Matlab: Can't handle data - matlab

Question

I am writing a program in Matlab that reads in a Matrix coming from a sensor (microcontroller is an Arduino Leonardo). You can choose how fast the matrices are being recorded (e.g. 60 frames per min would be one matrix every second).
All that works great, but I had to create a default file that records all the matrices that would not be recorded (let’s say it’s fast enough to record 8 matrices per sec and you only want one per sec, then the default file would record the other seven). Otherwise I’d get kicked out of here:
%Get data
%Data is read as string (CSV)
data = str2double(strsplit(fgetl(serialPort), ','));
if and(get(hObject,'Value') == 1, correctPort == 1)
%try for right ports
try
%Reshape data (1D -> 2D array) and display in matrix
k = 1;
for i = 1:nrow
for j = 1:ncol
% Reading in tag names
tagNames{k} = ['tag_matrix_' num2str(k)];
% Creating matrix
data2d(row_index(i), col_index(j)) = data(k);
% Display in matrix
set(handles.(tagNames{k}),'String',data2d(i,j));
set(handles.(tagNames{k}),'visible','on');
k = k + 1;
end
end
catch
set(handles.tag_txt3,'String','This is not the correct port. Please look up the correct port in your Device Manager. Set up the right port and start again');
set(handles.tag_OnOff,'Value',0);
set(handles.tag_log,'Value',0);
set(handles.tag_log,'Enable','off')
correctPort = 0;
end
end
It goes through the loop a couple of time (a different number of times every time) but eventually I’ll get send to “catch”. This happens if i started recording or not. Doesn't matter.
If I have it display the matrices in the Command Window (data2d(row_index(i), col_index(j)) = data(k) without ;) it works.
Here is how I record the data:
% Open for writing
% Preparation
if and(startLog == 1, correctPort == 1)
set(handles.tag_txt3,'String','Program running and recording data');
end
% Set interval = recTime after logging (don't worry about that)
if and(startLog == 1, counter == 0)
interval = recTime;
counter = 1;
end
% Making sure you have to restart after stop logging
if and(startLog == 0, counter == 1)
set(handles.tag_OnOff,'Value',0)
end
% Record data when the time has come
if and(startLog == 1,time > interval)
fprintf(fid, '#');
fprintf(fid, '%u', matrixNumber);
fprintf(fid, '\n');
for i=1:size(data2d,1)
fprintf(fid, '%g\t', data2d(i,:));
fprintf(fid,'\n');
end
interval = recTime + interval;
matrixNumber = matrixNumber + 1;
%Making sure you have choosen a unit and send out error
elseif and(startLog == 1,recTime == 0)
set(handles.tag_txt3,'String','Choose a unit and start again');
set(handles.tag_OnOff,'Value',0)
set(handles.tag_log,'Value',0)
counter = 0;
else
%This is where the default file would be recording all the other matrices
end
Hope someone can help me. I didn't wanna put in the entire code because it's already ten pages. Please let me know if you have further questions.
Thank you so much in advance
Mike