wolffd@0: function sMap=sompak_sammon(sMap,ft,cout,ct,rlen)
wolffd@0: 
wolffd@0: %SOMPAK_SAMMON Call SOM_PAK Sammon's mapping program from Matlab.
wolffd@0: %
wolffd@0: %  P = sompak_sammon(sMap,ft,cout,ct,rlen)
wolffd@0: %
wolffd@0: % ARGUMENTS ([]'s are optional and can be given as empty: [] or '')
wolffd@0: %  sMap   (struct) map struct
wolffd@0: %         (string) filename
wolffd@0: %  [ft]   (string) 'pak' or 'box'. Argument must be defined, if
wolffd@0: %                  input file is used.
wolffd@0: %  [cout] (string) output file name. If argument is not defined 
wolffd@0: %                  (i.e argument is '[]') temporary file '__abcdef' is
wolffd@0: %                  used in operations and *it_is_removed* after 
wolffd@0: %                  operations!!!
wolffd@0: %  [ct]   (string) 'pak' or 'box'. Argument must be defined, if
wolffd@0: %                  output file is used.
wolffd@0: %  rlen   (scalar) running length
wolffd@0: %
wolffd@0: % RETURNS: 
wolffd@0: %  P      (matrix) the mapping coordinates
wolffd@0: %
wolffd@0: % Calls SOM_PAK Sammon's mapping program (sammon) from Matlab. Notice
wolffd@0: % that to use this function, the SOM_PAK programs must be in your
wolffd@0: % search path, or the variable 'SOM_PAKDIR' which is a string
wolffd@0: % containing the program path, must be defined in the workspace.
wolffd@0: % SOM_PAK programs can be found from:
wolffd@0: % http://www.cis.hut.fi/research/som_lvq_pak.shtml
wolffd@0: %
wolffd@0: % See also SOMPAK_INIT, SOMPAK_SAMMON, SOMPAK_SAMMON_GUI,
wolffd@0: %          SOMPAK_GUI, SAMMON.
wolffd@0: 
wolffd@0: % Contributed to SOM Toolbox vs2, February 2nd, 2000 by Juha Parhankangas
wolffd@0: % Copyright (c) by Juha Parhankangas
wolffd@0: % http://www.cis.hut.fi/projects/somtoolbox/
wolffd@0: 
wolffd@0: % Juha Parhankangas 050100
wolffd@0: 
wolffd@0: NO_FILE = 0;
wolffd@0: 
wolffd@0: nargchk(5,5,nargin);
wolffd@0: 
wolffd@0: if ~(isstruct(sMap) | isstr(sMap))
wolffd@0:   error('Argument ''sMap'' must be a struct or filename.');
wolffd@0: end
wolffd@0: 
wolffd@0: if isstr(sMap)
wolffd@0:  if isempty(ft) | ~isstr(ft) | ~(strcmp(ft,'pak') | strcmp(ft,'box'))
wolffd@0:    error('Argument ''ft'' must be string ''pak'' or ''box''.');
wolffd@0:  end
wolffd@0:  if strcmp(ft,'pak')
wolffd@0:    sMap=som_read_cod(sMap);
wolffd@0:  else
wolffd@0:    new_var=diff_varname;
wolffd@0:    varnames=evalin('base','who');
wolffd@0:    loadname=eval(cat(2,'who(''-file'',''',sMap,''')'));
wolffd@0:    if any(strcmp(loadname{1},evalin('base','who')))
wolffd@0:      assignin('base',new_var,evalin('base',loadname{1}));
wolffd@0:      evalin('base',cat(2,'load(''',sMap,''');'));
wolffd@0:      new_var2=diff_varname;
wolffd@0: 
wolffd@0:      assignin('base',new_var2,evalin('base',loadname{1}));
wolffd@0:      assignin('base',loadname{1},evalin('base',new_var));
wolffd@0:      evalin('base',cat(2,'clear ',new_var));
wolffd@0:      sMap=evalin('base',new_var2);
wolffd@0:      evalin('base',cat(2,'clear ',new_var2));
