Error using ls - no such file or directory

6 次查看（过去 30 天）
Suad Vejselovski
Suad Vejselovski 2022-3-11
编辑： Stephen23 2022-4-26
Im trying to run a script i recived from my Professor. Hi showed me how to lunch it. He runs matlab on windows. I have a mac M1 with BigSur.
He told me just to add in the line of the "path" and the line of "pathres" my folder path to the file i want to examine with the script and the path where i want to save the results.
This is the beginnin of the script.
clear
close all
path = '/Users/suadvejselovski/Docu/MATLAB/Matlab_work/Dafare';
pathres = '/Users/suadvejselovski/Docu/MATLAB/Matlab_work/AnalizzatiSuad';
filelist = ls ([path '*.csv']);
analized_rawdata = {};
analized_data = {};
this is the error:
Error using ls (line 47)
ls: /Users/suadvejselovski/Docu/MATLAB/Matlab_work/Dafare*.csv: No such file or directory
Error in lookDataSegments (line 6)
filelist = ls ([path '*.csv']);
  1 个评论
Stephen23
Stephen23 2022-3-12
编辑：Stephen23 2022-4-26
Do NOT just add slashes yourself!
The correct approach is to use FULLFILE, which will automatically use the correct file separator character for your OS:
https://www.mathworks.com/matlabcentral/answers/1669694-error-using-ls-no-such-file-or-directory#answer_915749
Using the output from DIR is generally easier than using the output from LS.

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回答（2 个）

Image Analyst
Image Analyst 2022-3-11
Use fullfile() and do NOT use path as the name of your variable:
folder = '/Users/suadvejselovski/Docu/MATLAB/Matlab_work/Dafare';
if ~isfolder(folder)
errorMessage = sprintf('Error: folder does not exist:\n%s', folder);
uiwait(errordlg(errorMessage));
return;
end
filePattern = fullfile(folder, '*.csv')'
filelist = ls(filePattern);
Cris LaPierre
Cris LaPierre 2022-3-11
Add one more forward slash to terminate your variable path
path = '/Users/suadvejselovski/Docu/MATLAB/Matlab_work/Dafare/';
% ^ added here
filelist = ls ([path '*.csv']);
  2 个评论
Suad Vejselovski
Suad Vejselovski 2022-3-11
thanks the error is solved but i have a new error now:
>> lookDataSegments
Error using importdata (line 139)
Unable to open file.
Error in lookDataSegments (line 17)
data = importdata([path filename]);
what i have to do ?
Cris LaPierre
Cris LaPierre 2022-3-11
编辑：Cris LaPierre 2022-3-11
Can you open the file in MATLAB manually? If so, inspect the result of your concatenation:
[path filename]
Is it correct?
Also +1 to image analyst's comment to use fullfile instead.

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