In [3]:
from rasterio.windows import Window
import rasterio
with rasterio.open('/data/gdata/geotiff_file.tif') as src:
w = src.read(1, window=Window(0, 0, 512, 256))
In [4]:
print(w.shape)
(256, 512)
In [5]:
import rasterio
from rasterio.windows import Window
win = Window(256, 256, 128, 128)
with rasterio.open('/data/gdata/geotiff_file.tif') as src:
src_transform = src.transform;win_transform = src.window_transform(win)
print(src_transform)
| 30.00, 0.00, 1868454.91| | 0.00,-30.00, 5353126.27| | 0.00, 0.00, 1.00|
In [6]:
print(win_transform)
| 30.00, 0.00, 1876134.91| | 0.00,-30.00, 5345446.27| | 0.00, 0.00, 1.00|
In [7]:
from rasterio import windows
# Full window is ((0, 1000), (0, 500))
window1 = Window(10, 100, 490, 400)
window2 = Window(50, 10, 200, 140)
windows.union(window1, window2)
Out[7]:
Window(col_off=10, row_off=10, width=490, height=490)
In [8]:
windows.intersection(window1, window2)
Out[8]:
Window(col_off=50, row_off=100, width=200, height=50)
In [9]:
with rasterio.open("/data/gdata/geotiff_file.tif") as src:
for i, shape in enumerate(src.block_shapes, 1):
print((i, shape))
(1, (1, 1500)) (2, (1, 1500)) (3, (1, 1500))
In [11]:
with rasterio.open("/data/gdata/geotiff_file.tif") as src:
for ji, window in src.block_windows(1):
print((ji, window))
((0, 0), Window(col_off=0, row_off=0, width=1500, height=1)) ((1, 0), Window(col_off=0, row_off=1, width=1500, height=1)) ((2, 0), Window(col_off=0, row_off=2, width=1500, height=1)) ((3, 0), Window(col_off=0, row_off=3, width=1500, height=1)) ((4, 0), Window(col_off=0, row_off=4, width=1500, height=1)) ((5, 0), Window(col_off=0, row_off=5, width=1500, height=1)) ((6, 0), Window(col_off=0, row_off=6, width=1500, height=1)) ((7, 0), Window(col_off=0, row_off=7, width=1500, height=1)) ((8, 0), Window(col_off=0, row_off=8, width=1500, height=1)) ((9, 0), Window(col_off=0, row_off=9, width=1500, height=1)) ((10, 0), Window(col_off=0, row_off=10, width=1500, height=1)) ((11, 0), Window(col_off=0, row_off=11, width=1500, height=1)) ((12, 0), Window(col_off=0, row_off=12, width=1500, height=1)) ((13, 0), Window(col_off=0, row_off=13, width=1500, height=1)) ((14, 0), Window(col_off=0, row_off=14, width=1500, height=1)) ((15, 0), Window(col_off=0, row_off=15, width=1500, height=1)) ((16, 0), Window(col_off=0, row_off=16, width=1500, height=1)) ((17, 0), Window(col_off=0, row_off=17, width=1500, height=1)) ((18, 0), Window(col_off=0, row_off=18, width=1500, height=1)) ((19, 0), Window(col_off=0, row_off=19, width=1500, height=1)) ((20, 0), Window(col_off=0, row_off=20, width=1500, height=1)) ((21, 0), Window(col_off=0, row_off=21, width=1500, height=1)) ((22, 0), Window(col_off=0, row_off=22, width=1500, height=1)) ((23, 0), Window(col_off=0, row_off=23, width=1500, height=1)) ((24, 0), Window(col_off=0, row_off=24, width=1500, height=1)) ((25, 0), Window(col_off=0, row_off=25, width=1500, height=1)) ((26, 0), Window(col_off=0, row_off=26, width=1500, height=1)) ((27, 0), Window(col_off=0, row_off=27, width=1500, height=1)) ((28, 0), Window(col_off=0, row_off=28, width=1500, height=1)) ((29, 0), Window(col_off=0, row_off=29, width=1500, height=1)) ((30, 0), Window(col_off=0, row_off=30, width=1500, height=1)) ((31, 