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

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|Create a copy of the vector x and replace the elements <var>o</var>+i*<var>d</var> (i = 0..nrow(<var>y</var>)-1) with the values <var>y</var>[i]
|Create a copy of the vector x and replace the elements <var>o</var>+i*<var>d</var> (i = 0..nrow(<var>y</var>)-1) with the values <var>y</var>[i]
|}
|}
{{DISPLAYTITLE:{{SUBPAGENAME}}}}
Create a copy of the vector ''x'' and replace elements.
----
;Usage 1: '''<code>vvset(<var>x</var> , <var>y</var> {, <var>o</var> {, <var>d</var>, <var>n</var>}}})</code>'''
:;<var>x</var>: source vector
:;<var>y</var>: replace value
:;<var>o</var>: starting index, 0 <= o < <code>nrow(''x'')</code> (default=0)
:;<var>d</var>: index increment (default=1)
:;<var>n</var>: number of values to replace (default=<code>nrow(''x'')</code>)
;Result 1: The result ''r'' is copy of the vector ''x''. All elements ''r''[''o''+''i''*''d''] (''i'' = 0..''n''-1) are replaced by the value ''y''.
----
;Usage 2: '''<code>vvset(<var>x</var> , <var>y</var> {, <var>o</var> {, <var>d</var>}})</code>'''
:;<var>x</var>: source vector
:;<var>y</var>: replace vector
:;<var>o</var>: starting index, 0 <= o < <code>nrow(''x'')</code> (default=0)
:;<var>d</var>: index increment (default=1)
;Result 1: The result ''r'' is copy of the vector ''x''. All elements ''r''[''o''+''i''*''d''] (''i'' = 0..nrow(''y'')-1) are replaced by the value ''y''[''i''].
----
The function failes if an index value is out of bounds.
;See also: [[Programmer_Guide/Command_Reference/EVAL/vv|vv]], [[Programmer_Guide/Command_Reference/EVAL/vvget|vvget]], [[Programmer_Guide/Command_Reference/EVAL/vvcat|vvcat]], [[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(1,2,4,8,16,32)
#b := eval vvget($#a, 0, 2, 3)
// -> #b = { 1 , 4 , 16 }
#c := eval vvget($#a, 5, -1, 4)
// -> #c = { 32, 16, 8, 4 }
</pre>
[[Programmer_Guide/Command_Reference/EVAL#Functions|<function list>]]

Revision as of 07:51, 6 April 2011

vvset
vvset(x, yS, o, d, n) Create a copy of the vector x and replace the elements o+i*d (i = 0..n-1) with the value ys.
vvset(x, y, o, d) Create a copy of the vector x and replace the elements o+i*d (i = 0..nrow(y)-1) with the values y[i]


Create a copy of the vector x and replace elements.


Usage 1
vvset(x , y {, o {, d, n}}})
x
source vector
y
replace value
o
starting index, 0 <= o < nrow(x) (default=0)
d
index increment (default=1)
n
number of values to replace (default=nrow(x))
Result 1
The result r is copy of the vector x. All elements r[o+i*d] (i = 0..n-1) are replaced by the value y.

Usage 2
vvset(x , y {, o {, d}})
x
source vector
y
replace vector
o
starting index, 0 <= o < nrow(x) (default=0)
d
index increment (default=1)
Result 1
The result r is copy of the vector x. All elements r[o+i*d] (i = 0..nrow(y)-1) are replaced by the value y[i].

The function failes if an index value is out of bounds.

See also
vv, vvget, vvcat, vmcol, vmrow, vsubn, vsubc

Example:

#a := eval vv(1,2,4,8,16,32)
#b := eval vvget($#a, 0, 2, 3) 
// -> #b = { 1 , 4 , 16 }
#c := eval vvget($#a, 5, -1, 4)
// -> #c = { 32, 16, 8, 4 }

<function list>

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