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size

  

size of an array in each dimension

 

Calling Sequence

Parameters

Description

Examples

Calling Sequence

size(M)

size(M, n)

Parameters

M

-

array

n

-

positive integer dimension

Description

• 

The size(M) function returns an array with the number of rows as the first entry, and the number of columns as the second entry.

• 

When M is a row-vector, the result of size(M) will have a 1 in the entry specifying the number of rows.  Similarly when M is a column-vector, there will be a 1 in the second entry of the result.

• 

When M has more than 2 dimensions, the number of entries in M will correspond to the number of dimensions of M.

• 

When n is given, size(M,n) will return only the number corresponding to that dimension.  size(M,1) will give the number of rows and size(M,2) will give the number of columns.

• 

When n is larger than the number of dimensions of M, 1 will be returned.

Examples

withMTM:

sizeMatrix2,3

23

(1)

sizeMatrix2,3,2

3

(2)

See Also

ArrayTools[Size]

MTM