copyfile skips files?

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kova
kova 2020-4-18
编辑： dpb 2020-4-20
Hello everyone!
I want to create copies of specific files in a new directory. They are coming out of over 500 different subfolder, so I don't want to do it manually.
I have loaded and accessed data within all of them, so I know they exist. For some reason, not all files make it to the destination folder, but I'm not getting an error message. I also have plenty of space on my drive, so that can't be the problem either.
ddir = uigetdir;
AllFiles = dir(fullfile(ddir, '**', 'DT_data*mat'));
destination = 'C:\Users\XXXXX\Desktop\tempFigData';
for i = 1:length(AllFiles)
sourcefile = fullfile(AllFiles(i).folder, AllFiles(i).name);
copyfile(sourcefile, destination);
end
Does anyone have an idea what could be the problem here?
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kova
kova 2020-4-18
Thank you!
I'm sorry if I'm not giving the info you need, I'm very much a novice! ;-)
I will definitely start adding status messages to my scripts!
In this case however, it didn't return anything. Just to check, I tried it the other way round, without negating status, (which did return a message) and made it count for how many files this was the case. It counted 515 (the number I want), while the destination directory actually only contains 508 files.
I don't know, if this is what you meant, but dir() returns a struct with name and folder as char.
The filenames are automatically generated (they're output files from experiments), so in this case I know they don't contain any spaces. I can load the files using fullfile(), so I think that should be fine.
dpb
dpb 2020-4-19
Do a dir() on the target destination and compare to the AllFiles original.
dDest=dir(fullfile(destination, '**', 'DT_data*mat'));
SrcDestDiff=setdiff({AllFiles.name},{dDest.name})

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回答（1 个）

Image Analyst
Image Analyst 2020-4-19
Try this:
% Get top level folder.
ddir = uigetdir(pwd);
filePattern = fullfile(ddir, '**', 'DT_data*.mat');
AllFiles = dir(filePattern);
destination = 'C:\Users\XXXXX\Desktop\tempFigData';
if ~isfolder(destination)
mkdir(destination);
end
fprintf('Found %d files.\n', length(AllFiles));
if length(AllFiles) == 0
warningMessage = sprintf('Did not find any files matching %s', filePattern);
uiwait(errordlg(warningMessage));
return;
end
for i = 1:length(AllFiles)
sourceFileName = fullfile(AllFiles(i).folder, AllFiles(i).name);
destinationFileName = fullfile(destination, AllFiles(i).name);
fprintf('Copying file %s\n to %s\n', sourceFileName, destinationFileName);
% copyfile(sourceFileName, destination);
end
Now what do you see?
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dpb
dpb 2020-4-20
编辑：dpb 2020-4-20
He's already done that in response to my first Comment above, IA. Reported no errors, no messages for all 515.
<https://www.mathworks.com/matlabcentral/answers/518934-copyfile-skips-files#comment_830520>
dpb
dpb 2020-4-20
编辑：dpb 2020-4-20
Just for grins, @kova, how about attach (use the paperclip icon) a .mat file that contains the two dir() arrays above (AllFiles and dDest)? Make detailed probing easier if folks had local copies...

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