Can I dynamically change a structure name

Question

TastyPastry 2016-5-26

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/286009-can-i-dynamically-change-a-structure-name

编辑： Stephen23 2016-5-27

采纳的回答： Adam

在 MATLAB Online 中打开

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...