GNU Octave, version 2.0.17 (i586-pc-linux-gnu).
Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002 John W. Eaton.
This is free software with ABSOLUTELY NO WARRANTY.
For details, type `warranty'.

octave> spring_wrapper 
octave> spring_wrapper 
octave> pendulum_wrapper 
error: lsode: inconsistent sizes for state and derivative vectors
error: evaluating index expression near line 7, column 7
error: evaluating assignment expression near line 7, column 5
error: near line 7 of file `/home/rychlik/481/InClassFiles2005/Octave/pendulum_wrapper.m'
error: evaluating expression near line 6, column 1
octave> pendulum_wrapper 
warning: function name `spring' does not agree with function file name `/home/rychlik/481/InClassFiles2005/Octave/pendulum.m'
error: lsode: the symbol `pendulum' is not valid as a function
error: evaluating index expression near line 7, column 7
error: evaluating assignment expression near line 7, column 5
error: near line 7 of file `/home/rychlik/481/InClassFiles2005/Octave/pendulum_wrapper.m'
error: evaluating expression near line 6, column 1
octave> pendulum_wrapper 
error: `mass' undefined near line 4 column 17
error: evaluating expression near line 4, column 17
error: evaluating binary operator `/' near line 4, column 15
error: evaluating binary operator `*' near line 4, column 22
error: evaluating assignment expression near line 4, column 11
error: called from `pendulum' in file `/home/rychlik/481/InClassFiles2005/Octave/pendulum.m'
error: lsode: evaluation of user-supplied function failed
error: lsode: inconsistent sizes for state and derivative vectors
error: near line 7 of file `/home/rychlik/481/InClassFiles2005/Octave/pendulum_wrapper.m'
octave> pendulum_wrapper 
octave> pendulum_wrapper 
octave> pendulum_wrapper 
parse error near line 10 of file /home/rychlik/481/InClassFiles2005/Octave/pendulum_wrapper.m

>>> plot(sol(:,1:2);
                   ^

octave> pendulum_wrapper 
octave> pendulum_wrapper 
octave> set term postscript
warning: set is obsolete -- use gset instead
octave> set output pendulum.ps
warning: set is obsolete -- use gset instead
octave> 
gnuplot> set output pendulum.ps
                    ^
         line 0: expecting filename


octave> set output "pendulum.ps"
warning: set is obsolete -- use gset instead
octave> 
gnuplot> set output pendulum.ps
                    ^
         line 0: expecting filename


octave> set output 'pendulum.ps'
warning: set is obsolete -- use gset instead
octave> 
gnuplot> set output pendulum.ps
                    ^
         line 0: expecting filename


octave> gset output 'pendulum.ps'
octave> replot
octave> set term postscript color
warning: set is obsolete -- use gset instead
octave> replot
octave> pendulum_wrapper 
octave>