GridSphere by Kurt

Produces a nearly even grid over the surface of a sphere. (sphere, grid, geodesic)

AreBadValues(A)

AreEqual(ones, twos)

AreWithin(ones, twos, tolerance)

Geodesics on an ellipsoid of revolution by Charles Karney

Solutions of the direct and inverse geodesic problems (area, distance, earth)

defaultellipsoid

ecc2flat(e)

flat2ecc(f)

Geodesic projections for an ellipsoid by Charles Karney

Four map projections based on geodesics (map projections, geodesics, azimuthal equidistant)

cassini_fwd(lat0, lon0, lat, lon, ellipsoid)

cassini_inv(lat0, lon0, x, y, ellipsoid)

eqdazim_fwd(lat0, lon0, lat, lon, ellipsoid)

Find Nearest Neighbors on Sphere by Kurt

To be used with the GridSphere function to look up the nearest point to a query on a geodesic grid. (nearest neighbor, gridsphere, sphere)

...

Archaversine(values)

AreEqual(ones, twos)

Image chamfer distances and geodesic diameter by David Legland

Propagates geodesic distances in binary images, and compute geodesic diameter (distance, chamfer, geodesic)

demoImChamferDistance

demoImGeodesicPath

demoImMaxGeodesicPath

wgs2utm (version 2) by Alexandre Schimel

Convert WGS84 coordinates (Latitude, Longitude) into UTM coordinates (northing, easting). (wgs, wgs84, utm)

wgs2utm(Lat,Lon,utmzone,utmhemi)

subtri by Kevin Moerman

Sub-triangulates patch format data. Can be used to increase the density of triangulated data (triangulation, signal processing, data exploration)

[Fs,Vs]=subtri(F,V,n)

Exact geodesic for triangular meshes by Danil Kirsanov

Geodesic (shortest path) algorithm for triangular mesh (triangulated 2D surface in 3D). (geodesic, shortest path, triangular mesh)

create_flat_triangular_mesh(step, smoothness)

create_hedgehog_mesh(N, smoothness, waist)

create_subdivision_pattern(level) %"level" is the number...

VRECKON: Find the endpoint of a geodesic on the ellipsoidal earth by Michael Kleder

Obtains a final location on ellipsoidal earth, given a start point, an azimuth and a distance. (vdist, direct, geodesic)

vreckon(lat1,lon1,s,a12)

Geodesic solver by Bilwaj Gaonkar

Program uses metric tensor as input and generates geodesic equations in 4 d space time as output (chemistry, physics, geodesic)

manifolds.m

Vectorized geodetic distance and azimuth on the WGS84 earth ellipsoid by Michael Kleder

Geodetic distance, forward azimuth, and return azimuth between coordinates (distance, wgs84, geodetic)

vdist(lat1,lon1,lat2,lon2)

geodesic by Lei Wang

GEODESIC solves geodesic problems concerning three types of surface. (cone, sphere, geodesic)

geodesic.m