<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
</head>
<body dir="ltr">
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Hi everyone, </div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
I'm a master's student, new to the Fieldtrip community - I'm currently working on analyzing data for my research project involving an MEG sustained attention button-press task. </div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<span style="color: rgb(0, 0, 0); font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;"><br>
</span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<span style="color: rgb(0, 0, 0); font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;">When trying to run a script that gets stimulus onset and button press timings for each participant, I encounter an error at the first line with the fieldtrip
function </span><b style="font-size: 12pt; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit;">ft_read_event</b><span style="color: rgb(0, 0, 0); font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;">. Could this
be an error in my fieldtrip path or installation? </span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<span style="color: rgb(0, 0, 0); font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;"><br>
</span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<span style="color: rgb(0, 0, 0); font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;">I have already tried basic troubleshooting for the fieldtrip path, but this doesn't seem to solve it. The script is running fine for others, so it seems
to be an issue with my computer/FieldTrip specifically. </span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
The line of code is:</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
evt = ft_read_event(fullfile(myDir, fileID));</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
I get the following error message:</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<span style="font-size: 11pt;">Reading 6000 ... 174999 = 12.000 ... 349.998 secs...</span><span style="font-size: 11pt; color: rgb(200, 38, 19);">Error using reshape
</span>
<div><span style="font-size: 11pt; color: rgb(200, 38, 19);">Number of elements must not change. Use [] as one of the size inputs to automatically calculate the appropriate size for that</span></div>
<div><span style="font-size: 11pt; color: rgb(200, 38, 19);">dimension.</span></div>
<div><br>
</div>
<div><span style="font-size: 11pt; color: rgb(200, 38, 19);">Error in fiff_read_raw_segment (line 161)</span></div>
<div><span style="font-size: 11pt; color: rgb(200, 38, 19);"> one = double(reshape(tag.data,nchan,this.nsamp));</span></div>
<div><br>
</div>
<div><span style="font-size: 11pt; color: rgb(200, 38, 19);">Error in ft_read_data (line 1251)</span></div>
<div><span style="font-size: 11pt; color: rgb(200, 38, 19);"> dat = fiff_read_raw_segment(hdr.orig.raw,begsample+hdr.orig.raw.first_samp-1,endsample+hdr.orig.raw.first_samp-1,chanindx);</span></div>
<div><br>
</div>
<div><span style="font-size: 11pt; color: rgb(200, 38, 19);">Error in read_trigger (line 82)</span></div>
<div><span style="font-size: 11pt; color: rgb(200, 38, 19);"> dat = ft_read_data(filename, 'header', hdr, 'dataformat', dataformat, 'begsample', begsample, 'endsample', endsample, 'chanindx',</span></div>
<div><span style="font-size: 11pt; color: rgb(200, 38, 19);"> chanindx, 'checkboundary', 0);</span></div>
<div><br>
</div>
<div><span style="font-size: 11pt; color: rgb(200, 38, 19);">Error in ft_read_event (line 1637)</span></div>
<div><span style="font-size: 11pt; color: rgb(200, 38, 19);"> trigger = read_trigger(filename, 'header', hdr, 'dataformat', dataformat, 'begsample', flt_minsample, 'endsample',</span></div>
<div><span style="font-size: 11pt; color: rgb(200, 38, 19);"> flt_maxsample, 'chanindx', binaryindx, 'detectflank', detectflank, 'denoise', denoise, 'trigshift', trigshift, 'trigpadding',</span></div>
<span style="font-size: 11pt; color: rgb(200, 38, 19);"> trigpadding, 'fixneuromag', false);</span><br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<span style="font-size: 11pt; color: rgb(200, 38, 19);"><br>
</span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<span style="font-size: 11pt; color: rgb(200, 38, 19);">Error in getButtonPresses (line 21)</span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<span style="font-size: 11pt; color: rgb(200, 38, 19);">evt = ft_read_event(fullfile(myDir,fileID));</span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<span style="font-size: 11pt;"><br>
</span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<span style="font-size: 12pt;">I thought this might be an error with my fieldtrip path, and I have tried restoring the default path like this:</span></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
>> restoredefaultpath</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
>> addpath('C: (location of fieldtrip)')</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
>> ft_defaults</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
However, the problem is not resolved after this. </div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
I also looked at each function using <b>>> which ft_read_event </b>etc.</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<span style="color: rgb(0, 0, 0); font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;">It returns a similar location for each function (C:/Admin/AppData/Roaming/MathWorks/MATLAB Add-Ons/Collections/FieldTrip/fileio/ft_read_event.m) but </span><b style="font-size: 12pt; font-style: inherit; font-variant-ligatures: inherit; font-variant-caps: inherit;">read_trigger</b><span style="color: rgb(0, 0, 0); font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;">
is not found. </span><br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
My MATLAB is located on the computer under "Program Files" in case this is relevant. </div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Matlab version: 9.8.0.1380330 (R2020a) Update 2</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
OS build: 19042.804/Windows 10</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Any help or advice is greatly appreciated!</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Kind Regards,</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Merethe Blandhol</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
</body>
</html>