Use fopen to generate a valid file identifier matlab

Search MathWorks. MathWorks Answers Support. Close Mobile Search. Software de prueba. You are now following this question You will see updates in your followed content feed. You may receive emails, depending on your communication preferences. Error using fread Invalid file identifier. Use fopen to generate a valid file identifier. Show older comments. Jordan Stocker on 5 Jun Vote 0. Accepted Answer: Stephen. Accepted Answer. Stephen on 5 Jun Active 4 years, 9 months ago. Viewed 2k times. I'm trying to read a sequence of files with textscan , but I keep getting this error: Error using textscan Invalid file identifier.

Use fopen to generate a valid file identifier. How can I make this work? Hadi GhahremanNezhad Hadi GhahremanNezhad 2, 3 3 gold badges 16 16 silver badges 41 41 bronze badges. Just for reference, on my system both commands work and don't return -1 with or without string concatenation.

I am on Linux though, and it seems you are on Windows. UJIN yes I am using windows. The second command is in a for loop , so I can't use it like the first one. Yes, I understand that you need to use the second version. Unfortunately I can't reproduce the behavior you are experiencing, both are working fine for me. You will have to wait someone who can, and probably who uses Windows. Add a comment.

Active Oldest Votes. The help of fopen states: On Unix, text and binary mode are the same, so this has no effect. Richard Richard 1, 7 7 silver badges 16 16 bronze badges. Yes, must definitely be this. Invalid file identifier. Use fopen to generate a valid file identifier.

Show older comments. Pranav Thiagarajan on 21 Nov Vote 0. Accepted Answer: Preethi. I am trying to open a file, skip the first 6 lines headers and extract data from the rest of the lines in the file.

Here is the code:. I am getting the error I have specified in the title. The value of fid returned is not -1 it is 4 at the moment and I do have access to the file, since I can open it in Notepad to view its contents.

I am not opening and closing the file multiple times, just once. Is there any reason I'm missing out? Thank you for your help. Accepted Answer. Preethi on 21 Nov Cancel Copy to Clipboard.