Contents | Example Locations | MGRS - Military Grid Reference System | Basic Conversion | Understanding MGRS Codes | Precision Levels | Polar Regions (UPS) | Vectorized Operations | Geohash | The Truncation Property | Resolution by Length | Finding Required Length for Precision | Southern Hemisphere Examples | GARS - Global Area Reference System | GARS for Antarctic Locations | Georef - World Geographic Reference System | Georef for Flight Planning | Comparison of Systems | GeoCoords - Universal Coordinate Parsing | Parsing Various Formats | Parsing Multiple Coordinates | Integration with Other Functions | DMS - Degrees, Minutes, Seconds Conversion | Parsing DMS Strings | Parsing Coordinate Pairs | Parsing Angles and Azimuths | Encoding to DMS Strings | Output Formats | Splitting and Combining Components | Round-Trip Conversion | Integration with GeoCoords | See Also
Package: geographiclib 0.4.2.9002
Michael Sumner
geographiclib: Access to 'GeographicLib'
Bindings to the 'GeographicLib' C++ library <https://geographiclib.sourceforge.io/> for precise geodetic calculations including geodesic computations (distance, bearing, paths, intersections), map projections (UTM/UPS, Transverse Mercator, Lambert Conformal Conic, and more), grid reference systems (MGRS, Geohash, GARS, Georef), coordinate conversions (geocentric, local Cartesian), and polygon area on the WGS84 ellipsoid. All functions are fully vectorized.
Authors:
geographiclib_0.4.2.9002.tar.gz
geographiclib_0.4.2.9002.zip(r-4.7)geographiclib_0.4.2.9002.zip(r-4.6)geographiclib_0.4.2.9002.zip(r-4.5)
geographiclib_0.4.2.9002.tgz(r-4.6-x86_64)geographiclib_0.4.2.9002.tgz(r-4.6-arm64)geographiclib_0.4.2.9002.tgz(r-4.5-x86_64)geographiclib_0.4.2.9002.tgz(r-4.5-arm64)
geographiclib_0.4.2.9002.tar.gz(r-4.7-arm64)geographiclib_0.4.2.9002.tar.gz(r-4.7-x86_64)geographiclib_0.4.2.9002.tar.gz(r-4.6-arm64)geographiclib_0.4.2.9002.tar.gz(r-4.6-x86_64)
geographiclib_0.4.2.9002.tgz(r-4.6-emscripten)
manual.pdf |manual.html✨
DESCRIPTION |NEWS
card.svg |card.png
geographiclib/json (API)
| # Install 'geographiclib' in R: |
| install.packages('geographiclib', repos = c('https://hypertidy.r-universe.dev', 'https://cloud.r-project.org')) |
Bug tracker:https://github.com/hypertidy/geographiclib/issues
Last updated from:dd9bac8e49. Checks:13 OK. Indexed: yes.
| Target | Result | Time | Files | Syslog |
|---|---|---|---|---|
| linux-devel-arm64 | OK | 224 | ||
| linux-devel-x86_64 | OK | 206 | ||
| source / vignettes | OK | 286 | ||
| linux-release-arm64 | OK | 217 | ||
| linux-release-x86_64 | OK | 199 | ||
| macos-release-arm64 | OK | 114 | ||
| macos-release-x86_64 | OK | 284 | ||
| macos-oldrel-arm64 | OK | 118 | ||
| macos-oldrel-x86_64 | OK | 253 | ||
| windows-devel | OK | 244 | ||
| windows-release | OK | 227 | ||
| windows-oldrel | OK | 189 | ||
| wasm-release | OK | 191 |
Exports:albers_fwdalbers_revazeq_fwdazeq_revcassini_fwdcassini_revdms_combinedms_decodedms_decode_angledms_decode_azimuthdms_decode_latlondms_encodedms_splitellipsoid_circleellipsoid_curvatureellipsoid_latitudesellipsoid_latitudes_invellipsoid_paramsgars_fwdgars_revgeocentric_fwdgeocentric_revgeocoords_parsegeodesic_directgeodesic_direct_fastgeodesic_distancegeodesic_distance_fastgeodesic_distance_matrixgeodesic_distance_matrix_fastgeodesic_intersectgeodesic_intersect_allgeodesic_intersect_nextgeodesic_intersect_segmentgeodesic_inversegeodesic_inverse_fastgeodesic_linegeodesic_nngeodesic_nn_radiusgeodesic_pathgeodesic_path_fastgeohash_fwdgeohash_lengthgeohash_resolutiongeohash_revgeoref_fwdgeoref_revgnomonic_fwdgnomonic_revlcc_fwdlcc_revlocalcartesian_fwdlocalcartesian_revmgrs_fwdmgrs_revosgb_fwdosgb_gridrefosgb_gridref_revosgb_revpolarstereo_fwdpolarstereo_revpolygon_areapolygon_area_cumulativerhumb_directrhumb_distancerhumb_distance_matrixrhumb_inverserhumb_linerhumb_pathtm_exact_fwdtm_exact_revtm_fwdtm_revutmups_fwdutmups_rev
Dependencies:cpp11
Grid Reference Systems: MGRS, Geohash, GARS, and Georef
Last update: 2026-01-04
Started: 2025-12-23
Geodesic Calculations
Contents | Example Locations | The Inverse Problem: Distance and Bearing | Basic Distance Calculation | Understanding Azimuth | Distances Between Cities | Antarctic Distances | The Direct Problem: Finding Destinations | Basic Direct Calculation | Creating a "Circle" of Destinations | Antarctic Traverse Planning | Geodesic Paths | Sydney to London Great Circle | Antarctic Circle Path | Trans-Antarctic Path | Distance Matrices | City Distance Matrix | Antarctic Station Distances | Cross-Matrix: Cities to Antarctic Stations | Rhumb Lines (Loxodromes) | Geodesic vs Rhumb | East-West Travel | Rhumb Path | Polygon Area | Antarctic Ice Shelf Area | Multiple Polygons | Winding Direction Matters | Exact vs Fast Geodesic | Performance Comparison | Geodesic Intersections | Closest Intersection | Segment Intersection | Non-Intersecting Segments | Next Intersection | All Intersections Within a Distance | Practical Example: Great Circle Route Crossings | Vectorized Operations | Nearest Neighbor Search | Basic k-Nearest Neighbors | Multiple Query Points | Radius Search | Self-Search for Clustering | Distance Matrix | Performance | See Also
Last update: 2026-01-04
Started: 2025-12-23
Introduction to geographiclib
Contents | MGRS - Military Grid Reference System package provides R bindings to the | MGRS - Military Grid Reference System | UTM/UPS - Universal Transverse Mercator | Geohash | GARS - Global Area Reference System | Georef - World Geographic Reference System | Lambert Conformal Conic Projection | Azimuthal Equidistant Projection | Cassini-Soldner Projection | Gnomonic Projection | OSGB - Ordnance Survey National Grid | Local Cartesian (ENU) Coordinates | Geocentric (ECEF) Coordinates | WGS84 Ellipsoid | Geodesic Calculations | Inverse problem: distance and bearing between points | Direct problem: destination from start, bearing, and distance | Geodesic paths | Distance matrix | Rhumb Lines (Loxodromes) | Polygon Area | Polar Regions | Performance | Further Reading
Last update: 2026-01-04
Started: 2025-12-22
Local Coordinates and the Ellipsoid
