--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/m-toolbox/classes/@pz/char.m	Wed Nov 23 19:22:13 2011 +0100
@@ -0,0 +1,26 @@
+% CHAR convert a pz object into a string.
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% DESCRIPTION: CHAR convert a pz object into a string.
+%
+% CALL:        string = char(obj)
+%
+% VERSION:     $Id: char.m,v 1.9 2011/02/18 16:48:54 ingo Exp $
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+function varargout = char(varargin)
+
+  objs = utils.helper.collect_objects(varargin(:), 'pz');
+
+  pstr = '';
+  for ii = 1:numel(objs)
+    pp   = objs(ii);
+    % f and Q
+    pstr = [pstr  sprintf('(f=%g Hz, Q=%g, ri=%s), ', pp.f, pp.q, mat2str(pp.ri(1), 4))];
+  end
+
+  %%% Prepare output
+  varargout{1} = pstr(1:end-2);
+end
+