vvset

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Create a copy of the vector x and replace elements.


Usage 1
vvset(x , y {, o {, d, n}}})
x
source vector
y
replace value (scalar)
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] (with: 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 2
The result r is copy of the vector x. All elements r[o+i*d] (with: i = 0..nrow(y)-1) are replaced by the value y[i].

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

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

<function list>


Example:

#a := eval fill(10,0,1)
#b := eval vvset($#a, -1, 1, 2, 5) 
// → #b = { 0 , -1 , 2 , -1 , 4 , -1 , 6 , -1 , 8 , -1 }
#c := eval vvset($#b, fill(4, 9, -3), 6, 1)
// → #c = { 0 , -1 , 2 , -1 , 4 , -1 , 9 , 6 , 3 , 0 }
// reverse vector indeces
#arev := eval vvset($#a, $#a, $#a[]-1, -1)
// → #arev = { 9 , 8 , 7 , 6 , 5 , 4 , 3 , 2 , 1 , 0 }