Merge pull request #6376 from ayshih/matrix_product

Removes lingering use of Astropy's `matrix_product()`
sunpy · Aug 23, 2022 · 47224c1 · 47224c1
2 parents 17d3bda + bb971e3
commit 47224c1
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diff --git a/changelog/6376.trivial.rst b/changelog/6376.trivial.rst
@@ -0,0 +1 @@
+Switched to using the standard matrix-multiplication operator (available in Python 3.5+) instead of a custom function.
diff --git a/sunpy/coordinates/transformations.py b/sunpy/coordinates/transformations.py
@@ -32,7 +32,7 @@
 from astropy.coordinates.baseframe import frame_transform_graph
 from astropy.coordinates.builtin_frames import make_transform_graph_docs
 from astropy.coordinates.builtin_frames.utils import get_jd12
-from astropy.coordinates.matrix_utilities import matrix_product, matrix_transpose, rotation_matrix
+from astropy.coordinates.matrix_utilities import matrix_transpose, rotation_matrix
 from astropy.coordinates.representation import (
     CartesianRepresentation,
     SphericalRepresentation,
@@ -806,7 +806,7 @@ def _rotation_matrix_hme_to_hee(hmeframe):
     tilt_matrix = _rotation_matrix_reprs_to_reprs(sun_earth_hme.transform(rot_matrix),
                                                   CartesianRepresentation(1, 0, 0))
 
-    return matrix_product(tilt_matrix, rot_matrix)
+    return tilt_matrix @ rot_matrix
 
 
 @frame_transform_graph.transform(FunctionTransformWithFiniteDifference,