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Scilab help >> Data Structures > hypermatrices

# hypermatrices

Scilab object, N dimensional matrices in Scilab

### Description

Hypermatrix type allows to manipulate multidimensional arrays

They can be defined by extension of 2D matrices as follows a=[1 2;3 4];a(:,:,2)=rand(2,2)

or directly using `hypermat` function

Entries can be real or complex numbers, polynomials, rationals, strings, booleans.

Hypermatrices are `mlists`: `mlist(['hm','dims','entries'],sz,v)` where `sz` is the row vector of dimensions and `v` the column vector of entries (first dimension are stored first)

NOTES: The number of dimension of hypermatrices with right-most sizes equal to 1 are automatically reduced. An hypermatrix with only two dimensions is automatically changed to a regular matrix (type 1).

### Examples

```a(1,1,1,1:2)=[1 2]
a=[1 2;3 4];a(:,:,2)=rand(2,2)
a(1,1,:)

size(a)

a(:,:,1) //dimensionnality reduction
type(a(:,:,1))

[a a]```