From b1b845cb5cb5a63fbc1b55bc4e4a2bf667ef1a05 Mon Sep 17 00:00:00 2001
From: Philip Eisenlohr <eisenlohr@egr.msu.edu>
Date: Wed, 18 May 2022 18:30:18 -0400
Subject: [PATCH 1/4] allow init of empty table

---
 python/damask/_table.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/python/damask/_table.py b/python/damask/_table.py
index 2d2c30c00..9ce0ce811 100644
--- a/python/damask/_table.py
+++ b/python/damask/_table.py
@@ -12,8 +12,8 @@ class Table:
     """Manipulate multi-dimensional spreadsheet-like data."""
 
     def __init__(self,
-                 shapes: dict,
-                 data: np.ndarray,
+                 shapes: dict = {},
+                 data: np.ndarray = None,
                  comments: Union[str, list] = None):
         """
         New spreadsheet.
@@ -405,7 +405,7 @@ class Table:
             new = pd.DataFrame(data=data.reshape(-1,size),
                                columns=[label]*size,
                               )
-            new.index = dup.data.index
+            new.index = new.index if dup.data.index.empty else dup.data.index
             dup.data = pd.concat([dup.data,new],axis=1)
 
         return dup

From b7d807db01f2a80ce23f3f5a9dbcd089edfb0bd5 Mon Sep 17 00:00:00 2001
From: Philip Eisenlohr <eisenlohr@egr.msu.edu>
Date: Wed, 25 May 2022 09:45:37 -0400
Subject: [PATCH 2/4] re-added default arguments that got lost in last commit

---
 python/damask/_table.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/python/damask/_table.py b/python/damask/_table.py
index dc2c6f961..78d7ddcb9 100644
--- a/python/damask/_table.py
+++ b/python/damask/_table.py
@@ -12,8 +12,8 @@ class Table:
     """Manipulate multi-dimensional spreadsheet-like data."""
 
     def __init__(self,
-                 shapes: dict,
-                 data: np.ndarray,
+                 shapes: dict = {},
+                 data: np.ndarray = None,
                  comments: Union[str, Iterable[str]] = None):
         """
         New spreadsheet.

From 7082eab366038fba6e5958871afb962782f32dcf Mon Sep 17 00:00:00 2001
From: Philip Eisenlohr <eisenlohr@egr.msu.edu>
Date: Fri, 8 Jul 2022 18:01:36 +0200
Subject: [PATCH 3/4] small test to demonstrate alternative Table init

---
 python/tests/test_Table.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/python/tests/test_Table.py b/python/tests/test_Table.py
index e530abe58..5eb950817 100644
--- a/python/tests/test_Table.py
+++ b/python/tests/test_Table.py
@@ -38,6 +38,17 @@ class TestTable:
         d = default.get('F')
         assert np.allclose(d,1.0) and d.shape[1:] == (3,3)
 
+    def test_empty_init(self):
+        N = 3
+        D = dict(
+                 scal=np.arange(10),
+                 vctr=np.arange(10*N).reshape((10,N)),
+                )
+        t = Table()
+        for label,data in D.items():
+            t = t.set(label,data)
+        assert np.allclose(t.get('scal').flatten()*3,t.get('vctr')[:,0])
+
     def test_set(self,default):
         d = default.set('F',np.zeros((5,3,3)),'set to zero').get('F')
         assert np.allclose(d,0.0) and d.shape[1:] == (3,3)

From 7530d457a277cf55776389c88b7d6c1b8f95c932 Mon Sep 17 00:00:00 2001
From: Martin Diehl <mail@martin-diehl.net>
Date: Mon, 15 Aug 2022 08:04:02 +0200
Subject: [PATCH 4/4] documenting new behavior

---
 PRIVATE                 | 2 +-
 python/damask/_table.py | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/PRIVATE b/PRIVATE
index cdca8ab0c..a8bd47ad5 160000
--- a/PRIVATE
+++ b/PRIVATE
@@ -1 +1 @@
-Subproject commit cdca8ab0c14b637c18279e0ea236caa148d15e5e
+Subproject commit a8bd47ad55125b477e6c03277ee38ce3998a66ca
diff --git a/python/damask/_table.py b/python/damask/_table.py
index 6e7dcf146..356e73730 100644
--- a/python/damask/_table.py
+++ b/python/damask/_table.py
@@ -20,10 +20,10 @@ class Table:
 
         Parameters
         ----------
-        shapes : dict with str:tuple pairs
-            Shapes of the data columns.
+        shapes : dict with str:tuple pairs, optional
+            Shapes of the data columns. Mandatory if 'data' is given.
             For instance, 'F':(3,3) for a deformation gradient, or 'r':(1,) for a scalar.
-        data : numpy.ndarray or pandas.DataFrame
+        data : numpy.ndarray or pandas.DataFrame, optional
             Data. Existing column labels of a pandas.DataFrame will be replaced.
         comments : str or iterable of str, optional
             Additional, human-readable information.