-
Notifications
You must be signed in to change notification settings - Fork 5
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Item thumbnails are not correctly anchored on STAC Explorer preview maps #420
Comments
I wonder if setting |
Nice, yes, the preview does get reprojected with This one in particular gets weirdly expanded towards the north. |
4326 is where we are coming from (native projection). We do need 3857 for the Web Mercator map in STAC Browser, I guess... |
Yes, all the Leaflet map does is take the PNG and place it within the given bbox (from STAC). So the long PNG gets used as-is. |
👀 I'm pretty sure the preview should be in EPSG:4326, the issue then is to know which bbox (in epsg4326) correspond to image returned by the service |
Which bbox does STAC Browser use to mount the image on the map?Looks like And why do image and that bbox not match?? |
The new item thumbnails are amazing for getting a visual impression of the data in a client application like STAC Explorer!
Unfortunately, for many collections in our VEDA Earthdata catalog which are on global lat/lon grids (e.g.
fldas-soil-moisture-anomalies
), they do not mount well on the preview map in STAC Browser:https://staging.openveda.cloud/stac/collections/fldas-soil-moisture-anomalies/items/FLDAS_NOAH01_SoilMoi00_10cm_tavg_C_GL_MA_ANOM202307_20230701?.language=en&.asset=asset-rendered_preview
I guess the thumbnail is not reprojected and just a dump of the native grid (equirectangular, i.e. regular lat/lon), while the little preview map is using Web Mercator. Preview thumbnails in native map projection are more informative than reprojected ones, I'd say, but it just does not look good...
Btw, Planetary Computer STAC / STAC Browser has the same issue with preview thumbnails for global gridded datasets, e.g. https://radiantearth.github.io/stac-browser/#/external/planetarycomputer.microsoft.com/api/stac/v1/collections/noaa-cdr-ocean-heat-content/items/ocean-heat-content-2020-Q2-2000m?.asset=asset-rendered_preview
Can we fix this somehow, so the preview images show nicely on the STAC Browser map - or we disable this map, because it will be wrong for most datasets? (btw, no is also an acceptable answer...)
Acceptance criteria
The text was updated successfully, but these errors were encountered: