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updated 4 months ago

Christoffel symbols and geodesics, symbolic model by Ninetrees

Uses MATLAB symbolic processor to produce symbols (symbolic, christoffel symbols, geodesic)

Christoffel_symbols_and_geodesics_0100_M2011a.m

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updated 1 year ago

Geodesics on an ellipsoid of revolution by Charles Karney

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

A1m1f(epsi)

A2m1f(epsi)

A3coeff(n)

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updated 1 year ago

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)

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updated 1 year ago

GridSphere by Kurt

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

AreBadValues(A)

AreEqual(ones, twos)

AreWithin(ones, twos, tolerance)

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updated 2 years ago

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. (gridsphere, grid, sphere)

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Archaversine(values)

AreEqual(ones, twos)

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updated 2 years ago

Image chamfer distances and geodesic diameter by David Legland

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

demoImChamferDistance

demoImGeodesicPath

demoImMaxGeodesicPath

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updated 2 years ago

wgs2utm (version 2) by Alexandre Schimel

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

wgs2utm(Lat,Lon,utmzone,utmhemi)

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updated almost 4 years ago

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)

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updated 6 years ago

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)

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updated 6 years ago

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)

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updated 7 years ago

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

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updated almost 9 years ago

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

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

vdist(lat1,lon1,lat2,lon2)

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updated 9 years ago

geodesic by Lei Wang

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

geodesic.m

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