convert eye-tracking .edf file to ASC/CSV format

问题

I have a recording of tracking data in .edf format (SR-RESEARCH eyelink). I want to convert it to ASC/CSV format in python. I have the GUI application but I want to do it programmatically (in Python). I found the package pyEDFlib but couldn't find an example to how convert the eye-tracking .edf file to .asc or .csv.

What will the best best way to do it?

Thanks

回答1:

If I trust the page here: http://pyedflib.readthedocs.io/en/latest, you can run through all the signals in the file this way:

import pyedflib
import numpy as np

f = pyedflib.EdfReader("data/test_generator.edf")
n = f.signals_in_file
signal_labels = f.getSignalLabels()
sigbufs = np.zeros((n, f.getNSamples()[0]))
for i in np.arange(n):
    sigbufs[i, :] = f.readSignal(i)

The pyEDFlib library simply reads the file into an EdfReader object. Then you just need to go through and make row for each.

I assume that signal_labels (in the code above) will be an array with all the labels so make a comma separated string out of them

signal_labels_row = ",".join(signal_labels)

Then do the same for each signal, 1 comma separated String for each

Then simply write them in a file.

I can see they provide an example of how to read a file and extract all the data you need here https://github.com/holgern/pyedflib/blob/master/demo/readEDFFile.py

来源：https://stackoverflow.com/questions/48784257/convert-eye-tracking-edf-file-to-asc-csv-format