fix: convert numpy.float64 to Python float in xarray interpolation

flexcompute · Jan 8, 2025 · 1a2e77d · 1a2e77d
1 parent e3212ef
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+[Unreleased]
+
+### Fixed
+
+- NumPy 2.1 compatibility issue where `numpy.float64` values passed to xarray interpolation would raise TypeError.
+
 ## [2.8.0rc1] - 2024-12-17
 
 ### Added

diff --git a/tidy3d/components/geometry/base.py b/tidy3d/components/geometry/base.py
@@ -2536,7 +2536,7 @@ def derivative_face(
         def integrate_face(arr: xr.DataArray) -> complex:
             """Interpolate and integrate a scalar field data over the face using bounds."""
 
-            arr_at_face = arr.interp(**{dim_normal: coord_normal_face}, assume_sorted=True)
+            arr_at_face = arr.interp(**{dim_normal: float(coord_normal_face)}, assume_sorted=True)
 
             integral_result = integrate_within_bounds(
                 arr=arr_at_face,