0), Window(col_off=0, row_off=31, width=1500, height=1)) ((32, 0), Window(col_off=0, row_off=32, width=1500, height=1)) ((33, 0), Window(col_off=0, row_off=33, width=1500, height=1)) ((34, 0), Window(col_off=0, row_off=34, width=1500, height=1)) ((35, 0), Window(col_off=0, row_off=35, width=1500, height=1)) ((36, 0), Window(col_off=0, row_off=36, width=1500, height=1)) ((37, 0), Window(col_off=0, row_off=37, width=1500, height=1)) ((38, 0), Window(col_off=0, row_off=38, width=1500, height=1)) ((39, 0), Window(col_off=0, row_off=39, width=1500, height=1)) ((40, 0), Window(col_off=0, row_off=40, width=1500, height=1)) ((41, 0), Window(col_off=0, row_off=41, width=1500, height=1)) ((42, 0), Window(col_off=0, row_off=42, width=1500, height=1)) ((43, 0), Window(col_off=0, row_off=43, width=1500, height=1)) ((44, 0), Window(col_off=0, row_off=44, width=1500, height=1)) ((45, 0), Window(col_off=0, row_off=45, width=1500, height=1)) ((46, 0), Window(col_off=0, row_off=46, width=1500, height=1)) ((47, 0), Window(col_off=0, row_off=47, width=1500, height=1)) ((48, 0), Window(col_off=0, row_off=48, width=1500, height=1)) ((49, 0), Window(col_off=0, row_off=49, width=1500, height=1)) ((50, 0), Window(col_off=0, row_off=50, width=1500, height=1)) ((51, 0), Window(col_off=0, row_off=51, width=1500, height=1)) ((52, 0), Window(col_off=0, row_off=52, width=1500, height=1)) ((53, 0), Window(col_off=0, row_off=53, width=1500, height=1)) ((54, 0), Window(col_off=0, row_off=54, width=1500, height=1)) ((55, 0), Window(col_off=0, row_off=55, width=1500, height=1)) ((56, 0), Window(col_off=0, row_off=56, width=1500, height=1)) ((57, 0), Window(col_off=0, row_off=57, width=1500, height=1)) ((58, 0), Window(col_off=0, row_off=58, width=1500, height=1)) ((59, 0), Window(col_off=0, row_off=59, width=1500, height=1)) ((60, 0), Window(col_off=0, row_off=60, width=1500, height=1)) ((61, 0), Window(col_off=0, row_off=61, width=1500, height=1)) ((62, 0), Window(col_off=0, row_off=62, width=1500, height=1)) ((63, 0), Window(col_off=0, row_off=63, width=1500, height=1)) ((64, 0), Window(col_off=0, row_off=64, width=1500, height=1)) ((65, 0), Window(col_off=0, row_off=65, width=1500, height=1)) ((66, 0), Window(col_off=0, row_off=66, width=1500, height=1)) ((67, 0), Window(col_off=0, row_off=67, width=1500, height=1)) ((68, 0), Window(col_off=0, row_off=68, width=1500, height=1)) ((69, 0), Window(col_off=0, row_off=69, width=1500, height=1)) ((70, 0), Window(col_off=0, row_off=70, width=1500, height=1)) ((71, 0), Window(col_off=0, row_off=71, width=1500, height=1)) ((72, 0), Window(col_off=0, row_off=72, width=1500, height=1)) ((73, 0), Window(col_off=0, row_off=73, width=1500, height=1)) ((74, 0), Window(col_off=0, row_off=74, width=1500, height=1)) ((75, 0), Window(col_off=0, row_off=75, width=1500, height=1)) ((76, 0), Window(col_off=0, row_off=76, width=1500, height=1)) ((77, 0), Window(col_off=0, row_off=77, width=1500, height=1)) ((78, 0), Window(col_off=0, row_off=78, width=1500, height=1)) ((79, 0), Window(col_off=0, row_off=79, width=1500, height=1)) ((80, 0), Window(col_off=0, row_off=80, width=1500, height=1)) ((81, 0), Window(col_off=0, row_off=81, width=1500, height=1)) ((82, 