write a matrix to a .txt file

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Usman Siddique
Usman Siddique on 16 Oct 2018
Commented: madhan ravi on 17 Oct 2018
Hello;
I am trying to write the data of two column vectors "G" and "O" into two separate .txt files named "inputs.txt" and "outputs.txt" respectively. However I am unable to do so. Both column vectors are of length 994*1. I open the .txt files but they appear empty.
Do I need to create the .txt files "inputs" and "outputs" in the same directory or will MATLAB create them automatically? The files should be updated with new data of "G" and "O" each time I run the program with the existing file data being erased.
Any help in this query will be highly appreciated.
Thanks
feild1=fopen('inputs.txt','w');
fprintf(fileid1,'%d \r\n',G);
type inputs.txt
fclose(fileid1);
fileid2=fopen('outputs.txt','w');
fprintf(fileid2,'%d \r\n',O);
type outputs.txt
fclose(fileid2);

Accepted Answer

madhan ravi
madhan ravi on 16 Oct 2018
Edited: madhan ravi on 16 Oct 2018
dlmwrite('inputs.txt',G) %easy and efficient, assuming datas are only double
dlmwrite('outputs.txt',O)
  3 Comments
Usman Siddique
Usman Siddique on 16 Oct 2018
Thanks, it works perfectly.
can you tell me when I open the file using the default windows notepad the files are unreadable and without spaces. However when I open them using Notepad++ the data appears to be readable.
madhan ravi
madhan ravi on 17 Oct 2018
Sorry I have no idea

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