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"""
Download script for Sentinel 2 Cloudless tiles by EOX.
TODO: - use argparse to for input
- validate inputs
- cleanup
"""
import sys
import os
import tilematrix
import boto3
import click
from shapely.geometry import box
if __name__ == '__main__':
geom = box(14.0, 65.7, 19.8, 68.7) # our bounding box in lat-lng coords
zoom = 13 # tile zoom level we want
output_dir = 'tiles_superhi'
grid_file = os.path.join(output_dir, 'grid.csv')
s3 = boto3.resource('s3')
s3_bucket = s3.Bucket('eox-s2maps')
s3_options = {'RequestPayer':'requester'}
tile_pyramid = tilematrix.TilePyramid("geodetic", metatiling=2)
tiles = list(tile_pyramid.tiles_from_geom(geom, zoom))
num_tiles = len(tiles)
if not click.confirm("Going to create {} tiles. Continue?".format(num_tiles),
default=True):
sys.exit(1)
try: os.makedirs(output_dir)
except: pass
f = open(grid_file, 'w')
f.write('geom;zoom;row;col\n')
with click.progressbar(tiles) as bar:
for tile in bar:
key = 'tiles/{}/{}/{}.tif'.format(tile.zoom, tile.row, tile.col)
filename = os.path.join(output_dir, 'tile_{}_{}_{}.tif'.format(tile.zoom, tile.row, tile.col))
s3_bucket.download_file(key, filename, s3_options)
f.write('{};{};{};{}\n'.format(tile.bbox(), tile.zoom, tile.row, tile.col))
f.close()
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