0), Window(col_off=0, row_off=82, width=1500, height=1)) ((83, 0), Window(col_off=0, row_off=83, width=1500, height=1)) ((84, 0), Window(col_off=0, row_off=84, width=1500, height=1)) ((85, 0), Window(col_off=0, row_off=85, width=1500, height=1)) ((86, 0), Window(col_off=0, row_off=86, width=1500, height=1)) ((87, 0), Window(col_off=0, row_off=87, width=1500, height=1)) ((88, 0), Window(col_off=0, row_off=88, width=1500, height=1)) ((89, 0), Window(col_off=0, row_off=89, width=1500, height=1)) ((90, 0), Window(col_off=0, row_off=90, width=1500, height=1)) ((91, 0), Window(col_off=0, row_off=91, width=1500, height=1)) ((92, 0), Window(col_off=0, row_off=92, width=1500, height=1)) ((93, 0), Window(col_off=0, row_off=93, width=1500, height=1)) ((94, 0), Window(col_off=0, row_off=94, width=1500, height=1)) ((95, 0), Window(col_off=0, row_off=95, width=1500, height=1)) ((96, 0), Window(col_off=0, row_off=96, width=1500, height=1)) ((97, 0), Window(col_off=0, row_off=97, width=1500, height=1)) ((98, 0), Window(col_off=0, row_off=98, width=1500, height=1)) ((99, 0), Window(col_off=0, row_off=99, width=1500, height=1)) ((100, 0), Window(col_off=0, row_off=100, width=1500, height=1)) ((101, 0), Window(col_off=0, row_off=101, width=1500, height=1)) ((102, 0), Window(col_off=0, row_off=102, width=1500, height=1)) ((103, 0), Window(col_off=0, row_off=103, width=1500, height=1)) ((104, 0), Window(col_off=0, row_off=104, width=1500, height=1)) ((105, 0), Window(col_off=0, row_off=105, width=1500, height=1)) ((106, 0), Window(col_off=0, row_off=106, width=1500, height=1)) ((107, 0), Window(col_off=0, row_off=107, width=1500, height=1)) ((108, 0), Window(col_off=0, row_off=108, width=1500, height=1)) ((109, 0), Window(col_off=0, row_off=109, width=1500, height=1)) ((110, 0), Window(col_off=0, row_off=110, width=1500, height=1)) ((111, 0), Window(col_off=0, row_off=111, width=1500, height=1)) ((112, 0), Window(col_off=0, row_off=112, width=1500, height=1)) ((113, 0), Window(col_off=0, row_off=113, width=1500, height=1)) ((114, 0), Window(col_off=0, row_off=114, width=1500, height=1)) ((115, 0), Window(col_off=0, row_off=115, width=1500, height=1)) ((116, 0), Window(col_off=0, row_off=116, width=1500, height=1)) ((117, 0), Window(col_off=0, row_off=117, width=1500, height=1)) ((118, 0), Window(col_off=0, row_off=118, width=1500, height=1)) ((119, 0), Window(col_off=0, row_off=119, width=1500, height=1)) ((120, 0), Window(col_off=0, row_off=120, width=1500, height=1)) ((121, 0), Window(col_off=0, row_off=121, width=1500, height=1)) ((122, 0), Window(col_off=0, row_off=122, width=1500, height=1)) ((123, 0), Window(col_off=0, row_off=123, width=1500, height=1)) ((124, 0), Window(col_off=0, row_off=124, width=1500, height=1)) ((125, 0), Window(col_off=0, row_off=125, width=1500, height=1)) ((126, 0), Window(col_off=0, row_off=126, width=1500, height=1)) ((127, 0), Window(col_off=0, row_off=127, width=1500, height=1)) ((128, 0), Window(col_off=0, row_off=128, width=1500, height=1)) ((129, 0), Window(col_off=0, row_off=129, width=1500, height=1)) ((130, 0), Window(col_off=0, row_off=130, width=1500, height=1)) ((131, 0), Window(col_off=0, row_off=131, width=1500, height=1)) ((132, 0), Window(col_off=0, row_off=132, width=1500, height=1)) ((133, 