cumprod (MATLAB Functions)

MATLAB Function Reference

cumprod

Cumulative product

Syntax

```
B = cumprod(A)
B = cumprod(A,dim)
```

Description

B = cumprod(A) returns the cumulative product along different dimensions of an array.

If A is a vector, cumprod(A) returns a vector containing the cumulative product of the elements of A.

If A is a matrix, cumprod(A) returns a matrix the same size as A containing the cumulative products for each column of A.

If A is a multidimensional array, cumprod(A) works on the first nonsingleton dimension.

B = cumprod(A,dim) returns the cumulative product of the elements along the dimension of A specified by scalar dim. For example, cumprod(A,1) increments the first (row) index, thus working along the rows of A.

Examples

cumprod(1:5)
ans =  
     1  2  6  24  120

A = [1 2 3; 4 5 6];

cumprod(A)
ans = 
     1     2     3
     4    10    18

cumprod(A,2)
ans = 
     1     2     6
     4    20   120

See Also

cumsum, prod, sum

csvwrite cumsum