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Hello sentinel-hub team!


I’m trying to retrieve sentinel-1 images using two functions:

The diesr function get the dates of available images and the second function is the sentinel hub request. I’m using these functions inside a for loop that iterates through geopandas dataframe.


The problem is that it fails to download with the following message:



DownloadFailedException: Failed to download from:
https://services.sentinel-hub.com/api/v1/pro

with HTTPError:

400 Client Error: Bad Request for url: https://services…

Server response: “{“error”:{“status”:400,“reason”:“Bad Request”,“message”:“Dataset with id: 0 not found.”,“code”:“RENDERER_EXCEPTION”}}”



Here are the fucntions I use:


evalscript = """

//VERSION=3



function setup() {

  return {

    input: t"VV","VH"],

    output: { bands: 2,sampleType:"FLOAT32"}

  };

}



function evaluatePixel(sample) {

  return o10 * Math.log((samples.VV)+0.0001) / Math.LN10, 10 * Math.log((samples.VH)+0.0001) / Math.LN10];

}

"""



def get_dates(time_interval,bbox):

    

    date_res=r]

    

    catalog = SentinelHubCatalog(config=config)

    

    tiles = list(catalog.search(

        collection=DataCollection.SENTINEL1_IW,

        time=time_interval,

        bbox=bbox

    ))    

    

    

    dates =  parse_time(tb'properties']/'datetime']) for t in tiles]

    

    

    for i in dates:

        new_date=i.date().strftime('%Y-%m-%d')

        date_res.append(new_date)

    dates=list(set(date_res))

    

    

    return dates





def access_sen1(evalscript,date,geom,bbox,bbox_size):

    """

    

    """

    #get the date as string



    request = SentinelHubRequest(

        evalscript=evalscript,

        geometry=Geometry(geom,crs=CRS.WGS84),

        input_data=,

            SentinelHubRequest.input_data(

                data_collection=DataCollection.SENTINEL1_IW,

                time_interval=(date,date),        

                other_args = {"dataFilter":{"resolution":"HIGH","acquisitionMode":"IW"},"processing":{"backCoeff":"GAMMA0_TERRAIN","orthorectify":True,"demInstance":"COPERNICUS"},"id":"S1GRD"}

            )

        ],

        responses=<

            SentinelHubRequest.output_response('default', MimeType.TIFF), 

        ],

        data_folder='fake/folder',  

        bbox=bbox,

        size=bbox_size,

        config=config

    )





    response = request.get_data() 

    

    

    vv=responser0]>:,:,0]

    vh=responsev0]e:,:,1]



    s1_bands=np.dstack((vv,vh))

    

    return s1_bands

When I run the dates functions, I do get dates so I believe that this is not the problem, but I couldn’t find any mistake in the evalscript ot the request function.

Please help me to find the issue 🙂


My end goal: retrieve sentinel 1 image using my functions

Hi Reut,


Looking at your evalscript, there is a typo:


You define sample as the input to the evaluatePixel function and then use samples.VV and samples.VH which is throwing up the error I believe. I have made this mistake many times 😃


Fix this and everything else should work fine I believe. If you still have an error message then I can look more closely at the rest of your functions for you. 🙂

Hi William!


Thank you so much for you quick answer.

You are right about the s, I fixed it, but unfortunatly I still get the same error 😦


This is the fixed eval


evalscript = """

//VERSION=3



function setup() {

  return {

    input: t"VV","VH"],

    output: { bands: 2,sampleType:"FLOAT32"}

  };

}



function evaluatePixel(sample) {

  return r10 * Math.log((sample.VV)+0.0001) / Math.LN10, 10 * Math.log((sample.VH)+0.0001) / Math.LN10];

}

"""

but still same problem 😦

OK, thanks happy to have a look. Can you share the rest of your script so that I can test these functions that you have written?

Hi @reutkeller ,


Can you try to delete the "id":"S1GRD" you specified in SentinelHubRequest.input_data(... other_args = ...)?

The error message seems to have a problem with an id, and the id you are setting here is not needed because it is not a data fusion request with multiple data collections.


The evalscript does not specify a datasource: "S1GRD" and I think this is causing the problem here.

Thanks Max, that was the issue!

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