Enable BMS transformations to be written to the same .h5 file (#90)

Co-authored-by: github-actions <github-actions@github.com>
Co-authored-by: Mike Boyle <michael.oliver.boyle@gmail.com>

.github/workflows/build.yml

@@ -35,7 +35,7 @@ jobs:
     steps:
       - name: Skip replicates on main branch
         env:
-          skip_replicates: ${{ github.ref == 'refs/heads/main' && (matrix.os != 'ubuntu-latest' || matrix.python-version != '3.11') }}
+          skip_replicates: ${{ github.ref == 'refs/heads/main' && github.repository_owner == 'moble' && (matrix.os != 'ubuntu-latest' || matrix.python-version != '3.11') }}
         shell: bash
         run: |
           echo "skipping_build_and_test_replicate=${skip_replicates}" >> $GITHUB_ENV
@@ -69,6 +69,7 @@ jobs:
     runs-on: ubuntu-latest
     if: >-
         github.ref == 'refs/heads/main'
+        && github.repository_owner == 'moble'
         && !contains(github.event.head_commit.message, '[no release]')
         && (success() || contains(github.event.head_commit.message, '[skip tests]'))
 

scri/bms_transformations.py

@@ -591,24 +591,32 @@ def __mul__(self, other):
 
         return bms_composed
 
-    def to_file(self, filename):
+    def to_file(self, filename, file_write_mode="w", group=None):
         dt = h5py.special_dtype(vlen=str)
-        with h5py.File(filename, "w") as hf:
-            hf.create_dataset("supertranslation", data=self.supertranslation)
-            hf.create_dataset("frame_rotation", data=self.frame_rotation.components)
-            hf.create_dataset("boost_velocity", data=self.boost_velocity)
-            hf.create_dataset("order", data=self.order)
-            hf.create_dataset("ell_max", data=self.ell_max)
+        with h5py.File(filename, file_write_mode) as hf:
+            if group is not None:
+                g = hf.create_group(group)
+            else:
+                g = hf
+            g.create_dataset("supertranslation", data=self.supertranslation)
+            g.create_dataset("frame_rotation", data=self.frame_rotation.components)
+            g.create_dataset("boost_velocity", data=self.boost_velocity)
+            g.create_dataset("order", data=self.order)
+            g.create_dataset("ell_max", data=self.ell_max)
 
         return
 
-    def from_file(self, filename):
+    def from_file(self, filename, group=None):
         with h5py.File(filename, "r") as hf:
-            supertranslation = np.array(hf.get("supertranslation"))
-            frame_rotation = np.array(hf.get("frame_rotation"))
-            boost_velocity = np.array(hf.get("boost_velocity"))
-            order = [x.decode("utf-8") for x in np.array(hf.get("order"))]
-            ell_max = int(np.array(hf.get("ell_max")))
+            if group is not None:
+                g = hf[group]
+            else:
+                g = hf
+            supertranslation = np.array(g.get("supertranslation"))
+            frame_rotation = np.array(g.get("frame_rotation"))
+            boost_velocity = np.array(g.get("boost_velocity"))
+            order = [x.decode("utf-8") for x in np.array(g.get("order"))]
+            ell_max = int(np.array(g.get("ell_max")))
 
         BMS = BMSTransformation(
             frame_rotation=frame_rotation,