--- /dev/null
+## Copyright (C) 2002-2012 Paul Kienzle
+##
+## This file is part of Octave.
+##
+## Octave is free software; you can redistribute it and/or modify it
+## under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 3 of the License, or (at
+## your option) any later version.
+##
+## Octave is distributed in the hope that it will be useful, but
+## WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+## General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with Octave; see the file COPYING. If not, see
+## <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {} dlmwrite (@var{file}, @var{M})
+## @deftypefnx {Function File} {} dlmwrite (@var{file}, @var{M}, @var{delim}, @var{r}, @var{c})
+## @deftypefnx {Function File} {} dlmwrite (@var{file}, @var{M}, @var{key}, @var{val} @dots{})
+## @deftypefnx {Function File} {} dlmwrite (@var{file}, @var{M}, "-append", @dots{})
+## @deftypefnx {Function File} {} dlmwrite (@var{fid}, @dots{})
+## Write the matrix @var{M} to the named file using delimiters.
+##
+## @var{file} should be a file name or writable file ID given by @code{fopen}.
+##
+## The parameter @var{delim} specifies the delimiter to use to separate
+## values on a row.
+##
+## The value of @var{r} specifies the number of delimiter-only lines to
+## add to the start of the file.
+##
+## The value of @var{c} specifies the number of delimiters to prepend to
+## each line of data.
+##
+## If the argument @code{"-append"} is given, append to the end of
+## @var{file}.
+##
+## In addition, the following keyword value pairs may appear at the end
+## of the argument list:
+##
+## @table @asis
+## @item "append"
+## Either @samp{"on"} or @samp{"off"}. See @samp{"-append"} above.
+##
+## @item "delimiter"
+## See @var{delim} above.
+##
+## @item "newline"
+## The character(s) to use to separate each row. Three special cases
+## exist for this option. @samp{"unix"} is changed into "\n",
+## @samp{"pc"} is changed into "\r\n", and @samp{"mac"} is changed
+## into "\r". Other values for this option are kept as is.
+##
+## @item "roffset"
+## See @var{r} above.
+##
+## @item "coffset"
+## See @var{c} above.
+##
+## @item "precision"
+## The precision to use when writing the file. It can either be a
+## format string (as used by fprintf) or a number of significant digits.
+## @end table
+##
+## @example
+## dlmwrite ("file.csv", reshape (1:16, 4, 4));
+## @end example
+##
+## @example
+## dlmwrite ("file.tex", a, "delimiter", "&", "newline", "\\n")
+## @end example
+##
+## @seealso{dlmread, csvread, csvwrite}
+## @end deftypefn
+
+## Author: Paul Kienzle <pkienzle@users.sf.net>
+##
+## This program was originally granted to the public domain
+##
+## 2002-03-08 Paul Kienzle <pkienzle@users.sf.net>
+## * Initial revision
+## 2005-11-27 Bill Denney <bill@givebillmoney.com>
+## * Significant modifications of the input arguments for additional
+## functionality.
+
+function dlmwrite (file, M, varargin)
+
+ if (nargin < 2)
+ print_usage ();
+ endif
+
+ ## set defaults
+ delim = ",";
+ r = c = 0;
+ newline = "\n";
+ if (ischar (M))
+ precision = "%c";
+ else
+ precision = "%.16g";
+ endif
+ opentype = "wt";
+
+ ## process the input arguments
+ i = 0;
+ while (i < length (varargin))
+ i++;
+ if (strcmpi (varargin{i}, "delimiter"))
+ delim = varargin{++i};
+ elseif (strcmpi (varargin{i}, "newline"))
+ newline = varargin{++i};
+ if (strcmpi (newline, "unix"))
+ newline = "\n";
+ elseif (strcmpi (newline, "pc"))
+ newline = "\r\n";
+ elseif (strcmpi (newline, "mac"))
+ newline = "\r";
+ endif
+ elseif (strcmpi (varargin{i}, "roffset"))
+ r = varargin{++i};
+ elseif (strcmpi (varargin{i}, "coffset"))
+ c = varargin{++i};
+ elseif (strcmpi (varargin{i}, "precision"))
+ precision = varargin{++i};
+ if (! strcmpi (class (precision), "char"))
+ precision = sprintf ("%%.%gg", precision);
+ endif
+ elseif (strcmpi (varargin{i}, "-append"))
+ opentype = "at";
+ elseif (strcmpi (varargin{i}, "append"))
+ i++;
+ if (strcmpi (varargin{i}, "on"))
+ opentype = "at";
+ elseif (strcmpi (varargin{i}, "off"))
+ opentype = "wt";
+ else
+ error ('dlmwrite: append must be "on" or "off"');
+ endif
+ else
+ if (i == 1)
+ delim = varargin{i};
+ elseif (i == 2)
+ r = varargin{i};
+ elseif (i == 3)
+ c = varargin{i};
+ else
+ print_usage();
+ endif
+ endif
+ endwhile
+
+ if (ischar (file))
+ [fid, msg] = fopen (file, opentype);
+ elseif (isscalar (file) && isnumeric (file))
+ [fid, msg] = deal (file, "invalid file number");
+ else
+ error ("dlmwrite: FILE must be a filename string or numeric FID");
+ endif
+
+ if (fid < 0)
+ error (["dlmwrite: " msg]);
+ else
+ if (r > 0)
+ fprintf (fid, "%s",
+ repmat ([repmat(delim, 1, c + columns(M)-1), newline], 1, r));
+ endif
+ if (iscomplex (M))
+ cprecision = regexprep (precision, '^%([-\d.])', '%+$1');
+ template = [precision, cprecision, "i", ...
+ repmat([delim, precision, cprecision, "i"], 1, ...
+ columns(M) - 1), newline ];
+ else
+ template = [precision, repmat([delim, precision], 1, columns(M)-1),...
+ newline];
+ endif
+ if (c > 0)
+ template = [repmat(delim, 1, c), template];
+ endif
+ if (iscomplex (M))
+ M = M.';
+ b = zeros (2*rows(M), columns (M));
+ b(1: 2 : end, :) = real (M);
+ b(2: 2 : end, :) = imag (M);
+ fprintf (fid, template, b);
+ else
+ fprintf (fid, template, M.');
+ endif
+ if (! isscalar (file))
+ fclose (fid);
+ endif
+ endif
+
+endfunction
+
+
+%!test
+%! f = tmpnam ();
+%! dlmwrite (f,[1,2;3,4],'precision','%5.2f','newline','unix','roffset',1,'coffset',1);
+%! fid = fopen (f,"rt");
+%! f1 = char (fread (fid,Inf,'char')');
+%! fclose (fid);
+%! dlmwrite (f,[5,6],'precision','%5.2f','newline','unix','coffset',1,'delimiter',',','-append');
+%! fid = fopen (f,"rt");
+%! f2 = char (fread (fid,Inf,'char')');
+%! fclose (fid);
+%! unlink (f);
+%!
+%! assert (f1,",,\n, 1.00, 2.00\n, 3.00, 4.00\n");
+%! assert (f2,",,\n, 1.00, 2.00\n, 3.00, 4.00\n, 5.00, 6.00\n");
+
git://git.creatis.insa-lyon.fr / CreaPhase.git / blobdiff