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rndpick

Returns an array of randomly selected items from from an array.

Syntax

i/koutArr[] rndpick i/kinArr[], i/knum

i/koutArr[] = rndpick(i/kinArr[], i/knum)

Usage

rndpick returns an array, inum in length, of randomly selected items from the input array. Each item is only selected once. The selection will not contain duplicates if inum is less than the length of the input array.

Outputs and arguments

i/koutArr[] -- output array

i/kinArr[] -- input array

i/kndx -- index from which to retrieve the item.

Example

See the example for rndpick.orc

rndpick
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instr Sound101
  ;; Sound source

  ares fmbell p4,p5,1,1,p6,p7,-1,-1,-1,-1,-1,p3

send ares
endin

patchsig "Sound101", "outs"
;; connect sound to output.

instr Sched14

  idur = random:i(5,12)

  ichrd[] genarray 0,14,2
  ;; generate some intervals

  itriad[] rndpick ichrd, 3
  ;; select three random notes from ichrd, ensuring that no duplicate notes are selected.

  chrdi fillarray_i(n("Sound101"),0,idur,0.6,0,random:i(0.1,0.466), random:i(3,7)), itriad,-3
  ;; play the chord

  schedule p1, nextbeat(idur*0.7), 1
  ;; and around again
turnoff
endin

schedule "Sched14", nextbeat(1),1
;; start the show