0), Window(col_off=0, row_off=133, width=1500, height=1)) ((134, 0), Window(col_off=0, row_off=134, width=1500, height=1)) ((135, 0), Window(col_off=0, row_off=135, width=1500, height=1)) ((136, 0), Window(col_off=0, row_off=136, width=1500, height=1)) ((137, 0), Window(col_off=0, row_off=137, width=1500, height=1)) ((138, 0), Window(col_off=0, row_off=138, width=1500, height=1)) ((139, 0), Window(col_off=0, row_off=139, width=1500, height=1)) ((140, 0), Window(col_off=0, row_off=140, width=1500, height=1)) ((141, 0), Window(col_off=0, row_off=141, width=1500, height=1)) ((142, 0), Window(col_off=0, row_off=142, width=1500, height=1)) ((143, 0), Window(col_off=0, row_off=143, width=1500, height=1)) ((144, 0), Window(col_off=0, row_off=144, width=1500, height=1)) ((145, 0), Window(col_off=0, row_off=145, width=1500, height=1)) ((146, 0), Window(col_off=0, row_off=146, width=1500, height=1)) ((147, 0), Window(col_off=0, row_off=147, width=1500, height=1)) ((148, 0), Window(col_off=0, row_off=148, width=1500, height=1)) ((149, 0), Window(col_off=0, row_off=149, width=1500, height=1)) ((150, 0), Window(col_off=0, row_off=150, width=1500, height=1)) ((151, 0), Window(col_off=0, row_off=151, width=1500, height=1)) ((152, 0), Window(col_off=0, row_off=152, width=1500, height=1)) ((153, 0), Window(col_off=0, row_off=153, width=1500, height=1)) ((154, 0), Window(col_off=0, row_off=154, width=1500, height=1)) ((155, 0), Window(col_off=0, row_off=155, width=1500, height=1)) ((156, 0), Window(col_off=0, row_off=156, width=1500, height=1)) ((157, 0), Window(col_off=0, row_off=157, width=1500, height=1)) ((158, 0), Window(col_off=0, row_off=158, width=1500, height=1)) ((159, 0), Window(col_off=0, row_off=159, width=1500, height=1)) ((160, 0), Window(col_off=0, row_off=160, width=1500, height=1)) ((161, 0), Window(col_off=0, row_off=161, width=1500, height=1)) ((162, 0), Window(col_off=0, row_off=162, width=1500, height=1)) ((163, 0), Window(col_off=0, row_off=163, width=1500, height=1)) ((164, 0), Window(col_off=0, row_off=164, width=1500, height=1)) ((165, 0), Window(col_off=0, row_off=165, width=1500, height=1)) ((166, 0), Window(col_off=0, row_off=166, width=1500, height=1)) ((167, 0), Window(col_off=0, row_off=167, width=1500, height=1)) ((168, 0), Window(col_off=0, row_off=168, width=1500, height=1)) ((169, 0), Window(col_off=0, row_off=169, width=1500, height=1)) ((170, 0), Window(col_off=0, row_off=170, width=1500, height=1)) ((171, 0), Window(col_off=0, row_off=171, width=1500, height=1)) ((172, 0), Window(col_off=0, row_off=172, width=1500, height=1)) ((173, 0), Window(col_off=0, row_off=173, width=1500, height=1)) ((174, 0), Window(col_off=0, row_off=174, width=1500, height=1)) ((175, 0), Window(col_off=0, row_off=175, width=1500, height=1)) ((176, 0), Window(col_off=0, row_off=176, width=1500, height=1)) ((177, 0), Window(col_off=0, row_off=177, width=1500, height=1)) ((178, 0), Window(col_off=0, row_off=178, width=1500, height=1)) ((179, 0), Window(col_off=0, row_off=179, width=1500, height=1)) ((180, 0), Window(col_off=0, row_off=180, width=1500, height=1)) ((181, 0), Window(col_off=0, row_off=181, width=1500, height=1)) ((182, 