Programmer Guide/Command Reference/EVAL/vvcat: Difference between revisions
From STX Wiki
< Programmer Guide | Command Reference | EVAL
Jump to navigationJump to search
m (1 revision: Initial import) |
No edit summary |
||
| Line 1: | Line 1: | ||
{{DISPLAYTITLE:{{SUBPAGENAME}}}} | {{DISPLAYTITLE:{{SUBPAGENAME}}}} | ||
Create a vector by alternately concatenating the elements of the source vectors. | |||
;Usage: '''<code>vvcat(<var>x1</var> {, <var>x2</var> {, ...}})</code>''' | |||
:;<var>x1</var>, <var>x2</var>, ...: vectors with the same length | |||
;Result: The result is a vector with <code>n*nrow(''x1'')</code> elements, with ''n'' is the number of arguments. The elements of the source vectors are alternatly assigned to the result: <code>r = { x1[0], x2[0], .., x''n''[0], x1[1], x2[1], .., x''n''[1], .. }</code>. | |||
;See also: [[Programmer_Guide/Command_Reference/EVAL/vv|vv]], [[Programmer_Guide/Command_Reference/EVAL/vvset|vvset]], [[Programmer_Guide/Command_Reference/EVAL/vvset|vvset]], [[Programmer_Guide/Command_Reference/EVAL/vmcol|vmcol]], [[Programmer_Guide/Command_Reference/EVAL/vmrow|vmrow]], [[Programmer_Guide/Command_Reference/EVAL/vsubn|vsubn]], [[Programmer_Guide/Command_Reference/EVAL/vsubc|vsubc]] | |||
Example: | |||
<pre> | |||
#a := eval vv(1,1,1,1} | |||
#b := eval vv(2,2,2,2} | |||
#c := eval vv(3,3,3,3} | |||
#d := eval vvcat($#a,$#b,$#c) | |||
// -> #d = { 1 , 2 , 3 , 1 , 2 , 3 , 1 , 2 , 3 , 1 , 2 , 3 } | |||
</pre> | |||
[[Programmer_Guide/Command_Reference/EVAL#Functions|<function list>]] | |||
Revision as of 08:08, 6 April 2011
Create a vector by alternately concatenating the elements of the source vectors.
- Usage
vvcat(x1 {, x2 {, ...}})- x1, x2, ...
- vectors with the same length
- Result
- The result is a vector with
n*nrow(x1)elements, with n is the number of arguments. The elements of the source vectors are alternatly assigned to the result:r = { x1[0], x2[0], .., xn[0], x1[1], x2[1], .., xn[1], .. }. - See also
- vv, vvset, vvset, vmcol, vmrow, vsubn, vsubc
Example:
#a := eval vv(1,1,1,1}
#b := eval vv(2,2,2,2}
#c := eval vv(3,3,3,3}
#d := eval vvcat($#a,$#b,$#c)
// -> #d = { 1 , 2 , 3 , 1 , 2 , 3 , 1 , 2 , 3 , 1 , 2 , 3 }
