Fix a bug when setting pixel_coordinate_system in to_uvbeam

Author: bhazelton

CHANGELOG.md

@@ -13,6 +13,10 @@ use pooch to download and cache the test data in testing and in tutorials.
 - Added pooch as a testing dependency, added a new optional dependency option
 called `tutorial` which currently adds pooch and matplotlib.
 
+### Fixed
+- A bug that caused an error when setting the pixel_coordinate_system in
+`UVBeam.new` and `AnalyticBeam.to_uvbeam`.
+
 ## [3.2.3] - 2025-07-21
 
 ### Added

src/pyuvdata/uvbeam/initializers.py

@@ -246,7 +246,7 @@ def new_uvbeam(
 
         if pixel_coordinate_system is not None:
             allowed_pcs = list(uvb.coordinate_system_dict.keys())
-            if uvb.pixel_coordinate_system not in allowed_pcs:
+            if pixel_coordinate_system not in allowed_pcs:
                 raise ValueError(
                     f"pixel_coordinate_system must be one of {allowed_pcs}"
                 )

tests/test_beam_interface.py

@@ -125,6 +125,7 @@ def test_beam_interface(
         to_uvbeam_kwargs = {"axis1_array": az_array, "axis2_array": za_array}
 
     include_cross_pols = kwargs.get("include_cross_pols", True)
+    to_uvbeam_kwargs["pixel_coordinate_system"] = coord_sys
 
     uvb = analytic.to_uvbeam(
         beam_type=init_beam_type, freq_array=freq_array, **to_uvbeam_kwargs