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]

See Also

• hypermat initialize an N dimensional matrices
• zeros matrix made of zeros
• ones matrix made of ones
• grand Random numbers
• matrix reshape a vector or a matrix to a different size matrix