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.TH matrix 1 "April 1993" "Scilab Group" "Scilab Function"
.so ../sci.an
.SH NAME
matrix - reshape a vector or a matrix to a different size matrix
.SH CALLING SEQUENCE
.nf
y=matrix(v,n,m)
y=matrix(v,[sizes])
.fi
.SH PARAMETERS
.TP 10
v
: a vector, a matrix or an hypermatrix
.TP 10
n,m
: integers
.TP 10
sizes
: vector of integers
.TP 10
y
: a vector matrix or hypermatrix
.SH DESCRIPTION
For a vector or a matrix with \fVn\fR x \fVm\fR entries
\fVy=matrix(v,n,m)\fR or similarily \fVy=matrix(v,[n,m])\fR.
transforms the \fVv\fR vector (or matrix) into an \fVnxm\fR matrix by
stacking columnwise the entries of \fVv\fR.
.LP
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,
.LP
For an hypermatrix such as
\fVprod(size(v))==prod(sizes)\fR,\fVy=matrix(v,sizes)\fR (or
equivalently \fVy=matrix(v,n1,n2,...nm)\fR) transforms
\fVv\fR into an matrix or hypermatrix by
stacking columnwise the entries of \fVv\fR. \fVy=matrix(v,sizes)\fR
results in a regular matrix if sizes is a scalar or a 2-vector.
.SH SEE ALSO
matrices, hypermatrices, ones, zeros, rand, poly, empty
.SH EXAMPLES
.nf
a=[1 2 3;4 5 6]
matrix(a,1,6)
matrix(a,1,-1)
matrix(a,3,2)
.fi
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