0), Window(col_off=0, row_off=182, width=1500, height=1)) ((183, 0), Window(col_off=0, row_off=183, width=1500, height=1)) ((184, 0), Window(col_off=0, row_off=184, width=1500, height=1)) ((185, 0), Window(col_off=0, row_off=185, width=1500, height=1)) ((186, 0), Window(col_off=0, row_off=186, width=1500, height=1)) ((187, 0), Window(col_off=0, row_off=187, width=1500, height=1)) ((188, 0), Window(col_off=0, row_off=188, width=1500, height=1)) ((189, 0), Window(col_off=0, row_off=189, width=1500, height=1)) ((190, 0), Window(col_off=0, row_off=190, width=1500, height=1)) ((191, 0), Window(col_off=0, row_off=191, width=1500, height=1)) ((192, 0), Window(col_off=0, row_off=192, width=1500, height=1)) ((193, 0), Window(col_off=0, row_off=193, width=1500, height=1)) ((194, 0), Window(col_off=0, row_off=194, width=1500, height=1)) ((195, 0), Window(col_off=0, row_off=195, width=1500, height=1)) ((196, 0), Window(col_off=0, row_off=196, width=1500, height=1)) ((197, 0), Window(col_off=0, row_off=197, width=1500, height=1)) ((198, 0), Window(col_off=0, row_off=198, width=1500, height=1)) ((199, 0), Window(col_off=0, row_off=199, width=1500, height=1)) ((200, 0), Window(col_off=0, row_off=200, width=1500, height=1)) ((201, 0), Window(col_off=0, row_off=201, width=1500, height=1)) ((202, 0), Window(col_off=0, row_off=202, width=1500, height=1)) ((203, 0), Window(col_off=0, row_off=203, width=1500, height=1)) ((204, 0), Window(col_off=0, row_off=204, width=1500, height=1)) ((205, 0), Window(col_off=0, row_off=205, width=1500, height=1)) ((206, 0), Window(col_off=0, row_off=206, width=1500, height=1)) ((207, 0), Window(col_off=0, row_off=207, width=1500, height=1)) ((208, 0), Window(col_off=0, row_off=208, width=1500, height=1)) ((209, 0), Window(col_off=0, row_off=209, width=1500, height=1)) ((210, 0), Window(col_off=0, row_off=210, width=1500, height=1)) ((211, 0), Window(col_off=0, row_off=211, width=1500, height=1)) ((212, 0), Window(col_off=0, row_off=212, width=1500, height=1)) ((213, 0), Window(col_off=0, row_off=213, width=1500, height=1)) ((214, 0), Window(col_off=0, row_off=214, width=1500, height=1)) ((215, 0), Window(col_off=0, row_off=215, width=1500, height=1)) ((216, 0), Window(col_off=0, row_off=216, width=1500, height=1)) ((217, 0), Window(col_off=0, row_off=217, width=1500, height=1)) ((218, 0), Window(col_off=0, row_off=218, width=1500, height=1)) ((219, 0), Window(col_off=0, row_off=219, width=1500, height=1)) ((220, 0), Window(col_off=0, row_off=220, width=1500, height=1)) ((221, 0), Window(col_off=0, row_off=221, width=1500, height=1)) ((222, 0), Window(col_off=0, row_off=222, width=1500, height=1)) ((223, 0), Window(col_off=0, row_off=223, width=1500, height=1)) ((224, 0), Window(col_off=0, row_off=224, width=1500, height=1)) ((225, 0), Window(col_off=0, row_off=225, width=1500, height=1)) ((226, 0), Window(col_off=0, row_off=226, width=1500, height=1)) ((227, 0), Window(col_off=0, row_off=227, width=1500, height=1)) ((228, 0), Window(col_off=0, row_off=228, width=1500, height=1)) ((229, 0), Window(col_off=0, row_off=229, width=1500, height=1)) ((230, 0), Window(col_off=0, row_off=230, width=1500, height=1)) ((231, 0), Window(col_off=0, row_off=231, width=1500, height=1)) ((232, 