Drawer of spherical harmonics

Draws spherical harmonics, like those which are measured when measuring variations in gravity.

I applied it to spherical harmonics components of the Moon and the Earth. Nasa uses the same format for gravity information on other planets/moons, which i obtained here but i didn't bother inputting them. For the Earth i used data from ITG.

Installation

Can be installed via the spherical-harmonics. Spherical harmonics itself depends on:

My packages Generic, Denest, Vector-vect
Gnu Scientific Library.
via CFFI

The test also depends on lispbuilder-sdl, and cl-opengl.

use

Spherical harmonics of the moon are provided. Others you'll have to find yourself. From the package :sph-h-test, if stuff is loaded you can call in paralel:

(use-file "data/moon/jgl100j1.sha")
          (draw-result)

Paralel with: (calculate)

Maybe todo

(test)Calculation of error margins.
Calculating only upto certain indexes based on error margins on all of: spherical harmonics components, input, desired margin on output.
Tool to automatically fetch some of those spherical harmonics files, or just specify that better in readme.

Mentions

For the record, i mentioned it in Reddit, cstart forums (i don't take that project too seriously, see reddit submission.)

Tarball of small projects

Came from directory: src/lisp/spherical-harmonics/

Autodocumentation of code: Spherical-harmonics, Gsl-import, Crude-draw-array, Data-array