loading multiple csv files using readmatrix
21 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
julian gaviria
am 19 Okt. 2023
Bearbeitet: Stephen23
am 19 Okt. 2023
How can I load to matlab workspace multiple matrices with the same dimension located in individual csv files? They have different file names with the same extension (.csv)
Expected variable in workspace: A 3D matrix.
I have tried something like
Folder = 'C:\My\Folder';';
for k = 1 :100
filename = fullfile(Folder, sprintf('%d.csv', k));
data = readmatrix(filename);
...
end
3 Kommentare
Dyuman Joshi
am 19 Okt. 2023
@julian gaviria, Does the folder containing the csv files have any other files than the ones to be read?
Akzeptierte Antwort
Stephen23
am 19 Okt. 2023
Use DIR:
P = 'C:\My\Folder';
S = dir(fullfile(P,'*.csv'));
for k = 1:numel(S)
F = fullfile(P,S(k).name);
S(k).data = readmatrix(F);
end
All of the imported file data are stored in the structure S. For example, the 2nd file:
S(2).name % filename
S(2).data % file data
2 Kommentare
Stephen23
am 19 Okt. 2023
Bearbeitet: Stephen23
am 19 Okt. 2023
"How can I arrange all the content of "S(2).data" in a 3D array? "
A = cat(3,S.data)
But note that the order of the files will be that returned by DIR, which might not be the order you expect. If you require the filenames in alpha-numerical order then you will have to sort S yourself, e.g. by downloading NATSORTFILES:
S = dir(..);
S = natsortfiles(S);
... etc
Weitere Antworten (1)
Sulaymon Eshkabilov
am 19 Okt. 2023
Here is how you can create such a code:
Folder = 'C:\Users\...';
F_Pat = fullfile(Folder, '*.csv');
FILES = dir(F_Pat);
F_Names={FILES.name};
for k = 1 :length(F_Names)
Get_FName = FILES(k).name;
F_FileName=fullfile(FILES(k).folder, Get_FName);
data{k}= readmatrix(F_FileName);
...
end
All the best
1 Kommentar
Sulaymon Eshkabilov
am 19 Okt. 2023
My proposed code works for any file names not necessary file names should be sequential. All collected data in a cell array that can be also altered to store read data as a structure or stacked data of arrays, etc.
Siehe auch
Kategorien
Mehr zu Text Files finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!