Add a useful package (from Source forge) for octave

[CreaPhase.git] / octave_packages / statistics-1.1.3 / casewrite.m

diff --git a/octave_packages/statistics-1.1.3/casewrite.m b/octave_packages/statistics-1.1.3/casewrite.m
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+## Copyright (C) 2008 Bill Denney <bill@denney.ws>
+##
+## This program 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.
+##
+## This program 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
+## this program; if not, see <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {} casewrite (@var{strmat}, @var{filename})
+## Write case names to an ascii file.
+##
+## Essentially, this writes all lines from @var{strmat} to
+## @var{filename} (after deblanking them).
+## @seealso{caseread, tblread, tblwrite, csv2cell, cell2csv, fopen}
+## @end deftypefn
+
+## Author: Bill Denney <bill@denney.ws>
+## Description: Write strings from a file
+
+function names = casewrite (s="", f="")
+
+  ## Check arguments
+  if nargin != 2
+    print_usage ();
+  endif
+  if isempty (f)
+    ## FIXME: open a file dialog box in this case when a file dialog box
+    ## becomes available
+    error ("casewrite: filename must be given")
+  endif
+  if isempty (s)
+    error ("casewrite: strmat must be given")
+  elseif ! ischar (s)
+    error ("casewrite: strmat must be a character matrix")
+  elseif ndims (s) != 2
+    error ("casewrite: strmat must be two dimensional")
+  endif
+
+  [fid msg] = fopen (f, "wt");
+  if fid < 0 || (! isempty (msg))
+    error ("casewrite: cannot open %s for writing: %s", f, msg);
+  endif
+
+  for i = 1:rows (s)
+    status = fputs (fid, sprintf ("%s\n", deblank (s(i,:))));
+  endfor
+  if (fclose (fid) < 0)
+    error ("casewrite: error closing f")
+  endif
+
+endfunction
+
+## Tests
+%!shared s
+%! s = ["a  ";"bcd";"ef "];
+%!test
+%! casewrite (s, "casewrite.dat")
+%! assert(caseread ("casewrite.dat"), s);