Changing the format of mat file
7 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Khan Muhammad Adeel Khan
le 15 Juil 2020
Commenté : Walter Roberson
le 15 Juil 2020
How to change the format of the mat file ? My data is in form of : epoch *data point *channel. I want to change the format as : channel* data point* epoch
0 commentaires
Réponse acceptée
Mohammad Sami
le 15 Juil 2020
If you have a 3D matrix, you can use the function permute to move the dimensions.
edc = rand([3 4 5]);
cde = permute(edc,[3 2 1]);
% this will make the 3rd dimension the first dimension and first dimension the third.
1 commentaire
Walter Roberson
le 15 Juil 2020
Note that this works on a variable. You had asked to convert a file; the framework I gave goes through the file and converts all of the variables in it and creates a new file with the result.
Plus de réponses (1)
Walter Roberson
le 15 Juil 2020
outdir = 'swapped'; %can be fully qualified
filename = 'YourFile.mat'; %can be fully qualified
if ~exist(outdir, 'dir'); mkdir(outdir); end
ds = load(filename);
fn = fieldnames(ds);
nf = length(fn);
all_3d = true;
for K = 1 : nf
thisfield = fn{k};
thisdata = ds.(thisfield);
if ndims(thisdata) ~= 3
fprintf('variable "%s" is not 3D, quitting!\n', thisfield);
all_3d = false;
break;
end
end
if all_3d
nf = struct();
for K = 1 : nf
thisfield = fn{k};
thisdata = ds.(thisfield);
newdata = permute(thisdata, [3 2 1]);
nf.(thisfield) = newdata;
end
[filedir, basename, ext] = fileparts(filename);
newname = fullfile(outdir, [basename ext]);
save(newname, '-struct'. 'nf')
end
0 commentaires
Voir également
Catégories
En savoir plus sur String Parsing dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!