Re: exporting matrix to txt

[Andy Buckle]

On Fri, Jun 18, 2010 at 1:51 PM, Erika Bueno <address@hidden> wrote:
> Hello, guys!
>
> You've already explained me how I can work with matrices. Now I can
> read an image and store it like a matrix.
>
> Is there a way to export this matrix as a TXT file like this: line,
> column and the value inside the cell?
>
> Thanks!
>
> Erika

-----------------file: save_var_coords.m --------------------
function save_var_coords(filename,matrix2d)
        % TODO: check input is 2D matrix
        fid=fopen(filename,'w'); % TODO: check for io errors
        for r=1:rows(matrix2d)
                for c=1:columns(matrix2d)
                        fprintf(fid,'row: %i  col: %i  val:%.4f 
\r\n',r,c,matrix2d(r,c))
                end
        end
        fclose(fid);
end
----------------------------------------------------------
>a=[1 2;3 4];
>save_var_coords('a.txt', a)
>system("type a.txt");
row: 1  col: 1  val:1.0000
row: 1  col: 2  val:2.0000
row: 2  col: 1  val:3.0000
row: 2  col: 2  val:4.0000

I assume you are on windows. You may want '\n' rather than '\r\n'
depending on what apps will read the file.


-- 
/* andy buckle */