How to read from LOG file

Question

TAPAN PATEL 2020-6-15

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/548589-how-to-read-from-log-file

评论： TAPAN PATEL 2021-7-5

Trial.txt

在 MATLAB Online 中打开

Hello all,

After trying a lot with 'fopen' and 'textscan' here I am posting my issue.

I have text file as attached. My goal is to read numerical values of 'HLP' and 'PSC' in saperate arrays and also the 1016 complex values which comes after 'Accum Len 1016' in another array.

since text file is updating in real time in windows 10, the above three arrays also needs to be read again and again.

After each reading I need to perform some calculations and plot the data.

After ploting and before reading new values I also need to store the previus data each time(But this is otional as of now).

here is my code:

f1 = fullfile(' file name ');
fid1 = fopen(f1); 
while ~feof(fid1)    
    tline1 = fgetl(fid1);   
    if contains (tline1,'HLP')
        HLP1 = textscan(tline1,'%s',7,'Delimiter','(,)');
%         HLP1 = textscan(tline1,'HLP=%n',7,'Delimiter','(,)');
%         Here some calculations 
   
    else if contains (tline1,'Accum Len')        
        Acc1 = double(cell2mat(textscan(fid1,'%d16 %d16',1016,'Delimiter',',')));
        Abs_Acc1=abs(Acc1);
        Mag1 =  max(Abs_Acc1,[],2) + 1/4*min(Abs_Acc1,[],2);
%         Here some calculations      
    else   if contains (tline1,'PSC')        
        PSC1 = double(cell2mat(textscan(tline1,'PSC=%u16',7,'Delimiter','(,)')));
%         Here some calculations 
           
    end 
    end
    end
    end
fclose(fid1);