CODEWITHSUNDEEP
matlabmatrix
yosra
yosra

Reputation: 65

How to create a file .txt from a matrix?

I have a matrix x_training (size: 1000*2304) and another matrix y_training (size 1000*1) that contains labels of each instance in x_training. My goal is to create a file .txt that contain labels and x_training. Here is a little example for simplification :

x_training=[0.2 0.3
         0.5 0.4
         0.5 0.9]
y_training=[1
           2
           3]

so, the file.txt will contain :

   1  0.2 0.3
   2  0.5 0.4
   3  0.5 0.9

How can I do it?

Upvotes: 2

Views: 226

Answers (4)

Muhammad Usman Saleem
Muhammad Usman Saleem

Reputation: 149

FINAL EDIT

You can create a matrix data of which the first column is of y_training and 2:end ,columns are x_training?

Please try and tell me if not working

data=[y_training x_training(:,1:2304)] %based on your matrix
fId = fopen( 'your file.txt', 'w' ) ;
 fprintf( fId, '%i %2.1f %2.1f \r\n', data(:) ) ; % update this line
 fclose( fId ) ;

As i have not your matrixes that why here is the demo of testing this code

    x_training=rand(1000,2304); % creating randomly 1000*2304 matrix as x_training
y_training=rand(1000,1); % creating randomly 1000*1 matrix as y_training
test=[y_training x_training(:,1:end)];
data=test;
fId = fopen( 'your file.txt', 'w' ) ;
 fprintf( fId, '%i %2.1f %2.1f \r\n', data(:) ) ;
 fclose( fId ) ;

Alternate method:

if above code not give desire output, update this

data=[y_training x_training(:,1:2304)] %based on your matrix
dlmwrite('myFile.txt', data);

Check it and tell me which one is fine code.

Upvotes: 1

Novice_Developer
Novice_Developer

Reputation: 1492

Here is an alternative method 

dlmwrite('testtext2.txt',['x_training  y_training'] ,'delimiter','') 
A(:,1) = y_training
A(:,2:3) = x_training
dlmwrite('testtext2.txt',[A],'-append','delimiter','\t','roffset',1)

Upvotes: 1

Failed Scientist
Failed Scientist

Reputation: 2027

Its simple. Create a file (lets say OutPutFile.txt) in your MATLAB Current folder and run this script:

A = [y_training x_training];
B = A';

fileID = fopen('OutPutFile.txt','w');
fprintf(fileID, '%i %2.1f %2.1f \n',B);
fclose(fileID);

If you want to make a Tab-separated Values (TSV) file (which is openable in Excel), then modify the 2nd line to:

fprintf(fileID, '%i \t %2.1f \t %2.1f \n', B);

Upvotes: 3

OsJoe
OsJoe

Reputation: 259

x_training=[0.2 0.3; 0.5 0.4; 0.5 0.9]; % X
y_training=([1 2 3])';                  % Y - transposed       

data = [y_training,x_training];         % x and y concatenated
data = table(data);                     % data converted to table
writetable(data, 'file.txt');           % data saved as file.txt

Upvotes: 3

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