Error in importData text

The problem in importing my data, my M file where i loop on files and calculate mean, i get an error message saying

   Error in Untitled2 at 10
       mydata{k} = importdata(myfilename, ' ' );

Caused by:
    Error using text scan
    Unable to read any data from the file, text scan may not have read access.

and i checked and found mydata{k} is empty...i have no idea and i really need help to run this m file ?

the code is followed

 close all
 clear all 
 clc

 numfiles = 10;
 mydata = cell(1, numfiles);
 values=[];
 for k = 1:numfiles
   myfilename = sprintf('tt%d.txt',k);
   mydata{k} = importdata(myfilename, ' ' );
   values{k} = mydata{k}(:,2);
   m= mean(values{k});
   fid=fopen('MeanOutputTT.txt','at');
   fprintf(fid, '%f', m');
   fprintf(fid, '\n');
   fclose(fid);
 end

[xin wang]

Nice to meet you, I'd like to ask whether you have solved your question. I've a similiar code like yours. And I want to know how to solve this question like error in import data, thank you very much!

clc
clear all
close all

% Assignments
zdimension = input('Number of .tif images? ');

Unable to run the 'fevalJSON' function because it calls the 'input' function, which is not supported for this product offering.

% Subvolume is the region in which 3D data will be cut around three-phase
% contact point
subvolume = input('Dimension of subvolume? ');
subvolume = subvolume/2;
mydata = cell(1, zdimension);
% Import .tif images in MATLAB
% !!If different number of figures, change %03d!!
for k = 1:zdimension
  myfilename = sprintf('CPline%03d.tif', k);
  mydata{k} = importdata(myfilename);
end

Answer 1

[Divyam]

Hi @yasmin khattab,

It appears that MATLAB does not have the read permissions for the file. Since the file exists on MATLAB path it can happen that some other program is performing some operations on the file or the file is open for read in a different location. To avoid this, close all instances of the programs that may read/perform operations the file.

If this does not resolve the error then you could try to use the "readtable" function for the purpose of reading the file data.

For more information regarding the "readtable" function, refer to this documentation: https://www.mathworks.com/help/matlab/ref/readtable.html