Matlab: Import .csv-file via textscan

Question

Im working on a program which shall manipulate .csv files from an Experiment. Therefore i want to use the command textscan, which sounds really suitable for my Problem. But I got problems with the implementation of the code. My code Looks like this:

fid = fopen('filename.csv'); 
data = textscan(fid, '%*s %f %f %f %f %f', 'delimiter', ';', 'headerlines', 3); 
fclose(fid);

For fid I get the value "4". I dont understand why i get a number. Shouldnt I get an cell Array of my file? My file consists of 3 Header, 1 column with text and the rest are numbers.

Thank you very much in anticipation! Best Regards!

Answer 1

The fid is a file identifier, that is, a number that is used to refer to that file. That's the number you pass to textscan to read the file's contents. Those contents will be stored in data.