Is there a mosaic endpoint that you can use to extract values at a point?

[hrodmn]

I would like to add the ability to query values at a point in a web map. Is there an existing endpoint for querying values at point location from a mosaic? I did a quick scan of the docs today and don't see an obvious candidate. The /statistics endpoint might be able to do it but I think this is a simpler operation than what happens in /statstics!

[vincentsarago]

There is not! but it should be fairly easy to add

There is already the code in the backend:

titiler-pgstac/titiler/pgstac/mosaic.py

Lines 328 to 367 in e06ec42

	def point(
	self,
	lon: float,
	lat: float,
	coord_crs: CRS = WGS84_CRS,
	scan_limit: Optional[int] = None,
	items_limit: Optional[int] = None,
	time_limit: Optional[int] = None,
	exitwhenfull: Optional[bool] = None,
	skipcovered: Optional[bool] = None,
	**kwargs: Any,
	) -> List:
	"""Get Point value from multiple observation."""
	mosaic_assets = self.assets_for_point(
	lon,
	lat,
	coord_crs=coord_crs,
	scan_limit=scan_limit,
	items_limit=items_limit,
	time_limit=time_limit,
	exitwhenfull=exitwhenfull,
	skipcovered=skipcovered,
	)
	if not mosaic_assets:
	raise NoAssetFoundError(f"No assets found for point ({lon},{lat})")
	def _reader(
	item: Dict[str, Any],
	lon: float,
	lat: float,
	coord_crs=coord_crs,
	**kwargs: Any,
	) -> Dict:
	with self.reader(item, **self.reader_options) as src_dst:
	return src_dst.point(lon, lat, coord_crs=coord_crs, **kwargs)
	if "allowed_exceptions" not in kwargs:
	kwargs.update({"allowed_exceptions": (PointOutsideBounds,)})
	return list(multi_values(mosaic_assets, _reader, lon, lat, **kwargs).items())

we can follow https://github.com/developmentseed/titiler/blob/main/src/titiler/mosaic/titiler/mosaic/factory.py#L631-L678 for the endpoint