Merge pull request #329 from punch-mission/ignore-errors

Ignore warnings in unpacking uncertainty

punchbowl/data/io.py

@@ -115,8 +115,9 @@ def _pack_uncertainty(cube: NDCube) -> np.ndarray:
 def _unpack_uncertainty(uncertainty_array: np.ndarray, data_array: np.ndarray) -> np.ndarray:
     """Uncompress the uncertainty when reading from a file."""
     # This is (1/uncertainty_array) * data_array, but this way we save time on memory allocation
-    np.divide(1, uncertainty_array, out=uncertainty_array)
-    np.multiply(data_array, uncertainty_array, out=uncertainty_array)
+    with np.errstate(divide="ignore", invalid="ignore"):
+        np.divide(1, uncertainty_array, out=uncertainty_array)
+        np.multiply(data_array, uncertainty_array, out=uncertainty_array)
     return uncertainty_array