0), Window(col_off=0, row_off=232, width=1500, height=1)) ((233, 0), Window(col_off=0, row_off=233, width=1500, height=1)) ((234, 0), Window(col_off=0, row_off=234, width=1500, height=1)) ((235, 0), Window(col_off=0, row_off=235, width=1500, height=1)) ((236, 0), Window(col_off=0, row_off=236, width=1500, height=1)) ((237, 0), Window(col_off=0, row_off=237, width=1500, height=1)) ((238, 0), Window(col_off=0, row_off=238, width=1500, height=1)) ((239, 0), Window(col_off=0, row_off=239, width=1500, height=1)) ((240, 0), Window(col_off=0, row_off=240, width=1500, height=1)) ((241, 0), Window(col_off=0, row_off=241, width=1500, height=1)) ((242, 0), Window(col_off=0, row_off=242, width=1500, height=1)) ((243, 0), Window(col_off=0, row_off=243, width=1500, height=1)) ((244, 0), Window(col_off=0, row_off=244, width=1500, height=1)) ((245, 0), Window(col_off=0, row_off=245, width=1500, height=1)) ((246, 0), Window(col_off=0, row_off=246, width=1500, height=1)) ((247, 0), Window(col_off=0, row_off=247, width=1500, height=1)) ((248, 0), Window(col_off=0, 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row_off=800, width=1500, height=1)) ((801, 0), Window(col_off=0, row_off=801, width=1500, height=1)) ((802, 0), Window(col_off=0, row_off=802, width=1500, height=1)) ((803, 0), Window(col_off=0, row_off=803, width=1500, height=1)) ((804, 0), Window(col_off=0, row_off=804, width=1500, height=1)) ((805, 0), Window(col_off=0, row_off=805, width=1500, height=1)) ((806, 0), Window(col_off=0, row_off=806, width=1500, height=1)) ((807, 0), Window(col_off=0, row_off=807, width=1500, height=1)) ((808, 0), Window(col_off=0, row_off=808, width=1500, height=1)) ((809, 0), Window(col_off=0, row_off=809, width=1500, height=1)) ((810, 0), Window(col_off=0, row_off=810, width=1500, height=1)) ((811, 0), Window(col_off=0, row_off=811, width=1500, height=1)) ((812, 0), Window(col_off=0, row_off=812, width=1500, height=1)) ((813, 0), Window(col_off=0, row_off=813, width=1500, height=1)) ((814, 0), Window(col_off=0, row_off=814, width=1500, height=1)) ((815, 0), Window(col_off=0, row_off=815, width=1500, height=1)) ((816, 0), Window(col_off=0, row_off=816, width=1500, height=1)) ((817, 0), Window(col_off=0, row_off=817, width=1500, height=1)) ((818, 0), Window(col_off=0, row_off=818, width=1500, height=1)) ((819, 0), Window(col_off=0, row_off=819, width=1500, height=1)) ((820, 0), Window(col_off=0, row_off=820, width=1500, height=1)) ((821, 0), Window(col_off=0, row_off=821, width=1500, height=1)) ((822, 0), Window(col_off=0, row_off=822, width=1500, height=1)) ((823, 0), Window(col_off=0, row_off=823, width=1500, height=1)) ((824, 0), Window(col_off=0, row_off=824, width=1500, height=1)) ((825, 0), Window(col_off=0, row_off=825, width=1500, height=1)) ((826, 0), Window(col_off=0, row_off=826, width=1500, height=1)) ((827, 0), Window(col_off=0, row_off=827, width=1500, height=1)) ((828, 0), Window(col_off=0, row_off=828, width=1500, height=1)) ((829, 0), Window(col_off=0, row_off=829, width=1500, height=1)) ((830, 0), Window(col_off=0, row_off=830, width=1500, height=1)) ((831, 0), Window(col_off=0, row_off=831, width=1500, height=1)) ((832, 0), Window(col_off=0, row_off=832, width=1500, height=1)) ((833, 