i've got a file with ext .xy that i want to read, cant attached it here as it is not supported here. it looks liek that:
7004825,RMS:30.78,No:1082.
20.00000000,2.60350425E-02
25.00000000,4.05571833E-02
30.00000000,5.82764596E-02
35.00000000,7.92009458E-02
40.00000000,1.03343524E-01
45.00000000,1.30721480E-01
50.00000000,1.61356464E-01
55.00000000,1.61643982E-01
60.00000000,1.61960006E-01
65.00000000,1.62304759E-01
after that there is a one empty line and it repeats with diffrent numbers.
i want to read 1st line with info and then read 2 columns.
how do i do that? ive tried using this:
fid = fopen(file);
Unrecognized function or variable 'random_x'.
C = textscan(fid, '%s %s %s %d %d', 'HeaderLines',1,'Delimiter',',','EmptyValue',0);
fclose(fid);
Hz = C{4};
disp(Hz)
y = C{5};
disp(y)
but it will read the 1st line with columns and i dont want that.
i need to work with .xy files, but for help i manually converted it and attached.

 Réponse acceptée

Chunru
Chunru le 26 Juil 2022
Modifié(e) : Chunru le 26 Juil 2022

0 votes

file='random_x.txt';
fid = fopen(file, 'rt');
i=1;
s1 = '';
while ~feof(fid)
s{i} = [s1 fgetl(fid)]; % 1st line
[xy{i}, n] = fscanf(fid, '%f, %f', inf); % xy
if mod(n, 2)==1
s1 = [num2str(xy{i}(end)) ','];
end
xy{i} = reshape(xy{i}(1:floor(n/2)*2), 2, []);
i = i+1;
end
fclose(fid);
s
s = 1×4 cell array
{'7004825,RMS:30.78,No:1082.'} {'17197987,RMS:81.89,No:916.7'} {'4104402,RMS:42.36,No:799.4'} {'1118378,RMS:51.75,No:554.2'}
xy
xy = 1×4 cell array
{2×825 double} {2×825 double} {2×796 double} {2×796 double}

5 commentaires

Mateusz Kiersnowski
Mateusz Kiersnowski le 26 Juil 2022
it does nto solve a problem, as u can look it up in the file, the x coordinate -> 1st col is going to ~2200 and then there is another data set that has to be read too.
Chunru
Chunru le 26 Juil 2022
Modifié(e) : Chunru le 26 Juil 2022
See the update.
Mateusz Kiersnowski
Mateusz Kiersnowski le 26 Juil 2022
its close, the last thing is that in s array after 1st iteration there is no number in the begining but it shoulh be there.
Chunru
Chunru le 26 Juil 2022
See updated.
Mateusz Kiersnowski
Mateusz Kiersnowski le 27 Juil 2022
thanks!

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