Change xr_interpolate extent Error to Warning (#1210)

* Change `xr_interpolate` extent Error to Warning

* Update tests

* Update docstring

Tests/dea_tools/test_spatial.py

@@ -417,8 +417,8 @@ def test_xr_interpolate(dem_da, points_gdf, method):
             k=5,
         )
 
-    # Verify that error is raised if `gdf` doesn't overlap with `ds`
-    with pytest.raises(ValueError):
+    # Verify that warning is raised if `gdf` doesn't overlap with `ds`
+    with pytest.warns():
         xr_interpolate(
             dem_da,
             gdf=points_gdf.set_crs("EPSG:3577", allow_override=True),

Tools/dea_tools/spatial.py

@@ -601,7 +601,7 @@ def xr_interpolate(
         A dataset of spatial points including at least one numeric column.
         By default all numeric columns in this dataset will be spatially
         interpolated into the extent of `ds`; specific columns can be
-        selected using `columns`. An error will be raised if the points
+        selected using `columns`. An warning will be raised if the points
         in `gdf` do not overlap with the extent of `ds`.
     columns : list, optional
         An optional list of specific columns in gdf` to run the
@@ -646,10 +646,10 @@ def xr_interpolate(
     ds = add_geobox(ds, crs)
     y_dim, x_dim = ds.odc.spatial_dims
 
-    # Reproject to match input `ds`, and raise error if there are no overlaps
+    # Reproject to match input `ds`, and raise warning if there are no overlaps
     gdf = gdf.to_crs(ds.odc.crs)
     if not gdf.dissolve().intersects(ds.odc.geobox.extent.geom).item():
-        raise ValueError("The supplied `gdf` does not overlap spatially with `ds`.")
+        warnings.warn("The supplied `gdf` does not overlap spatially with `ds`.", stacklevel=2)
 
     # Select subset of numeric columns (non-numeric are not supported)
     numeric_gdf = gdf.select_dtypes("number")