Programmer Guide/Command Reference/EVAL/vvcat: Difference between revisions
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=====vvcat= | 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, where ''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: [[../vv|vv]], [[../vvset|vvset]], [[../vvset|vvset]], [[../vmcol|vmcol]], [[../vmrow|vmrow]], [[../vsubn|vsubn]], [[../vsubc|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,$#c) | |||
// → #d = { 1 , 2 , 3 , 1 , 2 , 3 , 1 , 2 , 3 , 1 , 2 , 3 } | |||
[[../#Functions|<function list>]] | |||
Latest revision as of 20:04, 21 April 2011
Create a vector by alternately concatenating the elements of the source vectors.
- Usage
vvcat(x1 {, x2 {, ...}})- x1, x2, ...
- vectors with the same length
- Result
- The result is a vector with
n*nrow(x1)elements, where n is the number of arguments. The elements of the source vectors are alternatly assigned to the result:r = { x1[0], x2[0], .., xn[0], x1[1], x2[1], .., xn[1], .. }. - See also
- vv, vvset, vvset, vmcol, vmrow, vsubn, vsubc
- Example
#a := eval vv(1,1,1,1}
#b := eval vv(2,2,2,2}
#c := eval vv(3,3,3,3}
#d := eval vvcat($#a,$#b,$#c)
// → #d = { 1 , 2 , 3 , 1 , 2 , 3 , 1 , 2 , 3 , 1 , 2 , 3 }