0), Window(col_off=0, row_off=833, width=1500, height=1)) ((834, 0), Window(col_off=0, row_off=834, width=1500, height=1)) ((835, 0), Window(col_off=0, row_off=835, width=1500, height=1)) ((836, 0), Window(col_off=0, row_off=836, width=1500, height=1)) ((837, 0), Window(col_off=0, row_off=837, width=1500, height=1)) ((838, 0), Window(col_off=0, row_off=838, width=1500, height=1)) ((839, 0), Window(col_off=0, row_off=839, width=1500, height=1)) ((840, 0), Window(col_off=0, row_off=840, width=1500, height=1)) ((841, 0), Window(col_off=0, row_off=841, width=1500, height=1)) ((842, 0), Window(col_off=0, row_off=842, width=1500, height=1)) ((843, 0), Window(col_off=0, row_off=843, width=1500, height=1)) ((844, 0), Window(col_off=0, row_off=844, width=1500, height=1)) ((845, 0), Window(col_off=0, row_off=845, width=1500, height=1)) ((846, 0), Window(col_off=0, row_off=846, width=1500, height=1)) ((847, 0), Window(col_off=0, row_off=847, width=1500, height=1)) ((848, 0), Window(col_off=0, row_off=848, width=1500, height=1)) ((849, 0), Window(col_off=0, row_off=849, width=1500, height=1)) ((850, 0), Window(col_off=0, row_off=850, width=1500, height=1)) ((851, 0), Window(col_off=0, row_off=851, width=1500, height=1)) ((852, 0), Window(col_off=0, row_off=852, width=1500, height=1)) ((853, 0), Window(col_off=0, row_off=853, width=1500, height=1)) ((854, 0), Window(col_off=0, row_off=854, width=1500, height=1)) ((855, 0), Window(col_off=0, row_off=855, width=1500, height=1)) ((856, 0), Window(col_off=0, row_off=856, width=1500, height=1)) ((857, 0), Window(col_off=0, row_off=857, width=1500, height=1)) ((858, 0), Window(col_off=0, row_off=858, width=1500, height=1)) ((859, 0), Window(col_off=0, row_off=859, width=1500, height=1)) ((860, 0), Window(col_off=0, row_off=860, width=1500, height=1)) ((861, 0), Window(col_off=0, row_off=861, width=1500, height=1)) ((862, 0), Window(col_off=0, row_off=862, width=1500, height=1)) ((863, 0), Window(col_off=0, row_off=863, width=1500, height=1)) ((864, 0), Window(col_off=0, row_off=864, width=1500, height=1)) ((865, 0), Window(col_off=0, row_off=865, width=1500, height=1)) ((866, 0), Window(col_off=0, row_off=866, width=1500, height=1)) ((867, 0), Window(col_off=0, row_off=867, width=1500, height=1)) ((868, 0), Window(col_off=0, row_off=868, width=1500, height=1)) ((869, 0), Window(col_off=0, row_off=869, width=1500, height=1)) ((870, 0), Window(col_off=0, row_off=870, width=1500, height=1)) ((871, 0), Window(col_off=0, row_off=871, width=1500, height=1)) ((872, 0), Window(col_off=0, row_off=872, width=1500, height=1)) ((873, 0), Window(col_off=0, row_off=873, width=1500, height=1)) ((874, 0), Window(col_off=0, row_off=874, width=1500, height=1)) ((875, 0), Window(col_off=0, row_off=875, width=1500, height=1)) ((876, 0), Window(col_off=0, row_off=876, width=1500, height=1)) ((877, 0), Window(col_off=0, row_off=877, width=1500, height=1)) ((878, 0), Window(col_off=0, row_off=878, width=1500, height=1)) ((879, 0), Window(col_off=0, row_off=879, width=1500, height=1)) ((880, 0), Window(col_off=0, row_off=880, width=1500, height=1)) ((881, 0), Window(col_off=0, row_off=881, width=1500, height=1)) ((882, 