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Old 05-16-2016, 07:25 AM
jelly jelly is offline
Join Date: Feb 2016
Posts: 38
Question Scheduling action at different timings using time.time()


I am trying to schedule an action (a beep sound) in Vizard. However, I want the beep to happen at certain timings since onset of the trial.

What I have so far gives me (for example, after running it once) a list of times "times: [ 1.89229142 5.2610474 9.86058804 11.43137033 13.87078666]" and is playing the beep at what seems to be varying intervals and prints out the elements of the above mentioned list. It's just that it's not actually using these elements as seconds/timings at which to play.

My question is: How do I make Python know that these are not just numbers, but timings since onset of the function/trial? Probably I am supposed to use time.time() somewhere, but I am just not sure about the logic of how to get there.

import time
import numpy as np
import viztask                                              

### Start Vizard ### 

### Cue sound ###
cue = viz.addAudio('cues\dong.wav') 
cueDuration = cue.getDuration() 

### Timings ###

def uniform_min_range(a, b, n, min_dist):
    while True:
        times = np.random.uniform(a, b, size=n)
        if np.all(np.diff(times) >= min_dist):
            return times

def timings():
    global times
    times = uniform_min_range(0, 20, 5, 1.0)
    print "times: ", times

def main():
    global times
    timesIndex =0
    for x in range(len(times)):
        cuetime = times[timesIndex]
        print 'cue'
        print cuetime
        yield viztask.waitTime(cueDuration + cuetime)
        timesIndex = timesIndex + 1

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Old 05-20-2016, 03:19 AM
Jeff Jeff is offline
WorldViz Team Member
Join Date: Aug 2008
Posts: 2,465
You can use the viz.tick command to get the time since the script has started.
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time, timing

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