Allow tiny round-off exceedence of max_resolution in spatial check (#30)

Author: ladc

CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- Make checks on max spatial resolution (1km) more lenient using math.isclose [\#30](https://github.com/mlcast-community/mlcast-dataset-validator/pull/30), @ladc
 - Detect Zarr v3 format from store files (`zarr.json`) instead of relying on `getattr(ds, "zarr_format", 2)` which always defaulted to v2, causing v3 stores to incorrectly fail the consolidated metadata check [\#27](https://github.com/mlcast-community/mlcast-dataset-validator/pull/27), @franchg
 - Fix for package version in ci build of html render of specs [\#25](https://github.com/mlcast-community/mlcast-dataset-validator/pull/25), @leifdenby
 

mlcast_dataset_validator/checks/coords/spatial.py

@@ -1,3 +1,5 @@
+import math
+
 import xarray as xr
 
 from ...specs.reporting import ValidationReport, log_function_call
@@ -35,9 +37,13 @@ def check_spatial_requirements(
             if len(x_vals) > 1 and len(y_vals) > 1:
                 x_res = abs(float(x_vals[1] - x_vals[0]))
                 y_res = abs(float(y_vals[1] - y_vals[0]))
+                max_resolution_m = max_resolution_km * 1000
                 if (
-                    x_res <= max_resolution_km * 1000
-                    and y_res <= max_resolution_km * 1000
+                    x_res <= max_resolution_m
+                    or math.isclose(x_res, max_resolution_m, rel_tol=1e-6)
+                ) and (
+                    y_res <= max_resolution_m
+                    or math.isclose(y_res, max_resolution_m, rel_tol=1e-6)
                 ):
                     report.add(
                         SECTION_ID,