How can I open a binary .dat file using matlab?

Hello everyone,

I am using a handheld radio-frequency spectrum analyzer to save a trace of spectrum. The problem is that the files I saved have a .dat format and really do not know how to read it in matlab. I tried openning it using a conventional text reader like word, notepad and wordpad but I saw only symbols in the file. . I tried:

fid = fopen('C:file.dat','r');
B = textscan(fid, '%f', 'HeaderLines',2);
B = B{1};
fclose(fid);

. but My answer for B is empty. I do not know what to do anymore, can you help me guyz?

Answer 1

[Azzi Abdelmalek]

Use fread to read binary files

[Kaio]

Could you please give me a example of a code that reads a .DAT file called test and plot the values of this file as it forms a waveform of the frequency spectrum? I have tried but it eid not work.

[Azzi Abdelmalek]

Attach your dat file

[Kaio]

Sorry for the delay, I was about to sleep, here in Brazil it is a different time zone. :)

I am attaching the .dat compressed in .rar file because I couldn't upload the .dat file itself. Thanks a lot.

Answer 2

[Kaio]

Let me tell you guyz what I am trying to do.

I am following Azzi's advice and trying to use fread. the syntax is more like that

fileId = fopen('filename.dat');
A = fread(fileId);

The problem is that I am receiving -1 as a answer for fopen and when I try using fread with fileId I get a message that says: "Invalid file identifier. Use fopen to generate a valid file identifier."

Does anyone know what can I do?