This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)
BUILT-IN MATHEMATICA SYMBOL|See Also »

Missing

Missing
represents data that is missing.
Missing
specifies a reason for the data being missing.
Missing
associates the expression expr with the missing data.
  • Missing[...] is a symbolic object, with no default evaluation rules defined.
  • Typical examples of include , , , , , , , or .
  • Plotting functions automatically omit Missing objects when plotting data.
When properties are missing, a Missing object is returned:
Missing elements can be filtered out using DeleteCases:
Visualization typically automatically filters out Missing elements:
When properties are missing, a Missing object is returned:
In[1]:=
Click for copyable input
Out[1]=
In[2]:=
Click for copyable input
Out[2]=
 
Missing elements can be filtered out using DeleteCases:
In[1]:=
Click for copyable input
Out[1]=
 
Visualization typically automatically filters out Missing elements:
In[1]:=
Click for copyable input
Out[1]=
New in 6