How do I get the latest data ^^

Hi

We use the sm 130 which is fbg sensor, and our project object is to show how sensor works in 2D

so we use program that is from labview. with it, we can get a wavelength data continously.

we want to make sensor that moves continously

We want to know how to get the latest data from streaming text.

Upload text file is the file we got from the steraming files,

% assume that you are running code in folder your file exists
 % open the file
 fid = fopen('147');
 if fid>0
     % loop until end of file is reached
     while ~feof(fid)
         % read the current line
         line = fgetl(fid);
         disp(line(25:33))
        
        
         % extract data from the line
         % plot the data
         % wait two seconds until continuing with next line
         pause(0.1);
     end
     % close the file
     fclose(fid);
 end

That code is once we write down.

But we want to get the lastest data like 1540.6710, 1550.0917 (two data)

And we use the lastest data at a, b under the code.

 timesToRun = 100;
duration = 1;
tPause(timesToRun) = 0;  % pre-allocate
for idx = 1 : timesToRun
   tic   
>> a=2*10^-6;
>> b=3*10^-6;
>> c=1.2*10^-6;
>> d=2.2*10^-6;
>> e=(a-c)/2;
>> f=(b-d)/2;
>> g=669.77442*e;
>> h=665.1501244*f;
>> i=9.8765*g*(10^-6)-2.959025*h*10^-4;
>> j=-5.185167*g*(10^-3)+0.110963*h;
>> k=0.9999975*g-9.9866625*h; 
>> x=[0:1:150]
>> y=(i*x.^4)+(j*x.^3)+(k*x.^2);
>> plot(x,y);
pause(duration);                        % Note: pause() accepts [Secs] duration
   tPause(idx) = abs(toc-duration);
end

and the rest (c,d) is what we will use another streaming data

with these codes, we want to show plot working continously

Please help us how to code for finding the last data.

[Walter Roberson]

Please show a sample of what line looks like after you have done

line = fgetl(fid);

[SeungWhan Jo]

just processing and do not end the processing

[Walter Roberson]

Put a breakpoint in at the statement

line = fgetl(fid);

and execute your code. When it stops,

disp(line)

and show us the result.