Contents | Example Locations | Geocentric (ECEF) Coordinates | Basic Conversion | Understanding ECEF | Height Above Ellipsoid | Antarctic Stations in ECEF | Round-trip Conversion | GPS Applications | Local Cartesian (ENU) Coordinates | Local Survey Application | Including Height | Robotics/Navigation Application | WGS84 Ellipsoid Properties | Basic Parameters | Earth's Shape | Radii of Curvature | Circle of Latitude Properties | Auxiliary Latitudes | Combining Coordinate Systems | GNSS Data Processing | Antarctic Field Survey | Coordinate System Summary | See Also
Last update: 2026-01-04
Started: 2025-12-23
Map Projections
Contents | Example Locations | UTM/UPS - Universal Transverse Mercator | Basic Conversion | Understanding UTM Zones | Polar Regions (UPS) | Round-trip Conversion | Transverse Mercator (Custom) | Lambert Conformal Conic (LCC) | Single Standard Parallel | Two Standard Parallels | LCC for Antarctica | Albers Equal Area | Two Standard Parallels (Most Common) | CONUS Albers (US Standard) | Antarctic Albers | Why Equal-Area Matters | Polar Stereographic | Antarctic Stations | Arctic Points | Pole at Origin | Azimuthal Equidistant | Distances from Sydney | Distances from South Pole | Cassini-Soldner Projection | Regional Mapping | Cassini for Antarctic Survey | Gnomonic Projection | Great Circle Routes Appear Straight | Route Planning | OSGB - Ordnance Survey National Grid | Grid References | Projection Comparison | See Also
Last update: 2026-01-04
Started: 2025-12-23
Readme and manuals
Help Manual
| Help page | Topics |
|---|---|
| Albers Equal Area projection | albers_fwd albers_rev |
| Azimuthal Equidistant projection | azeq_fwd azeq_rev |
| Cassini-Soldner projection | cassini_fwd cassini_rev |
| Convert between degrees and DMS (degrees, minutes, seconds) representation | dms_combine dms_decode dms_decode_angle dms_decode_azimuth dms_decode_latlon dms_encode dms_split |
| WGS84 Ellipsoid parameters and calculations | ellipsoid_circle ellipsoid_curvature ellipsoid_latitudes ellipsoid_latitudes_inv ellipsoid_params |
| Global Area Reference System (GARS) | gars_fwd gars_rev |
| Convert between geodetic and geocentric (ECEF) coordinates | geocentric_fwd geocentric_rev |
| Parse Geographic Coordinate Strings | geocoords_parse |
| Geodesic calculations on the WGS84 ellipsoid | geodesic_direct geodesic_distance geodesic_distance_matrix geodesic_inverse geodesic_line geodesic_path |
| Fast geodesic calculations (series approximation) | geodesic_direct_fast geodesic_distance_fast geodesic_distance_matrix_fast geodesic_inverse_fast geodesic_path_fast |
| Geodesic intersections | geodesic_intersect geodesic_intersect_all geodesic_intersect_next geodesic_intersect_segment |
| Nearest Neighbor Search Using Geodesic Distance | geodesic_nn geodesic_nn_radius |
| Convert coordinates to/from Geohash | geohash_fwd geohash_length geohash_resolution geohash_rev |
| World Geographic Reference System (Georef) | georef_fwd georef_rev |
| Gnomonic projection | gnomonic_fwd gnomonic_rev |
| Lambert Conformal Conic projection | lcc_fwd lcc_rev |
| Local Cartesian (ENU) coordinate system | localcartesian_fwd localcartesian_rev |
| Convert coordinates to/from Military Grid Reference System (MGRS) | mgrs_fwd mgrs_rev |
| Ordnance Survey National Grid (Great Britain) | osgb_fwd osgb_gridref osgb_gridref_rev osgb_rev |
| Polar Stereographic projection | polarstereo_fwd polarstereo_rev |
| Compute geodesic polygon area and perimeter | polygon_area |
| Compute cumulative polygon area and perimeter | polygon_area_cumulative |
| Rhumb line (loxodrome) calculations on the WGS84 ellipsoid | rhumb_direct rhumb_distance rhumb_distance_matrix rhumb_inverse rhumb_line rhumb_path |
| Transverse Mercator projection | tm_exact_fwd tm_exact_rev tm_fwd tm_rev |
| Convert coordinates to/from UTM/UPS projection | utmups_fwd utmups_rev |
