Can I dynamically change a structure name
7 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
I have a function which takes in multiple .mat files, reads part of them and consolidates them into a cell array.
Currently my code looks like this:
myData = cell(numel(files),numel(headers)); %preallocate
for i=1:numel(files) %loop through the total number of files
currPath = [filepath files{i}]; %get the current file path
load(currPath);
myData(i,:) = (varName).database(headers) %grab the data
end
In this code, headers are indices of the columns I need data from. The issue lies in the myData(i,:) = ... line where I need to dynamically change (varName). I originally had it hard coded in because I thought the .mat files had consistent file names for the structure array I'm trying to read from, but it turns out that each folder has a different variable name consistent with the name of the folder.
I tried:
%find what the variable name is
varName = strtok(folderName,'_');
But the issue I'm running into is that (varName) doesn't work to substitute in a variable name the same way it works when substituting for a field name when accessing a structure. While I'm able to find the correct imported variable name and store it as a string, it doesn't let me use it as a variable.
I've also tried:
eval(sprintf('%s', varName));
But it just turns out I have no idea how to use eval().
Is there any workaround? I hope I don't have to use a list of try/catch statements...
1 commentaire
Réponse acceptée
Adam
le 26 Mai 2016
Use the version of load with an output argument - i.e.
loadedStruct = load( currPath );
Then you will get the contents of your file as fields of a struct and you can use dynamic strings for the field name then:
myData(i,:) = loadedStruct.(varName).database(headers)
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Characters and Strings 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!