Difference between revisions of "DataHub"

From TSG Doc
Jump to navigation Jump to search
 
Line 33: Line 33:
 
     | header2            = Templates
 
     | header2            = Templates
 
     | data2              = {{bulleted list
 
     | data2              = {{bulleted list
         | [https://surfdrive.surf.nl/files/index.php/s/LN5KRN9cB3mvPp3 Template 2017 (zip)]
+
         | [https://surfdrive.surf.nl/files/index.php/s/qggfMMKsnUIDO0k example scripts (zip)]
        | [https://surfdrive.surf.nl/files/index.php/s/LN5KRN9cB3mvPp3 Template 2018 (zip)]
 
 
     }}
 
     }}
 
   }}
 
   }}

Latest revision as of 15:12, 1 February 2022

DataHub
Developer(s)Christian Kothe; Chadwick Boulay.
Development status-in development-
Written inC, C++, Python, Java, C#, MATLAB
Operating systemWindows, Linux, MacOS, Android, iOS
TypeData collection
LicenseOpen source
WebsiteLSL webpage
Manuals

The DataHub Makes use of the lab streaming layer. The lab streaming layer (LSL) is a system for the unified collection of measurement time series in research experiments that handles both the networking, time-synchronization, (near-) real-time access as well as optionally the centralized collection, viewing and disk recording of the data.


Installation

Our support for LSL is mainly done in python. Download python here: Please choose a 64 bit version.. Run the installer and make sure to add Python to the file path (it's an option in the installer). Open a command prompt, start with upgrading the pip installer by typing:
c:>python -m pip install --upgrade pip
Then:
c:>pip install pylsl

more info: cross platform pylsl

Versions

The TSG uses the version 1.15.0. Open a command and type the following to find the version used:

c:>python
>>> import pylsl
>>> print(pylsl.__version__)

Usage

Python

A short example for sending lsl streaming data:

 1#!/usr/bin/env python
 2
 3import threading
 4from pylsl import StreamInfo, StreamOutlet
 5
 6def getData():
 7    while running:
 8        buffer_in = getSensorData()
 9        send_data = True
10        time.sleep(0.001)
11
12info = StreamInfo(
13    name='MyStream', 
14    type='COP', 
15    channel_count=4, 
16    nominal_srate = 200, 
17    source_id='BalanceBoard_stream'
18    )
19outlet = StreamOutlet(info) 
20
21threading.Thread(target=getData).start()
22while running == True:
23	if send_data:
24		outlet.push_chunk(buffer_in)
25		send_data = False

A short example for receiving lsl data:

 1#!/usr/bin/env python
 2
 3from pylsl import StreamInlet, resolve_stream
 4
 5streams = resolve_stream('name', 'MyStream')
 6#streams = resolve_streams()
 7
 8inlet = StreamInlet(streams[0])
 9while True:
10    sample, timestamp = inlet.pull_sample()
11    print(timestamp, sample)