How to build a .dat file with a cell variable

There is a picture in my textbook

Since this,I try to create a same .dat file for experiement.

>> m={'x2.3y4.56','x7.7y11.11','x12.5y5.5'};
>> save('file.dat','m')
>> type file.dat

MATLAB 5.0 MAT-file, Platform: PCWIN64, Created on: Sat Jul 08 11:19:36 2017

As you see,the type will give a wrong result.So I try

save('file.dat','m','-ascii')
Well,this time I will get some wrong information.How to create that *.dat* file?

[倪清策 倪]

[R,P]=corrcoef(test);

R=[2.41;2.05;2.34;1.48;1.39];

P=[0.34;0,5;0.42;0.43;0.42];

Answer 1

[Image Analyst]

Use fprintf():

m = {'x2.3y4.56', 'x7.7y11.11', 'x12.5y5.5'};
fid = fopen('file.dat', 'wt');
for k = 1 : length(m)
  fprintf('%s\n', m{k});
end
fclose(fid);
type file.dat

[Yode]

That work for you?When I run

type file.dat

I get a empty output..

[Walter Roberson]

m = {'x2.3y4.56', 'x7.7y11.11', 'x12.5y5.5'};
fid = fopen('file.dat', 'wt');
for k = 1 : length(m)
  fprintf(fid, '%s\n', m{k});
end
fclose(fid);
type file.dat

[Image Analyst]

Sorry, I was testing it in the command window first and forgot to put the "fid," in the fprintf() when I posted it. Walter corrected it.

[Yode]

@Walter Roberson I know the "t" in 'wt' can be omit here?

[Image Analyst]

Try it and see if you like/accept any differences.

[Walter Roberson]

The difference between 'w' and 'wt' is that on MS Windows systems, if you use 'wt' then any time that you send a newline (char(10), format code '\n') to the file, the I/O subsystem will automatically write carriage return (char(13), format code '\r') before the newline. This provides backwards compatibility with NotePad and other old programs that expect CR/NL pairs at the end of lines.

On Linux and OS-X, 'w' and 'wt' do the same thing, which is to say that they send only newline without carriage return.

[Jan]

In addition to the line break conversion, the output in text mode considers char(8) or sprintf('\b') as backsapce and removes the former character. The EOF-Escape sequence can stop the reading of the file also, even if more characters are following. In consequence the number of written characters must not equal the number of characters to write.