how to compare two files line by line?
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Zineb EL MORCHID
am 12 Mär. 2016
Kommentiert: Adam Danz
am 20 Nov. 2021
I want to compare two files line by line and count how many lines they have in common , I tried the code below , but it doesn't work , somehow MATLAB stops working , ">>" just disappear
f = fopen('nv.txt','at');
fid = fopen('test.txt');
k = 0;
while ~feof(fid)
s1 = fgetl(fid);
if ~isempty(s1)
while ~feof(f)
s2 = fgetl(f);
if ~isempty(s2)
if(strcmp(s1,s2))
k = k+1;
end
end
end
end
end
fclose(fid);
fclose(f);
disp(k);
1 Kommentar
Image Analyst
am 12 Mär. 2016
If the second line is missing in one of the files, (and the rest of the lines are just moved up one) then do you say that from line 2 on they are all different?
What if the lines are all there but in some different order?
Akzeptierte Antwort
MHN
am 12 Mär. 2016
Bearbeitet: MHN
am 12 Mär. 2016
f = fopen('nv.txt');
fid = fopen('test.txt');
k = 0;
while ~feof(fid)
s1 = fgetl(fid);
frewind(f) % start from the first line of the second file
if ~isempty(s1)
while ~feof(f)
s2 = fgetl(f);
if ~isempty(s2)
if(strcmp(s1,s2))
k = k+1;
end
end
end
end
end
fclose(fid);
fclose(f);
disp(k);
3 Kommentare
MHN
am 12 Mär. 2016
Please use the "accepted answer" button. Are you sure? I run the program line by line and it compares every lines include the first one.
Weitere Antworten (2)
r r
am 11 Mai 2021
I have two files with similar data and I want to extract them into a file, and I also want to print the same line for the same data in the two files
Please help me
F1 = fopen('E.txt');
T1 = textscan(F1,'%s', 'delimiter', '\n');
fclose(F1);
F2 = fopen('G.txt');
tt2 = textscan(F2,'%s', 'delimiter', '\n');
fclose(F2);
T1s = char(T1{:});
T2s = char(T2{:});
[C,ix,ic] = intersect(T1s,T2s,'rows')
%%%%%%%%%%%%%%%%%%out Fiel :::
dlmwrite('R.txt',C,'%.6f');
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