0), Window(col_off=0, row_off=882, width=1500, height=1)) ((883, 0), Window(col_off=0, row_off=883, width=1500, height=1)) ((884, 0), Window(col_off=0, row_off=884, width=1500, height=1)) ((885, 0), Window(col_off=0, row_off=885, width=1500, height=1)) ((886, 0), Window(col_off=0, row_off=886, width=1500, height=1)) ((887, 0), Window(col_off=0, row_off=887, width=1500, height=1)) ((888, 0), Window(col_off=0, row_off=888, width=1500, height=1)) ((889, 0), Window(col_off=0, row_off=889, width=1500, height=1)) ((890, 0), Window(col_off=0, row_off=890, width=1500, height=1)) ((891, 0), Window(col_off=0, row_off=891, width=1500, height=1)) ((892, 0), Window(col_off=0, row_off=892, width=1500, height=1)) ((893, 0), Window(col_off=0, row_off=893, width=1500, height=1)) ((894, 0), Window(col_off=0, row_off=894, width=1500, height=1)) ((895, 0), Window(col_off=0, row_off=895, width=1500, height=1)) ((896, 0), Window(col_off=0, row_off=896, width=1500, height=1)) ((897, 0), Window(col_off=0, row_off=897, width=1500, height=1)) ((898, 0), Window(col_off=0, row_off=898, width=1500, height=1)) ((899, 0), Window(col_off=0, row_off=899, width=1500, height=1))
块窗口本身可以从块窗口功能中获得。 此函数返回一个迭代器，该迭代器生成一对值。第二个是一个窗口元组，可用于调用 read 或 write . 第一个是数据集所有块中该块的行索引和列索引对。
您可以像这样从一个文件块读取数据窗口。
In [12]:
with rasterio.open("/data/gdata/geotiff_file.tif") as src:
for ji, window in src.block_windows(1):
r = src.read(1, window=window)
print(r.shape)
break
(1, 1500)
培育良好的文件具有相同的阻塞带，但gdal允许使用其他方法，最好在代码中测试这种假设。
In [13]:
with rasterio.open("/data/gdata/geotiff_file.tif") as src:
assert len(set(src.block_shapes)) == 1
for ji, window in src.block_windows(1):
b, g, r = (src.read(k, window=window) for k in (1, 1, 1))
print((ji, r.shape, g.shape, b.shape))
break
((0, 0), (1, 1500), (1, 1500), (1, 1500))
Block_Shapes属性是块形状和 set(src.block_shapes) 为您提供一组独特的形状。断言集合中只有一个项实际上与断言所有带区都具有相同的块结构相同。如果有，您可以对每个窗口使用相同的窗口。
数据集对象提供对栅格数据文件的读、写和写访问，并通过调用 rasterio.open() . 这个函数模仿了python的内置 open() 它返回的数据集对象是模仿python file 物体。
In [14]:
import rasterio
src = rasterio.open('/data/gdata/geotiff_file.tif')
src
Out[14]:
<open DatasetReader name='/data/gdata/geotiff_file.tif' mode='r'>
In [15]:
src.name
Out[15]:
'/data/gdata/geotiff_file.tif'
In [16]:
src.mode
Out[16]:
'r'
In [17]:
src.closed
Out[17]:
False
数据集通常有一个或多个带（或层）。按照gdal约定，这些索引从数字1开始。文件的第一个波段可以这样读取：
In [18]:
array = src.read(1)
array.shape
Out[18]:
(900, 1500)
返回的对象是二维numpy ndarray。该数组在python提示下的表示是一个摘要；用于测试的rasterio geotiff文件在角中有0个值，但在其他地方有非零的值。
In [19]:
from matplotlib import pyplot
pyplot.imshow(array, cmap='pink')
pyplot.show()
输入数据集的所有带区都可以读取为三维数据数组，而不是读取单个带区。注意，3个轴的解释是 (bands, rows, columns) . 见 图像处理软件 有关如何转换为某些软件预期的顺序的详细信息。
In [20]:
array = src.read()
array.shape
Out[20]:
(3, 900, 1500)
要读取数据集较小的块，请参阅 开窗读写 .
数据集所有带区的索引、numpy数据类型和nodata值都可以从 indexes ， dtypes 和 nodatavals 属性。
In [21]:
for i, dtype, nodataval in zip(src.indexes, src.dtypes, src.nodatavals):
print(i, dtype, nodataval)
1 uint8 None 2 uint8 None 3 uint8 None
In [22]:
import rasterio
src = rasterio.open("/data/gdata/geotiff_file.tif")
src.tags()
Out[22]:
{'AREA_OR_POINT': 'Area', 'PyramidResamplingType': 'NEAREST'}
数据集的波段也可能有标记。以下是第一个波段的默认命名空间中的标记，将波段索引作为参数传递给 tags() 。
In [23]:
src.tags(ns='IMAGE_STRUCTURE')
Out[23]:
{'INTERLEAVE': 'PIXEL'}