Basic Examples 
(3)
 

Give the antidiagonal elements of a matrix:
In[4]:=
[◼]
Antidiagonal
[{{a,b,c},{d,e,f},{g,h,i}}]
Out[4]=
{c,e,g}
———
Give antidiagonals one element above and below the leading diagonal:
In[5]:=
[◼]
Antidiagonal
[{{a,b,c},{d,e,f},{g,h,i}},1]
Out[5]=
{b,d}
In[6]:=
[◼]
Antidiagonal
[{{a,b,c},{d,e,f},{g,h,i}},-1]
Out[6]=
{f,h}
———
Give an antidiagonal of a nonsquare matrix:
In[7]:=
[◼]
Antidiagonal
[{{1,2,3,4},{5,6,7,8},{9,10,11,12}}]
Out[7]=
{4,7,10}

Properties and Relations 
(1)
 
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Possible Issues 
(1)
 


Neat Examples 
(1)
 
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