Index: mttroot/mtt/cc/Makefile
==================================================================
--- mttroot/mtt/cc/Makefile
+++ mttroot/mtt/cc/Makefile
@@ -1,11 +1,11 @@
 
 .POSIX:
 
-ifeq (0,1)
 CC=g++
 
+ifeq (0,1)
 CFLAGS+=-static
 OCTAVE_LIBS_PATH=-L/usr/local/lib/octave
 OCTAVE_LIBRARIES=-loctave -lcruft -lm -lncurses -ldl -lstdc++ -lc -lkpathsea -lreadline -lf2c
 
 %.exe: %.cc
@@ -45,6 +45,8 @@
 
 $(sys)_sympar.txt:
 	mtt $(sys) sympar txt
 
 
-
+# struc2gnuplot_txt.exe is used by gnuplot_rep.make to create gnuplot input file.
+struc2gnuplot_txt.exe: $(MTT_CC)/struc2gnuplot_txt.cc
+	$(CC) -O3 -Wall -ansi -pedantic -DMAIN $(MTT_CC)/struc2gnuplot_txt.cc -o $(MTTPATH)/trans/struc2gnuplot_txt.exe 

ADDED   mttroot/mtt/cc/struc2gnuplot_txt.cc
Index: mttroot/mtt/cc/struc2gnuplot_txt.cc
==================================================================
--- /dev/null
+++ mttroot/mtt/cc/struc2gnuplot_txt.cc
@@ -0,0 +1,106 @@
+
+#include <iostream>
+#include <list.h>
+#include <string>
+
+    
+ostream &struc2gnuplot_txt(const string sys = "sim", istream &in = cin, ostream &out = cout)
+{
+  typedef struct record_ record_t;
+  struct record_
+  {
+    string       	vec;
+    unsigned int	num;
+    string     		cmp;
+    string     	 	mod;
+    unsigned int       	rpt;
+  };
+
+  list<record_t>	Lx;
+  list<record_t>	Ly;
+
+  record_t		r;
+
+
+  // read data from struc.txt
+
+  while (in >> r.vec >> r.num >> r.cmp >> r.mod >> r.rpt)
+    {
+      if ("state" == r.vec)
+	{
+	  Lx.push_back(r);
+	}
+      else if ("output" == r.vec)
+	{
+	  Ly.push_back(r);
+	}
+    }
+
+  // write header
+
+  out << "set data style lines" << endl
+      << "set xlabel \"time\"" << endl
+      << "set grid" << endl
+      << endl;
+
+  // write states (X11)
+
+  out << "set term X11" << endl
+      << "plot\\" << endl;
+  for (list<record_t>::iterator i = Lx.begin(); i != Lx.end() ; i++)
+    {
+      if (Lx.begin() != i)
+	{
+	  out << ",\\" << endl;
+	}
+      out << "\t\"MTT_work/" << sys << "_odes2.dat\" using 1:" << 2 + Ly.size() + i->num
+	  << " axes x1y1"
+	  << " title \"" << i->mod << "_" << i->cmp << "\"";
+    }
+  out << endl << endl << "pause(-1)" << endl << endl;
+
+  // write states (postscript)
+  
+  out << "set term postscript eps color" << endl
+      << "set output \"" << sys << "_states.eps\"" << endl
+      << "replot" << endl << endl;  
+
+  // write outputs (X11)
+
+  out << "set term X11" << endl
+      << "plot\\" << endl;
+  for (list<record_t>::iterator i = Ly.begin(); i != Ly.end() ; i++)
+    {
+      if (Ly.begin() != i)
+	{
+	  out << ",\\" << endl;
+	}
+      out << "\t\"MTT_work/" << sys << "_odes2.dat\" using 1:" << 1 + i->num
+	  << " axes x1y1"
+	  << " title \"" << i->mod << "_" << i->cmp << "\"";
+    }
+  out << endl << endl << "pause(-1)" << endl << endl;
+
+  // write outputs (postscript)
+  
+  out << "set term postscript eps color" << endl
+      << "set output \"" << sys << "_outputs.eps\"" << endl
+      << "replot" << endl << endl;  
+
+  return out;
+}
+
+#ifdef MAIN
+int main(int argc, char *argv[])
+{
+  if (--argc)
+    {
+      struc2gnuplot_txt(argv[1]);
+    }
+  else
+    {
+      struc2gnuplot_txt();
+    }
+  return 0;
+}
+#endif // MAIN

ADDED   mttroot/mtt/lib/rep/gnuplot_rep.make
Index: mttroot/mtt/lib/rep/gnuplot_rep.make
==================================================================
--- /dev/null
+++ mttroot/mtt/lib/rep/gnuplot_rep.make
@@ -0,0 +1,16 @@
+# -*-makefile-*-
+# create a gnuplot input file
+
+MTTFLAGS	= $(OPTS)
+
+all: $(SYS)_gnuplot.$(LANG)
+
+$(SYS)_gnuplot.txt: $(SYS)_struc.txt $(MTTPATH)/trans/struc2gnuplot_txt.exe
+	$(MTTPATH)/trans/struc2gnuplot_txt.exe $(SYS) < $(SYS)_struc.txt > $(SYS)_gnuplot.txt
+
+$(SYS)_struc.txt:
+	mtt $(MTTFLAGS) $(SYS) struc txt
+
+$(MTTPATH)/trans/struc2gnuplot_txt.exe:
+	make -f $(MTT_CC)/Makefile struc2gnuplot_txt.exe
+