discarding mu_map slices can now be used to discard same kind of slices from reconstructions

mu_map/data/review_mu_map.py

+from typing import Optional
+
 import numpy as np
 import pandas as pd
 
@@ -6,22 +8,30 @@ HEADER_DISC_FIRST = "discard_first"
 HEADER_DISC_LAST = "discard_last"
 
 
-def discard_slices(row: pd.Series, μ_map: np.ndarray) -> np.ndarray:
+def discard_slices(row: pd.Series, μ_map: np.ndarray, recon: Optional[np.ndarray] = None) -> np.ndarray:
     """
     Discard slices based on the flags in the row of th according table.
     The row is expected to contain the flags 'discard_first' and 'discard_last'.
 
     :param row: the row of meta configuration file of a dataset
     :param μ_map: the μ_map
+    :param recon: optional reconstruction of which the same slice is discarded so that the alignment stays the same
     :return: the μ_map with according slices removed
     """
     _res = μ_map
 
     if row[HEADER_DISC_FIRST]:
         _res = _res[1:]
+        if recon is not None:
+            recon = recon[1:]
 
     if row[HEADER_DISC_LAST]:
         _res = _res[:-1]
+        if recon is not None:
+            recon = recon[:-1]
+
+    if recon is not None:
+        return _res, recon
 
     return _res