Issue when reading csv file using textscan()

I want to read dataset.csv in my program. I have the following code:

filename = 'dataset.csv';
delimiter = '\t';
formatSpec = '%f%f%[^\n\r]';
fileID = fopen(filename,'r');
dataArray = textscan(fileID, formatSpec, 'Delimiter', delimiter,  'ReturnOnError', false);
fclose(fileID);

However, I get this error:

Error using textscan
Invalid file identifier. Use fopen to generate a valid file identifier.

Can someone tell me the issue? I couldn't spot it!!

[Nick]

Is the .csv file you are trying to open in your current matlab directory?

[per isakson]

Try to use the fully qualified file name; something like

filename = 'c:\folder\of\the\file\dataset.csv';

[Ahmad Aseeri]

Thank you guys for responding. The dataset is in the same directory. I used the full path and got this error:

Error using textscan
Mismatch between file and format character vector.
Trouble reading 'Numeric' field from file (row number 1, field number 1) ==> # Undirected graph: ../../data/output/lj.ungraph.txt\n

[Star Strider]

You need to look at the file in a text editor to see what it contains. Using textscan with the 'HeaderLines' name-value pair seems an attractive option.

Answer 1

[Image Analyst]

You forgot to include the csv file so we're all going to be guessing here until you do. If you want a fast answer, you should attach the csv file so we can see what's wrong with it.

If the delimiter is a tab, then it's not a csv file despite the extension of csv that you incorrectly gave it. So you can't use csvread(). I suggest you try dlmread(). If you have headerlines, dlmread() now lets you specify how many header lines to skip by specifying the proper starting row and column.