FilePath including a variable

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Manuel Lauber 2020-11-8

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https://ww2.mathworks.cn/matlabcentral/answers/640900-filepath-including-a-variable

编辑： Stephen23 2020-11-9

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Hey,

i have a problem importing several sheets into MatLab Workspace.

names is a String Array including different file names. I get an Error when i try to include the varibale as part of the file Directory:

May someone help :)

files = dir('.......');
names = {files.name}; 
for k=1:numel(names)
  k = readtable("C:\Users\Desktop\Test\*(names{k})*.txt", opts);
end

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Mario Malic 2020-11-8

编辑：Mario Malic 2020-11-8

Are you trying to open sheets from one folder that have the same name in another?

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回答（1 个）

dpb 2020-11-8

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编辑：dpb 2020-11-9

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Variables are variables, not text.

rootdir="C:\Users\Desktop\Test\";     % use variable so can change easily
filespec="*.txt";                     % ditto for a file pattern
d=dir(fullfile(rootdir,filespec));    % use fullfile() to put pieces together
for i=1:numel(d)
  t=readtable(fullfile(rootdir,d(i).name), opts);
end

ADDENDUM:

Above reads each in turn; process each before going on or catenate if same variables and makes sense or at worst, use cell array to store into and retrieve from.

readtable("C:\Users\Desktop\Test\*(names{k})*.txt", opts);

above, you've included the variable name names as literal text so it isn't recognized as a variable by the parser.