Merge pull request #1217 from nschloe/flac-fix

fix flac reader
nschloe · Nov 16, 2021 · ecda7cc · ecda7cc
2 parents 2c38e0a + d25d24c
commit ecda7cc
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diff --git a/src/meshio/ansys/_ansys.py b/src/meshio/ansys/_ansys.py
@@ -1,6 +1,7 @@
 """
-I/O for Ansys's msh format, cf.
-<https://www.afs.enea.it/fluent/Public/Fluent-Doc/PDF/chp03.pdf>.
+I/O for Ansys's msh format.
+
+<https://romeo.univ-reims.fr/documents/fluent/tgrid/ug/appb.pdf>
 """
 import logging
 import re

diff --git a/src/meshio/flac3d/_flac3d.py b/src/meshio/flac3d/_flac3d.py
@@ -154,7 +154,8 @@ def read_buffer(f, binary):
             elif line[0] in {"ZGROUP", "FGROUP"}:
                 flag = zone_or_face[line[0][0]]
                 name, slot, data = _read_cell_group_ascii(f, line)
-                cell_sets[f"{flag}:{name}:{slot}"] = np.array(data)
+                # flac data is 1-based
+                cell_sets[f"{flag}:{name}:{slot}"] = np.array(data) - 1
 
             line = f.readline().rstrip().split()