BIOPAC® Systems, Inc. Logo

Text files – import and export

Saving an AcqKnowledge file as a text file.

In the exported text file each column represents data from a different channel. If Horizontal scale values was selected then the first column contains the time values. Here is an example of an exported text file.

C:testfile.txt
10.000000 msec/sample
3 channels
Blood Pressure
mmHg
EMG
volts
GSR
microsiemens
ms CH0 CH1 CH2
2 2 2
0,87.2121333,1.010376,3.010376
10,87.1100708,1.0100708,3.0100708

In the above example, the values should be interpreted as follows:
Blood Pressure: 87.2121333, 87.1100708
EMG: 1.010376, 1.0100708
GSR:3.010376, 3.0100708
Time: 0,10 (msec)
Importing a text file into AcqKnowledge.
1. Go to File > Open
2. From Files of type select Text file
3. Click on the Options button
The Read line option allows you to import only a section of the file
The Interval option allows you to define the sample rate
The Column delimiter allows you to specify how columns of data are separated
When importing a text file it should have the following format (the delimiter could be a comma, tab or a space):
1,2,3
11,22,33
111,222,333
1111,2222,3333
Every row corresponds to a sample point at a given time and every column contains the data for a different channel. For the above example, if the sample rate was 1 second, the file will be interpreted as follows:
Channel/Time1sec2sec3sec4sec
Channel 11111111111
Channel 22222222222
Channel 33333333333

Associated Applications

Associated Application Notes

Associated Disciplines

Spotlight On
free BIOPAC webinar

Eye Tracking Fundamentals

Eyes are the window to the soul and, more importantly, the brain. Psychophysiology, neuroscience, and consumer neuroscience researchers use eye tracking technology to understand emotion, behavior, subject response, decision-making, and human performance—and to help improve products and services. But not everyone knows where to start or how and why to use this important technology. A panel of eye tracking experts will present typical use cases and the latest eye tracking technology.

Watch this on-demand presentation with Q&A to learn the fundamentals of eye tracking!

Register Now
Latest News

New Citations | Using Wireless Technology to Support Psych Research

Solving Physical Stress Issues for Surgeons Physical stress in the operating room is common for surgeons, considering how much time they spend in an upright standing position during surgical procedures. With procedures that require standing for several hours and average reported working times of 60-80 hours a week, surgeons seem to be at risk for musculoskeletal […]

New Eye Tracking Glasses Bring Real-world Data to Academic Research

BIOPAC combines eye tracking with mobile data logging and physiology data collection to run experiments in the lab or in the real world BIOPAC Systems, Inc. is pleased to announce new eye tracking integration for researchers who conduct experiments from mobile participants in diverse locations. ETVision (EYE-ETV) eye tracking glasses now integrate with BIOPAC wireless systems and software, […]

Read All
Request a Demonstration
Request a Demonstration