Add classes for coordinate spaces and transforms (#218)

New classes: * Axis: simple data class storing a name, optional units, and optional scale * CoordinateSpace: used to define coordinate spaces for spatial data * CoordinateTransform: abstract base class for coordinate transforms * AffineTransform: implementation for a generic affine coordinate transform * ScaleTransform: implementation for a coordinate transform that scales axes (may be isotropic/uniform) * IdentityTransform: implementation for an identity transform that only applies a name change to axes --------- Co-authored-by: paul fisher <[email protected]>
single-cell-data · Sep 18, 2024 · 9cb6f80 · 9cb6f80
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diff --git a/python-spec/src/somacore/__init__.py b/python-spec/src/somacore/__init__.py
@@ -16,6 +16,13 @@
 
 from .base import SOMAObject
 from .collection import Collection
+from .coordinates import AffineTransform
+from .coordinates import Axis
+from .coordinates import CoordinateSpace
+from .coordinates import CoordinateTransform
+from .coordinates import IdentityTransform
+from .coordinates import ScaleTransform
+from .coordinates import UniformScaleTransform
 from .data import DataFrame
 from .data import DenseNDArray
 from .data import NDArray
@@ -61,4 +68,11 @@
     "AxisQuery",
     "ExperimentAxisQuery",
     "ContextBase",
+    "Axis",
+    "CoordinateSpace",
+    "CoordinateTransform",
+    "AffineTransform",
+    "ScaleTransform",
+    "UniformScaleTransform",
+    "IdentityTransform",
 )