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Dimensions

Dimensions[expr]
gives a list of the dimensions of expr.
Dimensions
gives a list of the dimensions of expr down to level n.
  • expr must be a full array, with all the pieces of expr at a particular level having the same length. (The elements of expr can then be thought of as filling up a hyper-rectangular region.)
  • Each successive level in expr sampled by Dimensions must have the same head.
Dimensions of a matrix:
Dimensions of a matrix:
In[1]:=
Click for copyable input
Out[1]=
Dimensions counts only dimensions at which an expression is not "ragged":
Dimensions works with arrays of any depth:
Give dimensions only down to level 2:
Dimensions works with any head, not just List:
The "array" is considered full only when it has the same head as at the top:
Dimensions works with SparseArray objects:
Find dimensions of regions filled by 10 steps of cellular automaton evolution:
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