smoothing histogram

http://glowingpython.blogspot.fr/2012/08/kernel-density-estimation-with-scipy.html

imshow help

http://research.endlessfernweh.com/colormaps/


http://minerva.ufsc.br/~andre/PyCASSO-0.9.3/usage.html

filaments

https://science.nrao.edu/science/meetings/2014/filamentary-structure/program

job priority set help

http://www.nixtutor.com/linux/changing-priority-on-linux-processes/

E-B modes

http://www7b.biglobe.ne.jp/~kcy05t/inflation.html

Astrophysics Source Code Library

http://asterisk.apod.com/wp/?page_id=12

eigenvalues in IDL

https://www.astro.virginia.edu/class/oconnell/astr511/idl_5.1_html/idl89.htm

http://emp.byui.edu/brownd/mathematics/calculus-rn-rm/hessian-etc.pdf