本文整理汇总了Python中rasterio.windows.Window.round_offsets方法的典型用法代码示例。如果您正苦于以下问题：Python Window.round_offsets方法的具体用法？Python Window.round_offsets怎么用？Python Window.round_offsets使用的例子？那么恭喜您, 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rasterio.windows.Window的用法示例。
在下文中一共展示了Window.round_offsets方法的1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: process_tile
# 需要导入模块: from rasterio.windows import Window [as 别名]
# 或者: from rasterio.windows.Window import round_offsets [as 别名]
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()