Copyfile/ movefile when filenames are not directly available

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Afzal Mohammed 2020-3-28

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评论： Afzal Mohammed 2020-3-29

Hello Everyone,

I have two .xlsx files in a folder, I want to copy/ move those .xlsx files to a different folder but the user is not aware of file names which are stored in a workspace variable of the same Matlab program.

As shown below: 'flagged' is a workspace variable of my program which has file names. I want to copy/ move those specific files to a separate folder.

I tried following but it's not working

copyfile flagged(i).name newFolder

Please advise.

Thanks!

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Afzal Mohammed 2020-3-29

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Following lines helped.

mkdir('newFolder');
copyfile(flagged{i}, './newFolder');

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Answer 1

Peng Li 2020-3-28

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flagged is a cell so you couldn’t access it using parentheses and dot motion.

flagged{i} is your ith element in flagged. For example flagged{1} will be myFile.xlsx. If you want to move it somewhere you may also need the full directory as well unless it’s in the current directory.

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Afzal Mohammed 2020-3-29

Peng Li, appreciate your tips, thanks.

Peng Li 2020-3-29

If you need to create a folder called newFolder, use mkdir('newFolder'); first to create a folder named newFolder at the current directory.

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Answer 2

Walter Roberson 2020-3-28

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Assuming that newFolder is the name of a variable that stores the destination folder name:

copyfile(flagged(i).name, newFolder)

However I would recommend that you should be using fullfile() and should be using exist() to test to be sure that the file exists before you attempt to copy it.

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Afzal Mohammed 2020-3-29

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Walter, thanks for your response.

'newFolder' is not a variable, I was trying to create a separate folder in the same directory called 'newFolder' to copy/ move the flagged files.

Here is my program:

clc;
clear all
files = dir('*.xlsx'); 
for i = 1:length(files)
     data{i} = xlsread(files(i).name);
     max_val{i} = max(data {i}(:));
     min_val{i} = min(data {i}(:));
     diff_val{i}=  max_val{i}-min_val{i};
   if max_val{i} >= 100 || diff_val{i} >=35
        flagged{i}= files(i).name;  
        newFolder {i}  = flagged{i}
    end 
end

Here are my variables:

Flagged variable has some file names:

There are bunch of .xlsx files in the directory but I want to move only particular .xlsx files (names of particular files are in the 'flagged' variable) to a separate new folder in the same directory

Is there anyway I can read the file names from 'flagged' variable, copy those files from the directory and paste/move in a separate folder?

I tried what you suggested, it's giving an error.

copyfile(flagged{i}, newFolder)

Afzal Mohammed 2020-3-29

编辑：Afzal Mohammed 2020-3-29

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Walter,

ohh my bad, I apologize for creating the confusion, I was trying something and forgot to delete the last line. I know the last line from my code as shown below doesn't make any sense.

newFolder {i} = flagged{i}

Afzal Mohammed 2020-3-29