hv.drunk-help.pd

#N canvas 807 78 551 416 10;
#X msg 161 60 seed 1234;
#X obj 63 223 print;
#X obj 63 85 metro 1000;
#X obj 67 58 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0 1
;
#X msg 172 103 200;
#X msg 159 155 3;
#X text 189 152 max step size;
#X text 73 271 A random walk (drunk) is a special case of a Markov
chain \, in which the states are integers and the transitions add or
subtract a small amount (or zero) from the previous state to get a
new one. Here the "f" holds the state. When it gets a bang \, the previous
state is added to a random number (from 0 to $bound) multiplied by
a random sign (-1 or 1). The new value is then coerced into the range
from 0 to $bound;
#X text 202 105 bound;
#X obj 63 189 hv.drunk 100 5;
#X connect 0 0 9 0;
#X connect 2 0 9 0;
#X connect 3 0 2 0;
#X connect 4 0 9 1;
#X connect 5 0 9 2;
#X connect 9 0 1 0;