Use of num2str to name xml-files in a loop

Hello,

I'm using a code to write xml-files for some data. The code is:

fid = fopen('file.xml', 'w');
if fid == -1; error('Cannot open file for writing'); end
fprintf(fid, 'Hello ');
fprintf(fid, '%g, ', x(1:end-1));
fprintf(fid, '%g',   x(end));
fprintf(fid, ' This is the data.');
fclose(fid);

Since I need to write more than one xml-file, I would like to do it with a loop. My problem is that I need to name each file, e.g. file1.xml, file2.xml and so on. I have tried to do this with a num2str command in a loop, but I can't get it to work. Is there anyone out there who can help me with this problem?

Hope to hear from someone.

//Martin.

Answer 1

[Walter Roberson]

http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F

Answer 2

[Martin]

I have looked at that link and tried to implement it (I don't know much about data ex- and import). I then write;

for k=1:3

textFilename = ['file' num2str(k) '.xml']
fid = fopen(textFilename, 'rt');
fprintf(fid, 'Hello ');
fprintf(fid, '%g, ', x(1:end-1));
fprintf(fid, '%g',   x(end));
fprintf(fid, ' This is the data.');
fclose(fid);

end

This doesn't work - there's an error using fprintf. It's crucial that I can write the text in the files. Anyone who has a way to do it?

//Martin.

[Walter Roberson]

You would probably have more success if you opened the file for writing rather than reading.

[Martin]

Hehe, I guess you're right. As I said, I'm new to ex- and import - and apparently also an idiot ;)

Thank you for the help.