Spatial shift when loading data from the STAC catalogue

1

Dear all,

we have recently created a new dataset in the Eurac STAC catalogue.

For example, see https://stac.eurac.edu/collections/MOD10A1v61/items/20230120000000 for a specific image.

When trying to access it though a very basic script and download it:

import openeo

conn = openeo.connect("https://openeo.dataspace.copernicus.eu/").authenticate_oidc()

modis = conn.load_stac("https://stac.eurac.edu/collections/MOD10A1v61",
                      temporal_extent = ["2023-01-20","2023-01-21"])

modis.download("sample_modis.tiff")

the tif file presents a wrong spatial extent w.r.t. the original data loaded in the STAC catalogue as well as the bbox that is specified in the STAC, i.e.,
631800,5167700, 655800,5184200

while the downloaded output presents this extent 631000,5167000,656500,5185000.

Thanks in advance for your help,
Valentina

2

Hi Valentina,

This is a known issue: load_stac: pixel shift · Issue #648 · Open-EO/openeo-geopyspark-driver · GitHub

It is only planned to be fixed mid May tough. Would that work out for you?

When overlaying sample_modis.tiff with
https://eurac-eo.s3-eu-west-1.amazonaws.com/MOD10A1v61/SENALES/SCF_20230120000000.tif
the difference is clearly visible
image

1 Like
3

Thank you Emile!