Why textread in MATLAB error?

clear all
close all
listf=dir('E:\New folder (5)\data\*.txt');
n=length(listf);

for i=1:n
filename=listf(i).name;
data{i}=textread(filename);
end

fs=1000;
fcc=60;
fc=(((fcc*2*pi)/fs))/pi;
[b,a]=butter(4,fc,'low');
for i=1:n
fil{i}=filtfilt(b,a,data{i});
end

for i=1:n
   fil{i}(:,1)=data{i}(:,1); 
   [p(i),q(i)]=size(fil{i});
end

for j=1:n
 for i=10:p(j)-9
   if fil{j}(i,4)>=10 & fil{j}(i-9:i-1,4)<10 & fil{j}(i+1:i+9,4)>fil{j}(i,4)
       f1(j)=i;
   end
   
   if  fil{j}(i,4)<=10 & fil{j}(i-9:i-1,4)>10 & fil{j}(i-9:i-1,4)>=fil{j}(i,4)
       ff(j)=i-1;
   end 
   
 end
end

for i=1:n
   force{i}=fil{i}(f1(i)+1:ff(i),:); 
end



% for i=1:n
% xlswrite('data.xlsx',fil{i},i)
% end

[madhan ravi]

please select the code and press the code button so that it’s easy to read

[dpb]

Madhan's request is important but even more than that, attach the error message in context ...

Answer 1

[Jan]

I guess, that the path is missing when you open the files:

listf = dir('E:\New folder (5)\data\*.txt');
n     = length(listf);
for k = 1:n
   % File WITH full path:
   filename = fullfile(listf(k).folder, listf(k).name);
   data{k}  = textread(filename);
end

Without the full path, Matlab searchs in the current directory, but you obtauined the files in a specific folder explicitly in the dir() command.

Note: Do you see, how nice formatted code is? If you post the complete error message, there wouldn't be a need to guess what the problem is.

[EDITED] In Matlab versions before R2016b dir does not reply the field folder. Then:

folder = 'E:\New folder (5)\data\';
listf  = dir(fullfile(folder, '*.txt'));
...
    filename = fullfile(folder, listf(k).name);

[Walter Roberson]

note: older MATLAB do not record the folder information for dir(). At the moment I do not recall the first release that added it .

[Jan]

Thanks Walter. I've added some code for older Matlab versions.