Spherical
A variation of Matlab's cart2sph, that transforms a vector of Cartesian coordinates (East, North, Up) to radar coordinates (Range, Azimuth, Elevation). Note the different definition of radar coords vs. spherical coords, which require this different function (see exact definitions within the help...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (44): xyz2rae Download |
Free Split and Merge Expectation-Maximization algorithm for Multivariate Gaussian Mixtures. This algorithm is suitable to estimate mixture parameters and the number of conpounds Usage ------- [logl , M , S , P] = fsmem_mvgm(Z , [M0] , [S0] , [P0] , [option]); Inputs ------- Z Measurements (d x N)...
Platforms: Matlab
License: Freeware | Size: 215.04 KB | Download (43): Free Split and Merge Expectation Maximization for MultiVariate Gaussian Mixture Download |
Features:1. the program calculates the matter power spectrum, temperature spectrum, polarisation- and cross-correlation spectrum of a curved or flat Friedman-Robertson-Walker universe.2. it calculates the age of the universe, sigma8 and the age of the first start formation.3. massless neutrino's,...
Platforms: Matlab
License: Freeware | Size: 716.8 KB | Download (47): CMBACCUR Download |
Wigner3j( J123, M123) calculates the Wigner 3j-symbol according to Racah formula.The Wigner 3j symbol is useful for multiplication of Spherical Harmonics (and their generalizations) and for addition of angular momentum.The are related to the Clebsch-Gordan coefficients by:Wigner3j( J123, M123 ) =...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (40): Wigner3j symbol Download |
HEALPix is an acronym for Hierarchical Equal Area isoLatitude Pixelization of a sphere. As suggested in the name, this pixelization produces a subdivision of a spherical surface in which each pixel covers the same surface area as every other pixel. The figure below shows the partitioning of a...
Platforms: Mac
License: Freeware | Size: 27.7 MB | Download (35): HEALPix Download |
The Ejs Great Circles model displays the frictionless motion of a particle that is constrained to follow the surface of a perfect sphere. The sphere rotates underneath the particle, but since there is no friction, and the sphere is perfectly spherical, the motion of the particle is not influenced...
Platforms: Mac
License: Freeware | Size: 10.24 KB | Download (35): Great Circles Model Download |
3dom (3D Object Modeler) is a modeler distributed under the GPL. 3dom was designed to be renderer independant (ie you should be able to model scenes for POV-Ray, Renderman, VRML, MGF, >). 3dom is a solid modeler. It can compute the intersection, the union and the difference of two objects....
Platforms: *nix
License: Freeware | Size: 624.64 KB | Download (41): 3dom, a 3d object modeler Download |
aipy is a Python package that collects together tools for radio astronomical interferometry. In addition to pure-python phasing, calibration, imaging, and deconvolution code, this package includes interfaces to MIRIAD (a Fortran interferometry package) and HEALPix (a package for representing...
Platforms: *nix
License: Freeware | Size: 942.08 KB | Download (41): aipy Download |
Pearlscale Goldfish Wallpaper is an interactive and smoothly desktop background which let you click of your mouse to guide Pearlscale Goldfish fish in any given direction. Pearlscale Goldfish is a very gracious and beautiful aquarium fish of the goldfish species. The pearlscale goldfish is a...
Platforms: Windows, Windows 7
License: Freeware | Size: 3.31 MB | Download (46): Pearlscale Goldfish Wallpaper Download |