Question

我正在尝试下载一次查询的所有数据。我的代码如下：

from sentinelhub import AwsProductRequest, AwsTileRequest, AwsTile, BBox, CRS
import sentinelhub

betsiboka_coords_wgs84 = [38.788605,35.781057,39.314575,36.180008]
bbox = BBox(bbox=betsiboka_coords_wgs84, crs=CRS.WGS84)
date= '2016-09-05',('2018-03-08')
for i in data:
    print(i['properties']['title'])

此代码返回： S2A_OPER_MSI_L1C_TL_EPAE_20180307T093658_A014132_T37SBD_N02.06 S2A_OPER_MSI_L1C_TL_EPAE_20180307T093658_A014132_T36SYH_N02.06 S2A_OPER_MSI_L1C_TL_EPAE_20180307T093658_A014132_T36SYJ_N02.06 S2A_OPER_MSI_L1C_TL_EPAE_20180307T093658_A014132_T37SBC_N02.06 S2B_OPER_MSI_L1C_TL_MPS__20180305T103142_A005195_T36SYH_N02.06

在返回tile_id列表之后，我使用代码提取单个tile_id的tile-name和日期（例如： S2B_OPER_MSI_L1C_TL_MPS__20170906T122033_A002621_T36STA_N02.05）：

tile_id ='S2B_OPER_MSI_L1C_TL_MPS__20170906T122033_A002621_T36STA_N02.05'
tile_name, time, aws_index = AwsTile.tile_id_to_tile(tile_id)
tile_name, time, aws_index

返回：（'36STA'，'2017-9-6'，0）

最后一段代码告诉我们应该下载什么频段，应该下载哪些频段等等：

bands = ['B02','B03','B04']
metafiles = [ 'preview']

data_folder = './ChangeDetection'

request = AwsTileRequest(tile=tile_name, time=time, aws_index=aws_index,
                         bands=bands, metafiles=metafiles, data_folder=data_folder)
request.save_data()

因此，为了下载多个图像，我每次都要复制并粘贴Tile_id。我的问题是：我如何编写代码，以便它获取一个Tile_id下载，然后转到第二个Tile_id并下载它。并继续下载，直到列表完成。问候，本

Answer 1

要具体回答您的问题，您需要使用Sentinelhub Web功能服务获取符合您的参数的所有图块的列表。然后，您可以通过迭代器传递该列表，为图块/产品提取输入信息，要求他们实现。

这是我所拥有的代码，虽然不是很漂亮，但是可以解决问题。请注意，当前已将其设置为以.SAFE模式下载，并且，如果您不在AWS环境中工作，则需要传递AWS安全凭证。

from sentinelhub import WebFeatureService, BBox, CRS, AwsProductRequest, AwsTile, DataSource, AwsTileRequest

# config for sentinelhub WFS requests
INSTANCE_ID = 'YOUR INSTANCE HERE' 

#boundslist format eg = [101.429, 0.4629, 101.64, 0.6737]
#searchdates format eg =('2018-08-01T00:00:00', '2018-08-31T23:59:59')
#cloudmax format eg = 0.25

def batchdownloader(boundslist,searchdates,cloudmax,downloadfolder,):
    search_bbox = BBox(bbox = boundslist, crs=CRS.WGS84)
    search_time_interval = searchdates
    wfs_iterator = WebFeatureService(search_bbox, search_time_interval,
                                 data_source=DataSource.SENTINEL2_L1C,
                                 maxcc=cloudmax, instance_id=INSTANCE_ID)


    outinfo=wfs_iterator.get_tiles()
    print('The tool will download',len(outinfo), 'images.')
    for i in outinfo:
        tilename = i[0]
        tiledate = i[1]
        tileindex = i[2]
        productid=(AwsTile(tile_name=tilename, time=tiledate, aws_index=tileindex, data_source=DataSource.SENTINEL2_L1C).get_product_id())
        print (productid)

        #Uncomment the below code if you want to download the whole product
        #product_request = AwsProductRequest(product_id=productid, data_folder=downloadfolder, safe_format=True)
        #product_request.save_data()
        #print (productid, '.SAFE folder for this image has been downloaded to', downloadfolder, )

        #uncomment the below code if you want to download just the tiles
        #tile_request = AwsTileRequest(tile=tilename, time=tiledate, aws_index=tileindex, data_folder=downloadfolder, safe_format=True)
        #tile_request.save_data()
        #print (productid, 'Tiles for this image have been downloaded to', downloadfolder)
        i =+1
    print('Completed downloads.')


batchdownloader([110.3055, -1.0574, 110.4125, -0.87],('2018-06-15T00:00:00', '2018-06-30T23:59:59'), 0.4, r'C:\YOURFOLDER')

下载sentinelhub（python）提供的列表中的所有数据

1 个答案: