/usr/share/SuperCollider/HelpSource/Classes/Ppoisson.schelp is in supercollider-common 1:3.8.0~repack-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 | class:: Ppoisson
summary:: random values that follow a Poisson Distribution (positive integer values)
related:: Classes/Pgauss
categories:: Streams-Patterns-Events>Patterns>Random
ClassMethods::
method::new
argument::mean
The mean of the distribution.
argument::length
Number of values produced.
Examples::
code::
(
var a, c, w;
a = Ppoisson(1.0, inf);
c = a.asStream.nextN(500);
w = Window.new("Ppoisson", Rect(10, 10, 540, 800));
// plot the values
c.plot(bounds: Rect(10, 10, 520, 380), discrete: true, parent: w);
// a histogram of the values
c.histo(500).plot(bounds: Rect(10, 410, 520, 380), parent: w);
)
(
var a, c, w;
a = Ppoisson(10.0, inf);
c = a.asStream.nextN(500);
w = Window.new("Ppoisson", Rect(10, 10, 540, 800));
// plot the values
c.plot(bounds: Rect(10, 10, 520, 380), discrete: true, parent: w);
// a histogram of the values
c.histo(500).plot(bounds: Rect(10, 410, 520, 380), parent: w);
)
// sound example
(
SynthDef(\help_sinegrain,
{ arg out=0, freq=440, sustain=0.05;
var env;
env = EnvGen.kr(Env.perc(0.01, sustain, 0.2), doneAction:2);
Out.ar(out, SinOsc.ar(freq, 0, env))
}).add;
)
(
var a;
a = Ppoisson(1.0,inf).asStream;
{
loop {
Synth(\help_sinegrain, [\freq, (a.next + 72).midicps]);
0.02.wait;
}
}.fork;
)
(
var a;
a = Ppoisson(7.0,inf).asStream;
{
loop {
Synth(\help_sinegrain, [\freq, (a.next + 72).midicps]);
0.02.wait;
}
}.fork;
)
::
|