Use odc.geo code for geobox anchor

GeoBox.anchor is a thing since odc-geo>=0.4.4

odc/stac/_mdtools.py

@@ -255,21 +255,6 @@ def mk_1x1_geobox(g: Geometry) -> GeoBox:
     return GeoBox((1, 1), Affine((x2 - x1), 0, x1, 0, (y1 - y2), y2), g.crs)
 
 
-def _gbox_anchor(gbox: GeoBox, tol: float = 1e-3) -> GeoboxAnchor:
-    def _anchor(px: float, tol: float) -> float:
-        _, x = split_float(px)  # x in (-0.5, +0.5)
-        x = (1 + x) if x < 0 else x  # x in [0, 1)
-        x = snap_scale(maybe_zero(x, tol), tol)
-        return 0 if x >= 1 else x
-
-    anchor = tuple(_anchor(px, tol) for px in (~gbox.transform) * (0, 0))
-    if anchor == (0, 0):
-        return AnchorEnum.EDGE
-    if anchor == (0.5, 0.5):
-        return AnchorEnum.CENTER
-    return xy_(anchor)
-
-
 def asset_geobox(asset: pystac.asset.Asset) -> GeoBox:
     """
     Compute GeoBox from STAC Asset.
@@ -762,10 +747,10 @@ def _most_common_gbox(
     _gboxes = set(gboxes)
     if len(_gboxes) == 1:
         g = _gboxes.pop()
-        return (g.crs, g.resolution, _gbox_anchor(g), g)
+        return (g.crs, g.resolution, g.anchor, g)
 
     # Most common shared CRS, Resolution, Anchor
-    gg = [(g.crs, g.resolution, _gbox_anchor(g)) for g in gboxes]
+    gg = [(g.crs, g.resolution, g.anchor) for g in gboxes]
     hist = Counter(gg)
     (best, n), *_ = hist.most_common(1)
     if n / len(gg) > thresh:

setup.cfg

@@ -37,7 +37,7 @@ tests_require =
 
 install_requires =
     affine
-    odc-geo>=0.3.0
+    odc-geo>=0.4.4
     rasterio>=1.0.0,!=1.3.0,!=1.3.1
     dask[array]
     numpy>=1.20.0

tests/test_mdtools.py

@@ -19,7 +19,6 @@
 from odc.loader.types import FixedCoord, RasterBandMetadata, RasterGroupMetadata
 from odc.stac._mdtools import (
     _auto_load_params,
-    _gbox_anchor,
     _most_common_gbox,
     _normalize_geometry,
     asset_geobox,
@@ -635,20 +634,6 @@ def test_usgs_v1_1_1_aliases(usgs_landsat_stac_v1_1_1: pystac.Item) -> None:
     }
 
 
-@pytest.mark.parametrize(
-    "gbox",
-    [
-        GeoBox.from_bbox((0, 0, 100, 200), resolution=10, crs=3857),
-        GeoBox.from_bbox((-10, 0, 100, 200), resolution=10, crs=3857),
-    ],
-)
-def test_gbox_anchor(gbox: GeoBox):
-    assert _gbox_anchor(gbox) == AnchorEnum.EDGE
-    assert _gbox_anchor(gbox.translate_pix(-1e-5, 1e-5)) == AnchorEnum.EDGE
-    assert _gbox_anchor(gbox.translate_pix(0.5, 0.5)) == AnchorEnum.CENTER
-    assert _gbox_anchor(gbox.translate_pix(-1 / 4, -1 / 8)) == xy_(1 / 4, 1 / 8)
-
-
 def test_most_common_gbox():
     gbox = GeoBox.from_bbox((0, 0, 100, 200), resolution=10, crs=3857)
     assert _most_common_gbox(