Merge pull request #204 from aspitarl/dt-ns-fix

change _diff_coord to use nanosecond precision
xgcm · Jul 1, 2024 · 83b0a75 · 83b0a75
2 parents 1a9b8af + b23caad
commit 83b0a75
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/xrft/xrft.py b/xrft/xrft.py
@@ -208,7 +208,9 @@ def _diff_coord(coord):
         coord = xr.DataArray(decoded_time, dims=coord.dims, coords=coord.coords)
         return np.diff(coord)
     elif pd.api.types.is_datetime64_dtype(v0):
-        return np.diff(coord).astype("timedelta64[s]").astype("f8")
+        diff = np.diff(coord).astype("timedelta64[ns]").astype("f8")
+        diff = (diff/1e9) #convert back to seconds
+        return diff
     else:
         return np.diff(coord)