how to Access data from a file?

Hello ,

I did not understand which command to use.i.e to use fscanf or any thing else?

I opened a text file as

fid_txt=fopen('fname.txt','w+');

I have written data onto a text file as shown below

fprintf (fid_txt,'%d %d \n',frame,vox(frame));

The above line repeats as it is in loop.

The "frame" is the frame number (integer) and "vox(frame)" acts as a switch. i.e. for example

vox(100)=1

vox(254)=0......

the value is either 1 or 0.

and finally closed the file.

Now the question is

1)how do i have to plot down the vaues of vox i.e. 1 or 0 but not the frame number.

2)how to plot ? The plot should be in a digital format,i.e "ON" for a frame and "OFF" for the other.It Should not be as a saw tooth display.

Kindly help me !! as i am new to matlab

Thanks in advance

[Jan]

Do I understand correctly that the problem has no connection to the method to write the file? Why do you post the code for writing the file then?

Do you mean, that it is possible to answer the question "how do I have to plot the values"? How could we know an answer?

What is a "plot" in a "digital format"? Are there any "analog formats" on a computer? Does "ON" mean a string? Or do you want to get single dots without a connection?

Answer 1

[Jan]

Perhaps, but this is based on guessing only, you want:

vox = double(rand(1, 100) > 0.5);  % Invented test data
plot(vox, '.');