{ "_id": "6a0f60b4acfb0bcc41c5bb3f", "Package": "eRTG3D", "Title": "Empirically Informed Random Trajectory Generation in 3-D", "Version": "0.7.0", "Authors@R": "c(\nperson(\"Merlin\", \"Unterfinger\", email = \"info@munterfinger.ch\", role = c(\"aut\", \"cre\"), comment = c(ORCID = \"0000-0003-2020-2366\")),\nperson(\"Kamran\", \"Safi\", email = \"ksafi@orn.mpg.de\", role = c(\"ctb\", \"ths\")),\nperson(\"George\", \"Technitis\", email = \"george.technitis@gmail.com\", role = c(\"ctb\", \"ths\")),\nperson(\"Robert\", \"Weibel\", email = \"robert.weibel@geo.uzh.ch\", role = \"ths\"))", "Maintainer": "Merlin Unterfinger ", "URL": "https://munterfi.github.io/eRTG3D/,\nhttps://github.com/munterfi/eRTG3D/", "BugReports": "https://github.com/munterfi/eRTG3D/issues/", "Description": "Creates realistic random trajectories in a 3-D space\nbetween two given fix points, so-called conditional empirical\nrandom walks (CERWs). The trajectory generation is based on\nempirical distribution functions extracted from observed\ntrajectories (training data) and thus reflects the geometrical\nmovement characteristics of the mover. A digital elevation\nmodel (DEM), representing the Earth's surface, and a background\nlayer of probabilities (e.g. food sources, uplift potential,\nwaterbodies, etc.) can be used to influence the trajectories.\nUnterfinger M (2018). \"3-D Trajectory Simulation in Movement\nEcology: Conditional Empirical Random Walk\". Master's thesis,\nUniversity of Zurich.\n.\nTechnitis G, Weibel R, Kranstauber B, Safi K (2016). \"An\nalgorithm for empirically informed random trajectory generation\nbetween two endpoints\". GIScience 2016: Ninth International\nConference on Geographic Information Science, 9, online.\n.", "License": "GPL-3", "Encoding": "UTF-8", "LazyData": "true", "RoxygenNote": "7.1.2", "VignetteBuilder": "knitr", "NeedsCompilation": "no", "Config/pak/sysreqs": "cmake libgdal-dev gdal-bin libgeos-dev make\nlibicu-dev libjpeg-dev libpng-dev libtiff-dev libuv1-dev\nlibssl-dev libproj-dev libsqlite3-dev", "Repository": "https://munterfi.r-universe.dev", "Date/Publication": "2022-02-23 14:41:15 UTC", "RemoteUrl": "https://github.com/munterfi/ertg3d", "RemoteRef": "HEAD", "RemoteSha": "1165c60772d9a81c1b21ecf490a46a0feb6a0850", "Packaged": { "Date": "2026-05-21 11:00:14 UTC", "User": "root" }, "Author": "Merlin Unterfinger [aut, cre] (ORCID:\n),\nKamran Safi [ctb, ths],\nGeorge Technitis [ctb, ths],\nRobert Weibel [ths]", "MD5sum": "dc0948261fcc24c2a0d17b6da6871445", "_user": "munterfi", "_type": "src", "_file": "eRTG3D_0.7.0.tar.gz", "_fileid": "491df544f7cb8c56150d3aa7bb8816247311cd3fa606bafb0feef68cea331541", "_filesize": 2066908, "_sha256": "491df544f7cb8c56150d3aa7bb8816247311cd3fa606bafb0feef68cea331541", "_created": "2026-05-21T11:00:14.000Z", "_published": "2026-05-21T19:44:52.534Z", "_distro": "noble", "_jobs": [ { "job": 77254782762, "time": 253, "config": "linux-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "7134039227" }, { "job": 77254783073, "time": 247, "config": "linux-release-x86_64", "r": "4.6.0", "check": "OK", "artifact": "7134037561" }, { "job": 77254779307, "time": 156, "config": "macos-oldrel-arm64", "r": "4.5.3", "check": "OK", "artifact": "7134191232" }, { "job": 77254778999, "time": 202, "config": "macos-release-arm64", "r": "4.6.0", "check": "OK", "artifact": "7134175544" }, { "job": 77254778674, "time": 265, "config": "source", "r": "4.6.0", "check": "OK", "artifact": "7133957095" }, { "job": 77254778716, "time": 143, "config": "wasm-release", "r": "4.6.0", "check": "OK", "artifact": "7145581279" }, { "job": 77254779357, "time": 195, "config": "windows-devel", "r": "4.7.0", "check": "OK", "artifact": "7134021083" }, { "job": 77254779304, "time": 193, "config": "windows-oldrel", "r": "4.5.3", "check": "OK", "artifact": "7134022600" }, { "job": 77254779508, "time": 211, "config": "windows-release", "r": "4.6.0", "check": "OK", "artifact": "7134026244" } ], "_buildurl": "https://github.com/r-universe/munterfi/actions/runs/26221668443", "_status": "success", "_host": "GitHub-Actions", "_upstream": "https://github.com/munterfi/ertg3d", "_commit": { "id": "1165c60772d9a81c1b21ecf490a46a0feb6a0850", "author": "Merlin Unterfinger ", "committer": "Merlin Unterfinger ", "message": "Use inherits(x, \"class\") notation.