Dynamically name a struct variable in MATLAB - matlab

Question

I have several files "2011-01-01.txt", "2013-01-02.txt", "2015-02-01.txt", etc.
I wish to create a struct variable for each of the file such that (the values are made up):
machine20110101.size=[1,2,3];
machine20110101.weight=2345;
machine20110101.price=3456;
machine20130102.size=[2,3,4];
machine20130102.weight=1357;
machine20130102.price=123;
machine20150201.size=[1,2,4];
machine20150201.weight=1357;
machine20150201.price=123;
And,
save('f20110101.mat','machine20110101');
save('f20130102.mat','machine20130102') ;
save('f20150201.mat','machine20150201');
As we can see, the struct names are derived from the files' names. How can I construct the above struct variables?
I've searched for a while, but I didn't figure out how to use genvarname.
And these links (dynamic variable names in matlab, dynamic variable declaration function matlab, Dynamically change variable name inside a loop in MATLAB) didn't solve my problem.
I'm using MATLAB R2012b, so functions like matlab.lang.makeUniqueStrings defined after this version is unavailable.

Answer 1

Now that I'm in front of MATLAB, here's an example based on my comment above, utilizing dynamic field names with the filenames pruned using fileparts and regexprep in a cellfun call.
% Sample list for testing here, use uigetdir with dir or whatever method to
% get a list of files generically
filelist = {'C:\mydata\2011-01-01.txt', ...
'C:\mydata\2012-02-02.txt', ...
'C:\mydata\2013-03-03.txt', ...
'C:\mydata\2014-04-04.txt', ...
};
nfiles = length(filelist);
% Get filenames from your list of files
[~, filenames] = cellfun(#fileparts, filelist, 'UniformOutput', false);
% Prune unwanted characters from each filename and concatenate with 'machine'
prunedfilenames = regexprep(filenames, '-', '');
myfieldnames = strcat('machine', prunedfilenames);
% Generate your structure
for ii = 1:nfiles
% Parse your files for the data, using dummy variables since I don't
% know how your data is structured
loadedsize = [1, 2, 3];
loadedweight = 1234;
loadedprice = 1234;
% Add data to struct array
mydata.(myfieldnames{ii}).size = loadedsize;
mydata.(myfieldnames{ii}).weight = loadedweight;
mydata.(myfieldnames{ii}).price = loadedprice;
end
#patrik raises some good points in the comments. I think the more generic method he would like to see (please correct me if I'm wrong) goes something like this:
% Sample list for testing here, use uigetdir with dir or whatever method to
% get a list of files generically
filelist = {'C:\mydata\2011-01-01.txt', ...
'C:\mydata\2012-02-02.txt', ...
'C:\mydata\2013-03-03.txt', ...
'C:\mydata\2014-04-04.txt', ...
};
nfiles = length(filelist);
% Get filenames from your list of files
[~, filenames] = cellfun(#fileparts, filelist, 'UniformOutput', false);
% Prune unwanted characters from each filename and concatenate with 'machine'
prunedfilenames = regexprep(filenames, '-', '');
mytags = strcat('machine', prunedfilenames);
% Preallocate your structure
mydata = repmat(struct('tag', '', 'size', [1, 1, 1], 'weight', 1, 'price', 1), nfiles, 1);
% Fill your structure
for ii = 1:nfiles
% Parse your files for the data, using dummy variables since I don't
% know how your data is structured
loadedsize = [1, 2, 3];
loadedweight = 1234;
loadedprice = 1234;
% Add data to struct array
mydata(ii).tag = mytags{ii};
mydata(ii).size = loadedsize;
mydata(ii).weight = loadedweight;
mydata(ii).price = loadedprice;
end

Answer 2

Besides #excaza's answer, I used the following approach:
machine.size = [1,2,3]; machine.price = 335; machine.weight = 234;
machineName = ['machine',the_date];
machineSet = struct(machineName,machine);
save(OutputFile,'-struct','machineSet',machineName);