Divergence Spherical Coordinates

Cartesian coordinates, spherical coordinates und cylindrical coordinates can be transformed into each other. (5 languages, 2 and 3 dimensions)

This code takes an expression for a normalized AF in spherical coordinates and creates a 3D plot in cartesian coordinates. Examples are specific to Antenna Theory and Design (2nd Ed) by Stutzman and Thiele.

Archim is a program for drawing the graphs of all kinds of functions. You can define a graph explicitly and parametrically, in polar and spherical coordinates, on a plane and in space (surface). Archim will be useful for teachers and students, as well as for everyone who is interested min...


Platforms: Windows

Graph functions, relations, and inequalities in rectangular, polar, cylindrical, and spherical coordinates. Solve equations numerically, graphically, and symbolically. Graph surfaces of revolution. Create mathematical movies and web pages.


Platforms: Mac

Easy-to-use 3D grapher that plots high quality graphs for 2D and 3D functions and coordinates tables. Graphing equations is as easy as typing them down. Graphs are beautifully rendered with gradual colors and lighting and reflection effects. Both cartesian and polar coordinates are supported as...


Platforms: Mac

Easy-to-use 3D grapher that plots high quality graphs for 2D and 3D functions and coordinates tables. Graphing equations is as easy as typing them down. Graphs are beautifully rendered with gradual colors and lighting and reflection effects. Both cartesian and polar coordinates are supported as...


Platforms: *nix, Java, Linux Console, Linux Open Source, Linux Gnome

A few days ago I was in need of uniformly random points generation on the surface of sphere. I suddenly discovered that common parametrization with 2 angles is useless, it gathers too many points in the poles. At MathWorld you can find the complete demonstration, here the main lines:To pick a...


Platforms: Matlab

Calc3D is a calculator for 3-dimensional vectors, matrices, complex numbers, quaternions. For objects ( like point, line, plane and sphere) distances, intersections, volume, area of squeres, area of a triangle can be calculated.Cartesian coordinates, spherical coordinates und cylindrical...


Platforms: Windows

A computer model has been developed that provides a realistic description of the variation of the human heart surface shape during a single cardiac cycle. The model is proposed for investigations in the field of biomedical engineering, where computer simulation is necessary.A MATLAB spline...


Platforms: Matlab

This package includes two functions, evolution.m and and pulse.m. The former accept two structures, one with a set of spins with an initial position in spherical coordinates, T1, T2 and a frequency offset from the rotating frame and two, a set of parameters dictating the simulation. These inputs...


Platforms: Matlab

The Heating and Cooling a Sphere model computes the radial temperature distribution within a sphere as it is heated and cooled by a surrounding fluid. The sphere is broken into shells and the temperature of each shell is computed using a finite difference approximation to the radial heat equation...


Platforms: Mac

This software computes synthesis of spherical harmonics models on sparse coordinates or grids (provided in a geodetic or geocentric reference system). It exploits basic parallelism using openmp directives. A solution with MPI has not be taken into account since it cannot be so easily manageble...


Platforms: Windows, Mac, Linux

Programs and utility functions using the Symbolic Math Toolbox are provided to analyze vectors and tensors in general curvilinear coordinates. The programs perform the following functions: 1) runcoord plots intersecting coordinate surfaces for typical coordinate systems 2) runmetric computes and...


Platforms: Matlab

Geo::Coordinates::VandH is a Perl module that can convert and manipulate telco V and H coordinates. SYNOPSIS To convert V: 5498 H: 2895 to lat/long coordinates: use Geo::Coordinates::VandH; $blah=new Geo::Coordinates::VandH; ($lat,$lon) = $blah->vh2ll(5498,2895); printf...


Platforms: *nix

Geo::Coordinates::OSGB is a Perl module that can convert coordinates from Lat/Long to UK Grid. A UK-specific implementation of co-ordinate conversion, following formulae from the Ordnance Survey of Great Britain (hence the name). SYNOPSIS use Geo::Coordinates::OSGB qw(ll2grid grid2ll); #...


Platforms: *nix

Window Coordinates code creates a window (with the Win32 API) and displays the coordinates of the windows client area in pixels in the form of X-Axis, Y-Axis.The window can be moved, and the coordinates will be re-displayed with the new position.


Platforms: C and C plus plus

A stack-based sequential priority first decoder that returns Maximum-Likelihood solutions to spherical LAST coded MIMO system-type problems, i.e., a lattice decoder with spherical boundary control. In such problems, the depth of the search tree is known but the number of children per node is not...


Platforms: Matlab

ECEF2LLA - convert earth-centered earth-fixed (ECEF) cartesian coordinates to latitude, longitude, and altitude.USAGE:[lat,lon,alt] = ecef2lla(x,y,z)lat = geodetic latitude (radians)lon = longitude (radians)alt = height above WGS84 ellipsoid (m)x = ECEF X-coordinate (m)y = ECEF Y-coordinate (m)z...


Platforms: Matlab

[alpha,delta] = eclip2equat(lambda,beta) returns the right ascension and declination in the equatorial coordinate system corresponding to the longitudinal and latitudinal coordinates in the ecliptic coordinate system (lambda and beta).[lambda,beta] = equat2eclip(alpha,delta) returns the...


Platforms: Matlab

This function returns the coordinates for a 2-D spring, with the possibility of adding offsets at the two ends.The spring is automatically sized using the maximum expected length and the number of coils.Use >> help springcoordFor more information on usage.Please let me know if you have any...


Platforms: Matlab