Programmer Guide/Command Reference/EVAL/vmcol: Difference between revisions

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[[Programmer_Guide/Command_Reference/EVAL#Functions|<function list>]]
[[Programmer_Guide/Command_Reference/EVAL#Functions|<function list>]]
=====vmcol=====
{|
|-
|vmcol(x1M, <var>x2</var>M,...)
|Create a matrix using the matrices x1M, <var>x2</var>M,... (the matrices must have the same number of rows as arguments).
|-
|vmcol(x1V, <var>x2</var>V,...)
|Create a matrix using the vectors x1v, <var>x2</var>v, .. (vectors with the same length) - one vector per column.The result is: a matrix (the number of vector elements * the number of vectors)
|}

Revision as of 08:33, 6 April 2011

Create a matrix by merging columns of source vectors and/or matrices.

Usage
vmcol(x1 {, x2 {, .. }})
x1, x2, ..
source vectors and/or matrices with the same number of rows
Result
A matrix with nrow(x1) rows. The columns of the arguments are merged from left to right.
See also
vv, vvget, vvset, vvcat, vmrow, vsubn, vsubc

Example: 

#a := eval vv(1,2,3,4,5)
#b := eval init(5,2,0)
#c := eval vmcol($#a, $#b, $#a) 
// -> $#c is a matrix with 5 rows and 4 columns:
//    $#c[*,0] = $#a,  #c[*,1] = $#b[*,0],  $#c[*,2] = $#b[*,1],  $#c[*,3] = $#a

<function list>

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