# Laplacian Experiments

I'm experimenting with Laplacian operations on graphs on these pages, with some R code to see what actually happens when I do these things to some graphs. Some shared R code is at the bottom of this page, and other R code is on the pages that use it.

See also Laplacian Experiments/Eigenvectors for a look at the eigenvectors of the Laplacian, and Laplacian Experiments/Eigenmatrices for a similar look at eigenmatrices of the Laplacianoid.

## Misc code

Makefile
include $(MF)/Rstep.mk experiments.mk # I have invented some filetypes, starting with .ode-experiment.R, # for this project. # Each .ode-experiment.R file is expected to produce a bunch of .png files. # Once the experiment has run, we combine all those .png files into a # single animated .gif image, and that's what we display. # Note I don't know how to have R write .gif images, and animated bitmaps # don't have good support yet in .png or .svg or whatever free format so I # go with .gif for that. %.ode-experiment.animate.gif : %.ode-experiment.Rout convert -adjoin$*.ode-experiment.frame.*.png -delay 20 $@$(RM) \$*.ode-experiment.frame.*.png