How to save structure as .asc?

Hello. I have a structure that looks like this:

And i whant to save these information in a .asc file. In the end the file will look like this:

I tried with printf but without results. Can you help me? I'm novice in Matlab.

Thanks

[Rik]

fprintf is the command you're looking for. If you get an error, show the code you are using and the complete error message.

[knoppyx]

I tried:

fileID='blabla.asc';
          fileID = fopen(fileID,'w');
          fprintf(fileID,param.textdata,param.data);
          fclose(fileID);

But the error is: Error using fprintf Invalid format.

[Stephen23]

@knoppyx: You have not specified any format string. Read the fprintf help to know how to specify the format string.

Answer 1

[KSSV]

S{1} = 'IMC FAMOS' ;
S{2} = 'NAME: Wheelspeed_R_L' ;
S{3} = 'Time:  18/08/16 11:28:46' ;
S{4} = 'Length: 21456' ;
S{5} = 'unit X-Axis: 1 Samples' ;
S{6} = '1st x-Value: 0.0089 samples' ;
S{7} = 'unit Y-Axis: rpm' ;
data = rand(21456,2) ;  % some random data 

fid = fopen('myfile.asc','w') ;

for i = 1:length(S)
    fprintf(fid,'%s\n',S{i}) ;
end
fprintf(fid,'%s\n','Data:') ;
fprintf(fid,'%f %f\n',data) ;
fclose(fid) ;

[Jan]

Or without a loop:

fprintf(fid, '%s\n', S{:});

[knoppyx]

I tried:

fileID=fisiere(j).name;
          fileID = fopen(fileID,'w');
          fprintf(fileID,'%s\n',param.textdata{:});

And the result is:

I want to show me each line underneath. That's not what "\n" do?

[Rik]

Welcome in the world of end-of-line markers. In notepad you will need \r\n instead of \n to see a new line. If you would have opened it in e.g. Notepad++, you would have seen new lines. This is an oddity in Windows that is very old and will probably not change in the coming decade.

[Jan]

No editor I know besides Windows Notepad suffers from \n line breaks. Either use WordPad, Notepad++ or Matlab's editor, or use \r\n as mentioned by Rik already, if you really prefer the darn NotePad.

@Rik: Who knows - they have added the feature to copy&paste in the command shell, although this method is common for 30 years now.

[Stephen23]

Actually the only change that is required is to open the file in text mode. This will take care of the correct newline characters:

fid = fopen('myfile.asc','wt');
                           ^ use this to open in text mode!

[knoppyx]

Thank you, it works. But the "param.data" is not looking very good.

fileID=fisiere(4).name;
            fileID = fopen(fileID,'wt');
            fprintf(fileID,'%s\n',param.textdata{:});
            fprintf(fileID,'%s\n',param.data(:));
            fclose(fileID);

It looks like this:

And i want to look like this:

How can i change the code to obtain that result?

All i whant is that the first colum from param.data to be the firs colum from resulted file and the second colum from param.data to be the second colum from resulted file.

[Stephen23]

@knoppyx: one day ago I wrote that you should "Read the fprintf help to know how to specify the format string." Have you read the documentation to learn how to specify different format strings?

You will need to transpose the input matrix, and specify format that suits your needs. Something like this:

fprintf(fileID,'%.4f%11.4f\n',param.data.');

You need to read the fprintf documentation carefully, because there are lots of options for specifying the format string.

[knoppyx]

i've solved it, thank you. You were right, i've solved it with the help of transpose.