Use matlab to open .dat file from EEG recording

I have a .DAT file which I want to open in MATLAB (simply changing the file to .txt or trying to open with other programs doesn't work).

I recorded an EEG using 3 recording channels. When I use the following code in an attempt to open it, I get a 60,000 cell, one column output.

>> fid=fopen('Eg1.dat', 'r'); [x,count]=fread(fid, 'float'); fclose(fid);

The EEG channels record the voltage over a period of time. I want to have 4 columns on the output - X being time, Y1,Y2,Y3 being the three channels I recorded with. If anyone has any pointers of where I'm going wrong, I'd be grateful for their help.

Audrey

Answer 1

[Walter Roberson]

 [x,count] = fread(fid, [4 inf], 'float').';

or

[x,count] = fread(fid, 'float');
x = reshape(x, [], 4);

Which of the two to use depends on whether the channels are interweaved or if all of one channel occurs before the next channel (the second case)