matrix — reshape a vector or a matrix to a different size matrix
y=matrix(v,n,m) y=matrix(v,[sizes])
a vector, a matrix or an hypermatrix
integers
vector of integers
a vector, a matrix or hypermatrix
For a vector or a matrix with n
x m
entries, the command
y=matrix(v,n,m)
or similarily y=matrix(v,[n,m])
transforms the v
vector (or matrix) into an nxm
matrix by
stacking columnwise the entries of v
.
if one of the dimension m or n is equal to -1 it is automatically assigned to the quotient of size(v,'*') by the other dimension,
For an hypermatrix such as
prod(size(v))==prod(sizes)
, the command y=matrix(v,sizes)
(or
equivalently y=matrix(v,n1,n2,...nm)
) transforms
v
into an matrix or hypermatrix by
stacking "columnwise" (first dimension is varying first) the entries of v
. y=matrix(v,sizes)
results in a regular matrix if sizes is a scalar or a 2-vector.