Add penny.mat to build system. * examples/data/penny.mat: New example data file. * examples/data/Makefile.am: Automake file for new directory of example data files. * examples/Makefile.am: Change to be just a pass-through to the subdirectories code/ and data/. * examples/@FIRfilter/FIRfilter.m, examples/@FIRfilter/FIRfilter_aggregation.m, examples/@FIRfilter/display.m, examples/@FIRfilter/module.mk, examples/@FIRfilter/subsasgn.m, examples/@FIRfilter/subsref.m, examples/@polynomial/display.m, examples/@polynomial/double.m, examples/@polynomial/end.m, examples/@polynomial/get.m, examples/@polynomial/module.mk, examples/@polynomial/mtimes.m, examples/@polynomial/numel.m, examples/@polynomial/plot.m, examples/@polynomial/polynomial.m, examples/@polynomial/polynomial_superiorto.m, examples/@polynomial/polyval.m, examples/@polynomial/roots.m, examples/@polynomial/set.m, examples/@polynomial/subsasgn.m, examples/@polynomial/subsref.m, examples/COPYING, examples/addtwomatrices.cc, examples/celldemo.cc, examples/embedded.cc, examples/fortrandemo.cc, examples/fortransub.f, examples/funcdemo.cc, examples/globaldemo.cc, examples/helloworld.cc, examples/make_int.cc, examples/mex_demo.c, examples/mycell.c, examples/myfeval.c, examples/myfevalf.f, examples/myfunc.c, examples/myhello.c, examples/mypow2.c, examples/myprop.c, examples/myset.c, examples/mysparse.c, examples/mystring.c, examples/mystruct.c, examples/oct_demo.cc, examples/oregonator.cc, examples/oregonator.m, examples/paramdemo.cc, examples/standalone.cc, examples/standalonebuiltin.cc, examples/stringdemo.cc, examples/structdemo.cc, examples/unwinddemo.cc: Move current example files to examples/code/ directory. * configure.ac: Add Makefiles in examples/code and examples/data directories. * build-aux/common.mk: Define octdatadir variable. * doc/interpreter/Makefile.am: Change location of External Code Interface examples to examples/code directory. * doc/interpreter/munge-texi.pl: Expand EXAMPLEFILE macro to examples/code directory.

## The `oregonator'.
##
## Reference:
##
##   Oscillations in chemical systems.  IV.  Limit cycle behavior in a
##   model of a real chemical reaction. Richard J. Field and Richard
##   M. Noyes, The Journal of Chemical Physics, Volume 60 Number 5,
##   March 1974.

function dx = oregonator (x, t)

  dx = zeros (3, 1);

  dx(1) = 77.27*(x(2) - x(1)*x(2) + x(1) - 8.375e-06*x(1)^2);
  dx(2) = (x(3) - x(1)*x(2) - x(2)) / 77.27;
  dx(3) = 0.161*(x(1) - x(3));

end