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Original file line number | Diff line number | Diff line change |
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import argparse | ||
import ee | ||
import pandas as pd | ||
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# Dongdong Kong | ||
# js版本已经测试通过 | ||
# 这是GPT3.5自动翻译的代码,可能会存在bug。 | ||
# https://code.earthengine.google.com/027ef28c2f7f304be6c7ebed95f5e1cc?noload=1 | ||
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# Initialize the Earth Engine library | ||
ee.Initialize() | ||
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def image_extract_points(img, points, proj=None, set_date=False): | ||
if proj == None: | ||
proj = img.projection().getInfo() | ||
options = { | ||
'collection': points, | ||
'reducer': 'first', | ||
'crs': proj['crs'], | ||
'crsTransform': proj['transform'], | ||
'tileScale': 16 | ||
} | ||
date = ee.Date(img.get('system:time_start')).format('yyyy-MM-dd') | ||
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def tidy_props(f): | ||
f = ee.Feature(None).copyProperties(f) | ||
if set_date: | ||
f = f.set('date', date) | ||
return f | ||
return img.reduceRegions(**options).map(tidy_props) | ||
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def col_extract_points(col, task, points): | ||
proj = col.first().select(0).projection().getInfo() | ||
res = col.map(lambda img: image_extract_points( | ||
img, points, proj, set_date=True)).flatten() | ||
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ee.batch.Export.table.toDrive( | ||
collection=res, | ||
description=task, | ||
folder="gee", | ||
fileNamePrefix=task, | ||
fileFormat="GeoJSON" | ||
).start() | ||
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def export_image(img, task, prefix=""): | ||
task = prefix + task | ||
proj = img.projection().getInfo() | ||
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# Export the image to Drive as a GeoTIFF file | ||
ee.batch.Export.image.toDrive( | ||
image=img, | ||
description=task, | ||
folder="gee", | ||
crs=proj['crs'], | ||
crsTransform=proj['transform'], | ||
maxPixels=1e13, | ||
fileNamePrefix=task, | ||
fileFormat='GeoTIFF' | ||
).start() | ||
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def shp2df(fc, outfile=None): | ||
data = fc.getInfo().get('features') | ||
props = [x["properties"] for x in data] | ||
df = pd.DataFrame(props) | ||
if None != outfile: | ||
df.to_csv(outfile, index=False) | ||
return df | ||
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def hello(): | ||
print("Hello, World!") |
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