Unable to get the raw images

1

Hello Good afternoon

I am trying to get the raw images for coordinates

[[[73.07856056839228,30.28329911154398],[73.07787459343672,30.283310982076873],[73.07785883545876,30.28380925363847],[73.07723723351955,30.28379738316585],[73.07718861848116,30.283297374392692],[73.07683825492859,30.283202989127027],[73.07682450860739,30.282224677605384],[73.07782463729382,30.282199778161473],[73.07790275663137,30.281683547569447],[73.07856727391481,30.28168181038956],[73.07856056839228,30.28329911154398],[73.07787459343672,30.283310982076873],[73.07785883545876,30.28380925363847],[73.07723723351955,30.28379738316585],[73.07718861848116,30.283297374392692],[73.07683825492859,30.283202989127027],[73.07682450860739,30.282224677605384],[73.07782463729382,30.282199778161473],[73.07790275663137,30.281683547569447],[73.07856727391481,30.28168181038956],[73.07856056839228,30.28329911154398]]]

tried to download the raw image from sentinel eo browser, the output image is giving nan as the image pixel value

Could you help me to fix this issue?

Thanks in advance,

Regards,
Swathi ks

2

Hey @swathi.kanle1

could you maybe share the EO Browser link with us. This would help us to check for which date and which collection you are getting problems.

Best,
Daniel

3

Hello Daniel,

here is the link I used to download the data

https://apps.sentinel-hub.com/eo-browser/?zoom=8&lat=30.52678&lng=72.90253&themeId=DEFAULT-THEME

I have requested for sentinel-s2-l1c, date 2021-06-19 (actually i tried downloading other dates aswell, for all the dates the value in nan)

4

Hi @swathi.kanle1,

It is not quite clear to me where you might be going wrong when downloading the imagery through EO Browser. When I search for Sentinel-2 L1C data from 19.06.2021 in the provided area of interest, the data is visualised correctly. Please follow this link to check for yourself.

In the download options you then choose the Analytical tab, probably change the image format to TIFF and tick all boxes for the raw bands as shown below.

2021-06-24 13_58_39-Sentinel Hub EO Browser
2021-06-24 13_58_39-Sentinel Hub EO Browser826×631 19.6 KB

I have no problems to display the downloaded data in e.g QGIS and you can see the values displayed for the cursor position in the lower left corner of the screenshot below.

2021-06-24 13_59_28-Outline.pptx - PowerPoint
2021-06-24 13_59_28-Outline.pptx - PowerPoint1917×885 212 KB

What are the actual download options you used in the download interface? Do you have any more details for us so we can try and replicate the error you are experiencing?

I hope that helps,
Max

5

Hi Max,

Thank you for the response

Followed the same procedure as per your suggestions

image
image859×667 62.8 KB

But still we are getting zero values (we checked with QGIS )

image (2)
image (2)1767×866 347 KB

We tried with EPSG:4326 as EPSG 3857 was not available in the coordinate system option

Here is the geojson i used with EO browser

{“type”:“FeatureCollection”,“features”:[{“type”:“Feature”,“properties”:{},“geometry”:{“type”:“Polygon”,“coordinates”:[[[73.07856056839228,30.28329911154398],[73.07787459343672,30.283310982076873],[73.07785883545876,30.28380925363847],[73.07723723351955,30.28379738316585],[73.07718861848116,30.283297374392692],[73.07683825492859,30.283202989127027],[73.07682450860739,30.282224677605384],[73.07782463729382,30.282199778161473],[73.07790275663137,30.281683547569447],[73.07856727391481,30.28168181038956],[73.07856056839228,30.28329911154398],[73.07787459343672,30.283310982076873],[73.07785883545876,30.28380925363847],[73.07723723351955,30.28379738316585],[73.07718861848116,30.283297374392692],[73.07683825492859,30.283202989127027],[73.07682450860739,30.282224677605384],[73.07782463729382,30.282199778161473],[73.07790275663137,30.281683547569447],[73.07856727391481,30.28168181038956],[73.07856056839228,30.28329911154398]]]}}]}

Could you please help us to get the correct image pixel values?

Regards
Swathi ks

6

Hi again @swathi.kanle1,

We figured out that you were using a faulty polygon that caused the error. It traces its own outline back and thus does not contain any area to request data with.

The following geojson works perfectly:

{
        "type": "Polygon",
        "coordinates": [
                [
                [73.07856056839228,30.28329911154398],
                [73.07787459343672,30.283310982076873],
                [73.07785883545876,30.28380925363847],
                [73.07723723351955,30.28379738316585],
                [73.07718861848116,30.283297374392692],
                [73.07683825492859,30.283202989127027],
                [73.07682450860739,30.282224677605384],
                [73.07782463729382,30.282199778161473],
                [73.07790275663137,30.281683547569447],
                [73.07856727391481,30.28168181038956],
                [73.07856056839228,30.28329911154398]]]
}

Cheers,
Max

7

Thank you so much for the help

Regards,
Swathi ks