{"id":13857806,"url":"https://github.com/euctrl-pru/nvctr","last_synced_at":"2025-10-22T05:02:09.058Z","repository":{"id":56935495,"uuid":"168702124","full_name":"euctrl-pru/nvctr","owner":"euctrl-pru","description":"R  :package: about n-vector for geographical position calculations using an ellipsoidal model of Earth :globe_with_meridians:","archived":false,"fork":false,"pushed_at":"2024-04-12T09:39:37.000Z","size":1866,"stargazers_count":10,"open_issues_count":2,"forks_count":0,"subscribers_count":2,"default_branch":"master","last_synced_at":"2025-06-15T04:44:55.409Z","etag":null,"topics":["geographical-positions","n-vector","r","r-package","rstats"],"latest_commit_sha":null,"homepage":"https://nvctr.ansperformance.eu/","language":"R","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"other","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/euctrl-pru.png","metadata":{"files":{"readme":"README.Rmd","changelog":"NEWS.md","contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2019-02-01T13:33:11.000Z","updated_at":"2024-04-01T04:38:01.000Z","dependencies_parsed_at":"2025-05-10T05:45:18.218Z","dependency_job_id":null,"html_url":"https://github.com/euctrl-pru/nvctr","commit_stats":{"total_commits":102,"total_committers":3,"mean_commits":34.0,"dds":"0.21568627450980393","last_synced_commit":"7bacb928f06e995378f1b413e4cca8efa7dbf651"},"previous_names":[],"tags_count":4,"template":false,"template_full_name":null,"purl":"pkg:github/euctrl-pru/nvctr","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/euctrl-pru%2Fnvctr","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/euctrl-pru%2Fnvctr/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/euctrl-pru%2Fnvctr/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/euctrl-pru%2Fnvctr/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/euctrl-pru","download_url":"https://codeload.github.com/euctrl-pru/nvctr/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/euctrl-pru%2Fnvctr/sbom","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":265218201,"owners_count":23729496,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["geographical-positions","n-vector","r","r-package","rstats"],"created_at":"2024-08-05T03:01:47.515Z","updated_at":"2025-10-22T05:02:08.965Z","avatar_url":"https://github.com/euctrl-pru.png","language":"R","readme":"---\noutput: github_document\n#csl: https://raw.githubusercontent.com/citation-style-language/styles/master/ieee-aerospace-and-electronic-systems-magazine.csl\nlink-citations: true\nreferences:\n- id: gade_2010\n  title: A Non-Singular Horizontal Position Representation\n  author:\n  - family: Gade\n    given: Kenneth\n  volume: 63\n  issn: 0373-4633, 1469-7785\n  URL:  'www.journals.cambridge.org/abstract_S0373463309990415'\n  DOI: 10.1017/S0373463309990415\n  issue: 03\n  container-title: Journal of Navigation\n  issued:\n    year: 2010\n    month: 07\n  pages: 395-417\n- id: navigationgroupatffi_2010\n  title: The N-Vector Page\n  URL: 'https://www.navlab.net/nvector/'\n  issued:\n    year: 2010\n#    month: 07\n  author:\n  - family: Navigation Group\n    given:  'FFI'\n---\n\n\u003c!-- README.md is generated from README.Rmd. Please edit that file --\u003e\n\n```{r setup, include = FALSE}\nknitr::opts_chunk$set(\n  collapse = TRUE,\n  comment = \"#\u003e\",\n  fig.path = \"man/figures/README-\",\n  out.width = \"100%\"\n)\n```\n\n\n# nvctr \u003cimg src=\"man/figures/logo.svg\" align=\"right\" height=\"139\" /\u003e\n\n\u003c!-- badges: start --\u003e\n[![R build status](https://github.com/euctrl-pru/nvctr/workflows/R-CMD-check/badge.svg)](https://github.com/euctrl-pru/nvctr/actions)\n[![CRAN version](https://www.r-pkg.org/badges/version/nvctr)](https://cran.r-project.org/package=nvctr)\n\u003c!-- badges: end --\u003e\n\n\n## Overview\n\nThe `nvctr` package implements the n-vector approach to geographical position calculations using an\nellipsoidal model of Earth as described in [@gade_2010].\n\n\nImplementations in various computer languages can be found at the \n[n-vector page](https://www.navlab.net/nvector/) [@navigationgroupatffi_2010].\n\n\n## Installation\n\nYou can install the development version of `nvctr` from \n[GitHub](https://github.com/euctrl-pru/nvctr) with:\n\n```r\ndevtools::install_github(\"euctrl-pru/nvctr\")\n```\n\nor the CRAN version (when this package will land to CRAN):\n\n```r\ninstall.packages(\"nvctr\")\n```\n\n\n## Usage\n\n`nvctr` can be used to solve geographical position calculation like (example numbers refer to the\nones in the [vignette][vignette]):\n\n* Calculate the surface distance between two geographical positions ([Example 5][ex5]).\n* Find the destination point given start point, azimuth/bearing and distance ([Example 8][ex8]).\n* Find the mean position (center/midpoint) of several geographical positions ([Example 6][ex6]).\n* Find the intersection between two paths ([Example 9][ex9]).\n* Find the cross track distance between a path and a position ([Example 10][ex10]).\n\n\n\n[vignette]: \u003chttps://nvctr.ansperformance.eu/articles/position-calculations.html\u003e \"nvctr vignette\"\n[ex5]: \u003chttps://nvctr.ansperformance.eu/articles/position-calculations.html#example-05\u003e \"Example 5: Surface distance\"\n[ex6]: \u003chttps://nvctr.ansperformance.eu/articles/position-calculations.html#example-6-interpolated-position\u003e \"Example 6: Interpolated position\"\n[ex8]: \u003chttps://nvctr.ansperformance.eu/articles/position-calculations.html#example-8-a-and-azimuthdistance-to-b\u003e \"Example 8: A and azimuth/distance to B\"\n[ex9]: \u003chttps://nvctr.ansperformance.eu/articles/position-calculations.html#example-9-intersection-of-two-paths\u003e \"Example 9: Intersection of two paths\"\n[ex10]: \u003chttps://nvctr.ansperformance.eu/articles/position-calculations.html#example-10-cross-track-distance-cross-track-error\u003e \"Example 10: Cross track distance (cross track error)\"\n\n\n\n## References","funding_links":[],"categories":["R"],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Feuctrl-pru%2Fnvctr","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Feuctrl-pru%2Fnvctr","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Feuctrl-pru%2Fnvctr/lists"}