def download_sentinel_data(item, bands):
# get paths w.r.t. id
paths = file_paths_wrt_id(item._data["id"])
# get meta info on path, to be used by boto3
info_response = requests.get(item.assets["info"]["href"])
info_response_json = json.loads(info_response.text)
# save bands generically
for band in bands:
# pass band id in metadata
info_response_json["band_id"] = band
band_filename = paths["b%s" % band]
if not data_file_exists(band_filename):
save_to_file(
item.assets["B0{}".format(band)]["href"],
band_filename,
item._data["id"],
"✗ required data doesn't exist, downloading %s %s"
% (band_tag_map["b" + str(band)], "band"),
meta=info_response_json,
)
else:
rprint(
"[green] ✓ ",
"required data exists for {} band".format(
band_tag_map["b" + str(band)]
),
)
return item._data["id"]
def preview_satellite_image(item):
paths = file_paths_wrt_id(item._data["id"])
# download image and save it in directory
if not data_file_exists(paths["preview"]):
save_to_file(
item.assets["thumbnail"]["href"],
paths["preview"],
item._data["id"],
"✗ preview data doesn't exist, downloading image",
)
else:
rprint("[green] ✓ ", "required data exists for preview image")
# print success info
rprint("[blue]Preview image saved at:[/blue]")
print(paths["preview"])
# prompt a confirm option
response = input(
"Are you sure you want to see an enhanced version of the image at the path shown above? [Y/n]"
)
return handle_prompt_response(response)
def download_landsat_data(landsat_item, bands):
# get paths w.r.t. id
paths = file_paths_wrt_id(landsat_item._data["id"])
# save bands generically
for band in bands:
band_filename = paths["b%s" % band]
if not data_file_exists(band_filename):
save_to_file(
landsat_item.assets["B{}".format(band)]["href"],
band_filename,
landsat_item._data["id"],
"✗ required data doesn't exist, downloading %s %s" %
(band_tag_map["b" + str(band)], "band"),
)
else:
rprint(
"[green] ✓ ",
"required data exists for {} band".format(
band_tag_map["b" + str(band)]),
)
return landsat_item._data["id"]