MATLAB Function Reference

prod

Product of array elements

Syntax

• B = prod(A)
  B = prod(A,dim)
  

Description

B = prod(A) returns the products along different dimensions of an array.

If A is a vector, prod(A) returns the product of the elements.

If A is a matrix, prod(A) treats the columns of A as vectors, returning a row vector of the products of each column.

If A is a multidimensional array, prod(A) treats the values along the first non-singleton dimension as vectors, returning an array of row vectors.

B = prod(A,dim) takes the products along the dimension of A specified by scalar dim.

Examples

The magic square of order 3 is

• M = magic(3)
  
  M = 
      8    1    6
      3    5    7
      4    9    2 
  

The product of the elements in each column is

• prod(M) =
   
      96    45    84 
  

The product of the elements in each row can be obtained by:

• prod(M,2) = 
  
       48
      105
       72
  

See Also

cumprod, diff, sum

printpreview

profile