Chapter 7: Random Systems gauss.m stochwalk.m Chapter 8: Finite Differences: Ordinary Differential Equations euler.c rk.c rkstep.c Pendulum.java Pendulum.html Pendulum.class Pendulum$ImagePanel.class Chapter 9: Finite Differences: Partial Differential Equations str.c diffexp.c diffimp.c diffadi.c sor.c Chapter 10: Finite Elements beam.py Chapter 11: Cellular Automta and Lattice Gases lgssq.c lgshex.c Chapter 12: Function Fitting svdfit.r svdhist.r Chapter 13: Transforms ica.r Chapter 15: Optimization opt.m Appendix 1: Graphical and Mathematical Software line.py image.py surface.py tkline.py tkimage.py JavaLine.java JavaImage.java xline.c ximage.c glexample.c glimage.c glsurf.c volume.py psline.c psimage.c sound.py stl.c Appendix 2: Benchmarking pi.c pim.c pi.py pim.py Appendix 3: Parallel Programming sendudp.c recvudp.c udpsnd.py udprcv.py mpipi.c