reset

Class: qrandstream

Reset state

reset(q)

Description

reset(q) resets the state of the quasi-random number stream q of the qrandstream class back to its initial state, 1. Subsequent points drawn from the stream will be the same as those drawn from a new stream. The command is equivalent to q.State = 1.

Examples

Use qrandstream to construct a 3-D Halton stream, based on a point set that skips the first 1000 values and then retains every 101st point:

q = qrandstream('halton',3,'Skip',1e3,'Leap',1e2)
q =
Halton quasi-random stream in 3 dimensions
Point set properties:
Skip : 1000
Leap : 100
ScrambleMethod : none

nextIdx = q.State
nextIdx =
1

Use qrand to generate two samples of size four:

X1 = qrand(q,4)
X1 =
0.0928    0.3475    0.0051
0.6958    0.2035    0.2371
0.3013    0.8496    0.4307
0.9087    0.5629    0.6166
nextIdx = q.State
nextIdx =
5

X2 = qrand(q,4)
X2 =
0.2446    0.0238    0.8102
0.5298    0.7540    0.0438
0.3843    0.5112    0.2758
0.8335    0.2245    0.4694
nextIdx = q.State
nextIdx =
9

Use reset to reset the stream, then generate another sample:

reset(q)
nextIdx = q.State
nextIdx =
1

X = qrand(q,4)
X =
0.0928    0.3475    0.0051
0.6958    0.2035    0.2371
0.3013    0.8496    0.4307
0.9087    0.5629    0.6166