--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/m-toolbox/classes/@ssm/ssm2miir.m	Wed Nov 23 19:22:13 2011 +0100
@@ -0,0 +1,137 @@
+% SSM2MIIR converts a statespace model object to a miir object
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% DESCRIPTION: SSM2MIIR converts a statespace model object to an miir object.
+%
+% CALL:
+%              >> filts = ssm2miir(ssm, pl);
+%
+% INPUT :
+%
+%           ssm     - a ssm object
+%           pl      - a plist with parameters 'inputs', 'states' and
+%                     'outputs' to indicate which inputs, states and output
+%                     variables are taken in account. This requires proper
+%                     variable naming. If a variable called appears more
+%                     that once it will be used once only.
+%
+% OUTPUT:
+%
+%            filts - an array of miir filter objects
+%
+% <a href="matlab:utils.helper.displayMethodInfo('ssm', 'ssm2miir')">Parameters Description</a>
+%
+% VERSION: $Id: ssm2miir.m,v 1.19 2011/04/08 08:56:23 hewitson Exp $
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+function varargout = ssm2miir(varargin)
+  
+  %% starting initial checks
+  % Check if this is a call for parameters
+  if utils.helper.isinfocall(varargin{:})
+    varargout{1} = getInfo(varargin{3});
+    return
+  end
+  
+  utils.helper.msg(utils.const.msg.MNAME, ['running ', mfilename]);
+  
+  % Collect input variable names
+  in_names = cell(size(varargin));
+  for ii = 1:nargin,in_names{ii} = inputname(ii);end
+  
+  % Collect all SSMs and plists
+  [sys, ssm_invars, rest] = utils.helper.collect_objects(varargin(:), 'ssm', in_names);
+  [pl, invars2, rest]  = utils.helper.collect_objects(rest(:), 'plist');
+  if ~isempty(rest)
+    pl = combine(pl, plist(rest{:}));
+  end
+  pl = combine(pl, getDefaultPlist);
+  
+  if numel(sys) ~= 1
+    error('### Input (only) one SSM object.');
+  end
+  
+  %% begin function body
+  % minimal Realization
+  sys.sMinReal();
+  
+  %% convert to double
+  % Convert to double arrays
+  [A,B,C,D,Ts,inputvarnames,ssvarnames,outputvarnames, inputunit, ssunit, outputunit] =...
+    double(sys, pl);
+  
+  Ninputs_out  = numel(inputvarnames);
+  Noutputs_out = numel(outputvarnames);
+  
+  if ~(Ts > 0)
+    error('ssm should be time-discrete, use ssm2rational instead')
+  end
+  
+  %% convert to miir
+  miir_out = miir.initObjectWithSize(Noutputs_out, Ninputs_out);
+  
+  for ii=1:Ninputs_out
+    for oo=1:Noutputs_out
+      
+      [a,b] = ss2tf(A,B(:,ii),C(oo,:),D(oo, ii ));
+      name = [ssm_invars{1},' : ',inputvarnames{ii},' -> ',outputvarnames{oo}];
+      pl = plist('inunits', inputunit(ii), 'ounits' ,outputunit(oo));
+      if b==0
+        m = miir(); % CASE TO DELETE???
+      else
+        data = plist('a', real(a), 'b', real(b),'fs', 1/sys.timestep);
+        m = miir(data.combine( pl));
+      end
+      m.addHistory(ssm.getInfo(mfilename), pl , ssm_invars, sys.hist );
+      m.name = name;
+      miir_out(oo, ii) = m;
+    end
+  end
+  if nargout == numel(miir_out)
+    for ii = 1:numel(miir_out)
+      varargout{ii} = miir_out(ii);
+    end
+  else
+    varargout{1} = miir_out;
+  end
+  
+end
+
+
+%--------------------------------------------------------------------------
+% Get Info Object
+%--------------------------------------------------------------------------
+function ii = getInfo(varargin)
+  
+  if nargin == 1 && strcmpi(varargin{1}, 'None')
+    sets = {};
+    pl   = [];
+  else
+    sets = {'Default'};
+    pl   = getDefaultPlist;
+  end
+  % Build info object
+  ii = minfo(mfilename, 'ssm', 'ltpda', utils.const.categories.converter, '$Id: ssm2miir.m,v 1.19 2011/04/08 08:56:23 hewitson Exp $', sets, pl);
+end
+
+%--------------------------------------------------------------------------
+% Get Default Plist
+%--------------------------------------------------------------------------
+function pl = getDefaultPlist()
+  pl = plist();
+  
+  p = param({'inputs', ['Specify the inputs. Give one of:<ul>'...
+    '<li>A cell-array of input port names.</li>'...
+    '<li>A cell-array of logical arrays specifying which input ports to use for each input block.</li>'...
+    '<li>A cell-array of double values specifying which input ports to use for each input block.<li>'...
+    '<li>The string ''ALL'' to use all inputs.']}, paramValue.STRING_VALUE('ALL'));
+  pl.append(p);
+  
+  p = param({'states', 'Specify the states. Specify the states as for the ''inputs'' parameter.'}, paramValue.STRING_VALUE('ALL'));
+  pl.append(p);
+  
+  p = param({'outputs', 'Specify the outputs. Specify the outputs as for the ''inputs'' parameter.'}, paramValue.STRING_VALUE('ALL'));
+  pl.append(p);
+end
+