570 of file raster2pgsql.py.

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)))