CosmoSim is a simulator for gravitational lensing.
cd Tests/roulette
sh test.sh
pdflatex report.tex
The test produces report.pdf which compares different roulette formalism
to a raytrace simulation. Each page considers one lens and source configuration.
The top row shows the source and the raytrace simulation of the distorted
image. The other rows show the roulette simulations for $m=3,5,15$ with
corresponding difference image.
The heuristics in the right hand column are
norm for the Euclidean distance between raytrace and roulette simulation
(eight-bit images)relnorm is the norm normalised, as a per pixel valueminimum and maximum are the smallest and largest pixel error (signed).