Error when trying to retrieve S1 data- Dataset with id: 0 not found

Apps / Services Python SDK
1

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: ["VV","VH"],
    output: { bands: 2,sampleType:"FLOAT32"}
  };
}

function evaluatePixel(sample) {
  return [10 * 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=[]
    
    catalog = SentinelHubCatalog(config=config)
    
    tiles = list(catalog.search(
        collection=DataCollection.SENTINEL1_IW,
        time=time_interval,
        bbox=bbox
    ))    
    
    
    dates = [parse_time(t['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=response[0][:,:,0]
    vh=response[0][:,:,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 :slight_smile:

My end goal: retrieve sentinel 1 image using my functions

2

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 :smiley:

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. :slight_smile:

1 Like
3

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 :frowning:

This is the fixed eval

evalscript = """
//VERSION=3

function setup() {
  return {
    input: ["VV","VH"],
    output: { bands: 2,sampleType:"FLOAT32"}
  };
}

function evaluatePixel(sample) {
  return [10 * Math.log((sample.VV)+0.0001) / Math.LN10, 10 * Math.log((sample.VH)+0.0001) / Math.LN10];
}
"""

but still same problem :frowning:

4

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?

5

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.

1 Like
6

Thanks Max, that was the issue!