本文整理匯總了Python中rasterio.windows.Window.round_offsets方法的典型用法代碼示例。如果您正苦於以下問題：Python Window.round_offsets方法的具體用法？Python Window.round_offsets怎麽用？Python Window.round_offsets使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類rasterio.windows.Window的用法示例。
在下文中一共展示了Window.round_offsets方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: process_tile
# 需要導入模塊: from rasterio.windows import Window [as 別名]
# 或者: from rasterio.windows.Window import round_offsets [as 別名]
def process_tile(tile):
"""Process a single MBTiles tile
Parameters
----------
tile : mercantile.Tile
Returns
-------
tile : mercantile.Tile
The input tile.
bytes : bytearray
Image bytes corresponding to the tile.
"""
global base_kwds, resampling, src
# Get the bounds of the tile.
ulx, uly = mercantile.xy(
*mercantile.ul(tile.x, tile.y, tile.z))
lrx, lry = mercantile.xy(
*mercantile.ul(tile.x + 1, tile.y + 1, tile.z))
kwds = base_kwds.copy()
kwds['transform'] = transform_from_bounds(ulx, lry, lrx, uly,
kwds['width'], kwds['height'])
src_nodata = kwds.pop('src_nodata', None)
dst_nodata = kwds.pop('dst_nodata', None)
warnings.simplefilter('ignore')
with MemoryFile() as memfile:
with memfile.open(**kwds) as tmp:
# determine window of source raster corresponding to the tile
# image, with small buffer at edges
try:
west, south, east, north = transform_bounds(TILES_CRS, src.crs, ulx, lry, lrx, uly)
tile_window = window_from_bounds(west, south, east, north, transform=src.transform)
adjusted_tile_window = Window(
tile_window.col_off - 1, tile_window.row_off - 1,
tile_window.width + 2, tile_window.height + 2)
tile_window = adjusted_tile_window.round_offsets().round_shape()
# if no data in window, skip processing the tile
if not src.read_masks(1, window=tile_window).any():
return tile, None
except ValueError:
log.info("Tile %r will not be skipped, even if empty. This is harmless.", tile)
reproject(rasterio.band(src, tmp.indexes),
rasterio.band(tmp, tmp.indexes),
src_nodata=src_nodata,
dst_nodata=dst_nodata,
num_threads=1,
resampling=resampling)
return tile, memfile.read()