wolffd@0:    else
wolffd@0:      evalin('base',cat(2,'load(''',sMap,''');'));
wolffd@0:      sMap=evalin('base',loadname{1});
wolffd@0:      evalin('base',cat(2,'clear ',loadname{1}));
wolffd@0:    end   
wolffd@0:  end
wolffd@0: end
wolffd@0: 
wolffd@0: if ~isstr(cout) & isempty(cout)
wolffd@0:   NO_FILE = 1;
wolffd@0:   cout = '__abcdef';
wolffd@0: elseif ~isstr(cout) | isempty(cout)
wolffd@0:   error('Argument ''cout'' must be a string or ''[]''.');
wolffd@0: end
wolffd@0: 
wolffd@0: if ~NO_FILE & (isempty(ct) | ~(strcmp(ct,'pak') | strcmp(ct,'box')))
wolffd@0:   error('Argument ''ct'' must be string ''pak'' or ''box''.');
wolffd@0: end
wolffd@0: 
wolffd@0: som_write_cod(sMap,cout);
wolffd@0: 
wolffd@0: if ~is_positive_integer(rlen)
wolffd@0:   error('Argument ''rlen'' must be a positive integer.');
wolffd@0: end
wolffd@0: 
wolffd@0: if any(strcmp('SOM_PAKDIR',evalin('base','who')))
wolffd@0:   command=cat(2,evalin('base','SOM_PAKDIR'),'sammon ');
wolffd@0: else
wolffd@0:   command='sammon ';
wolffd@0: end
wolffd@0: 
wolffd@0: str = sprintf('%s -cin %s -cout %s -rlen %d',command,cout,cout,rlen);
wolffd@0: 
wolffd@0: if isunix
wolffd@0:   unix(str);
wolffd@0: else
wolffd@0:   dos(str);
wolffd@0: end
wolffd@0: 
wolffd@0: sMap=som_read_cod(cout);
wolffd@0: 
wolffd@0: if ~NO_FILE
wolffd@0:   if isunix
wolffd@0:     unix(cat(2,'/bin/rm ',cout));
wolffd@0:   else
wolffd@0:     dos(cat(2,'del ',cout));
wolffd@0:   end
wolffd@0:   if strcmp(ct,'box');
wolffd@0:     sMap=sMap.codebook;
wolffd@0:     eval(cat(2,'save ',cout,' sMap'));
wolffd@0:     disp(cat(2,'Output is saved to the file ',sprintf('''%s.mat''.',cout)));
wolffd@0:   else
wolffd@0:     som_write_cod(sMap,cout);
wolffd@0:     sMap=sMap.codebook;
wolffd@0:     disp(cat(2,'Output is saved to the file ',cout,'.'));
wolffd@0:   end
wolffd@0: else
wolffd@0:   if isunix
wolffd@0:     unix('/bin/rm __abcdef');
wolffd@0:   else
wolffd@0:     dos('del __abcdef');
wolffd@0:   end
wolffd@0: end
wolffd@0: 
wolffd@0: 
wolffd@0: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
wolffd@0: 
wolffd@0: function bool = is_positive_integer(x)
wolffd@0: 
wolffd@0: bool = ~isempty(x) & isreal(x) & all(size(x) == 1) & x > 0;
wolffd@0: if ~isempty(bool)
wolffd@0:   if bool & x~=round(x)
wolffd@0:     bool = 0;
wolffd@0:   end
wolffd@0: else
wolffd@0:   bool = 0;
wolffd@0: end
wolffd@0: 
wolffd@0: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
wolffd@0: 
wolffd@0: function str = diff_varname();
wolffd@0: 
wolffd@0: array=evalin('base','who');
wolffd@0: 
wolffd@0: if isempty(array)
wolffd@0:   str='a';
wolffd@0:   return;
wolffd@0: end
wolffd@0: 
wolffd@0: for i=1:length(array)
wolffd@0:   lens(i)=length(array{i});
wolffd@0: end
wolffd@0: 
wolffd@0: 
wolffd@0: ind=max(lens);
wolffd@0: 
wolffd@0: str(1:ind+1)='a';
wolffd@0: 
wolffd@0: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
wolffd@0: 
wolffd@0: 
wolffd@0: 
wolffd@0: 
wolffd@0: 
wolffd@0: 
wolffd@0: