How to extract data by looping through struct
6 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
Emu
el 13 de Sept. de 2022
Comentada: Emu
el 13 de Sept. de 2022
Hi - I have some data saved as .mat files and i am trying to load it in (think I have done this) and then loop through the data in the struct to plot it all on the same graph (to then plot the mean average also.) Here is my script that doesn't work:
S = dir(fullfile(outputDir,'*.mat'));
fields = fieldnames(S)
for k = 1:length(fields)
F = fullfile(outputDir,S(k).name);
S(k).data = load(F);
S.(fields{k});
%a = table2array(readtable(strcat(S(outputFolders).folder,'/', S(outputFolders).name)));
for j= 1:length(S.data);
%for i = 1:length(preSumTypesoutput)
plot([-6 -5 -4 -3 -2 -1], data(:,i)); hold on;
xticks([-6 -5 -4 -3 -2 -1])
ylim([0 10])
ylim([0 5])
title('Pre-arousal vocalisations')
end
end
and I attach some example data (I am trying to plot 6 of these).
0 comentarios
Respuesta aceptada
Walter Roberson
el 13 de Sept. de 2022
S = dir(fullfile(outputDir,'*.mat'));
S is the output of dir()
fields = fieldnames(S)
The field names returned by dir() include such items as 'name', 'folder', 'bytes', 'isdir' and so on.
for k = 1:length(fields)
You want to loop over the directory structure... unusual, but maybe there is a reason
F = fullfile(outputDir,S(k).name);
You are using the field name index for the directory structure, and using it to index the struct array returned by dir() . If you wanted to loop over the fields of S you would need to use something like
thisfield = {S.(fields{K})};
3 comentarios
Walter Roberson
el 13 de Sept. de 2022
S = dir(fullfile(outputDir,'*.mat'));
filenames = fullfile({S.folder}, {S.name});
num_files = length(filenames);
tiledlayout('flow');
for K = 1 : num_files
thisfile = filenames{K};
[~, basename, ~] = fileparts(thisfile);
datastruct = load(thisfile);
data = datastruct.preSumTypesoutput; %fixed field name!!
nexttile();
plot([-6 -5 -4 -3 -2 -1], data);
xticks([-6 -5 -4 -3 -2 -1])
ylim([0 10])
ylim([0 5])
title("Pre-arousal vocalisations for " + basename)
end
Más respuestas (1)
Ver también
Categorías
Más información sobre Environment and Settings en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!