How to load a .dat file?

How to load a .dat file? I saved the Oscilloscope(waverunner 610zi) Please refer to the attached file and let me know.

[Ameer Hamza]

The files you attached are empty. They don't contain any Oscilloscope readings.

[milksba]

Can you check it again?

[Ameer Hamza]

Yes, the file now contains the data. Please check my answer below.

Answer 1

[Ameer Hamza]

You can import the file easily by import tool

uiimport

but if you want to import it programatically, do it like this

f = fopen('M1--L10-22 TR SW--00000.dat');
data = textscan(f, '%f %f');
data = cell2mat(data); % convert to matrix from cell array
fclose(f)

[Stephen23]

Never fopen a file without also fclose-ing it!

Opening lots of files without closing is a common cause of questions on this forum. Beginners do this and get very confused when MATLAB unexpectedly fails after too many files were opened.

It is also recommended to check the fopen status, e.g.:

fnm = 'M1--L10-22 TR SW--00000.dat'
[fid,msg] = fopen(fnm,'rt');
assert(fid>=3,msg)
...
fclose(fid);

[Ameer Hamza]

@Stephen thanks for pointing out. This can create problems if one is not careful.

[milksba]

I can't do both. Can you check it again?

[Ameer Hamza]

What is the error?

[milksba]

Complete verification.

I have another question. Can you solve it?

I want to draw the corresponding file, Waveform, FFT file.

But I think my coding has a problem. Can you look at it?

I want to set the frequency in MHz

The code is in the zip file.