I am reading a text file \'mytext.text\' in matlab. Data file looks like:
1 -4436.6910 415.1843 -3019.7497 1,3,4,5,21,23
2 -4366.4541 1353.9975 -308
To read a single line do
% Read at most 4 elements
data1234 = fscanf (fid, '%d %f %f %f', 4);
% Read as many elements as possible, stop when no ',' is found
data5 = fscanf (fid, '%d,');
Continue reading lines until you reached the end of the file (save the data from each line before doing that). So you need some loop that continues doing this untill the file ends.