\n", "time": 1645627275 }, "_maintainer": { "name": "Merlin Unterfinger", "email": "info@munterfinger.ch", "login": "munterfi", "orcid": "0000-0003-2020-2366", "twitter": "@munterfi1", "description": "Software Engineer / Data Scientist at the Swiss Federal Railways (SBB), specialized in Mobility Simulation and Geographic Information Science.", "uuid": 29773509 }, "_registered": true, "_dependencies": [ { "package": "R", "version": ">= 3.5.0", "role": "Depends" }, { "package": "CircStats", "version": ">= 0.2-6", "role": "Imports" }, { "package": "ggplot2", "version": ">= 3.1.1", "role": "Imports" }, { "package": "pbapply", "version": ">= 1.4-1", "role": "Imports" }, { "package": "plotly", "version": ">= 4.9.0", "role": "Imports" }, { "package": "raster", "version": ">= 2.9-5", "role": "Imports" }, { "package": "rasterVis", "version": ">= 0.45", "role": "Imports" }, { "package": "tiff", "version": ">= 0.1-5", "role": "Imports" }, { "package": "knitr", "version": ">= 1.23", "role": "Suggests" }, { "package": "pander", "version": ">= 0.6.3", "role": "Suggests" }, { "package": "gridExtra", "version": ">= 2.3", "role": "Suggests" }, { "package": "plyr", "version": ">= 1.8.4", "role": "Suggests" }, { "package": "rmarkdown", "version": ">= 1.13", "role": "Suggests" }, { "package": "sf", "version": ">= 0.7-4", "role": "Suggests" }, { "package": "sp", "version": ">= 1.3-1", "role": "Suggests" }, { "package": "testthat", "version": ">= 2.1.0", "role": "Suggests" }, { "package": "covr", "version": ">= 3.2.1", "role": "Suggests" } ], "_owner": "munterfi", "_selfowned": true, "_usedby": 0, "_updates": [], "_tags": [], "_topics": [ "3d", "birds", "conditional-empirical-random-walk", "gliding-and-soaring", "machine-learning", "movement-ecology", "random-trajectory-generator", "random-walk", "simulation", "trajectory-generation" ], "_stars": 6, "_contributors": [ { "user": "munterfi", "count": 196, "uuid": 29773509 }, { "user": "nnneogeorge", "count": 1, "uuid": 5681558 } ], "_userbio": { "uuid": 29773509, "type": "user", "name": "Merlin Unterfinger", "description": "Software Engineer / Data Scientist at the Swiss Federal Railways (SBB), specialized in Mobility Simulation and Geographic Information Science." }, "_downloads": { "count": 266, "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/eRTG3D" }, "_devurl": "https://github.com/munterfi/ertg3d", "_pkgdown": "https://munterfi.github.io/eRTG3D/", "_searchresults": 19, "_rbuild": "4.6.0", "_assets": [ "extra/citation.cff", "extra/citation.html", "extra/citation.json", "extra/citation.txt", "extra/contents.json", "extra/eRTG3D.html", "extra/NEWS.html", "extra/NEWS.txt", "extra/readme.html", "extra/readme.md", "manual.pdf" ], "_homeurl": "https://github.com/munterfi/ertg3d", "_realowner": "munterfi", "_cranurl": true, "_releases": [ { "version": "0.6.2", "date": "2019-09-19" }, { "version": "0.6.3", "date": "2020-07-27" }, { "version": "0.6.4", "date": "2021-10-02" }, { "version": "0.7.0", "date": "2022-02-25" } ], "_exports": [ ".check.extent", ".cutMidpoints", ".df2sf.3d", ".distance.2d", ".distance.3d", ".get.azimut", ".get.polar", ".is.df.xyz", ".matrix2sf.3d", ".move2sf.3d", ".plot3d.density", ".test2text", ".wrap", "chiMaps", "dem2track.extent", "dist2point.3d", "dist2target.3d", "filter.dead.ends", "get.densities.3d", "get.glideRatio.3d", "get.section.densities.3d", "get.track.densities.3d", "is.sf.3d", "lift2target.3d", "logRasterStack", "movingMedian", "n.sim.cond.3d", "n.sim.glidingSoaring.3d", "parpbapply", "parpblapply", "parpbsapply", "plot2d", "plot3d", "plot3d.densities", "plot3d.multiplot", "plot3d.tldCube", "plotRaster", "qProb.3d", "reproduce.track.3d", "saveImageSlices", "sf2df.3d", "sim.cond.3d", "sim.crw.3d", "sim.glidingSoaring.3d", "sim.uncond.3d", "test.eRTG.3d", "test.verification.3d", "track.extent", "track.properties.3d", "track.split.3d", "track2sf.3d", "transformCRS.3d", "turn2target.3d", "turnLiftStepHist", "voxelCount" ], "_datasets": [ { "name": "dem", "title": "Example digital elevation model (DEM)", "object": "dem", "class": [ "RasterLayer" ], "fields": [], "table": false, "tojson": false }, { "name": "niclas", "title": "Example track data.frame", "object": "niclas", "class": [ "data.frame" ], "fields": [ "x", "y", "z" ], "rows": 31, "table": true, "tojson": true } ], "_help": [ { "page": "chiMaps", "title": "Chi maps of two variables", "topics": [ "chiMaps" ] }, { "page": "dem", "title": "Example digital elevation model (DEM)", "topics": [ "dem" ] }, { "page": "dem2track.extent", "title": "Crops the DEM to the extent of the track with a buffer", "topics": [ "dem2track.extent" ] }, { "page": "dist2point.3d", "title": "Distance of each track point to a given point", "topics": [ "dist2point.3d" ] }, { "page": "dist2target.3d", "title": "Distance to target", "topics": [ "dist2target.3d" ] }, { "page": "eRTG3D", "title": "eRTG3D: Empirically Informed Random Trajectory Generator in 3-D", "topics": [ "eRTG3D" ] }, { "page": "filter.dead.ends", "title": "Remove dead ends", "topics": [ "filter.dead.ends" ] }, { "page": "get.densities.3d", "title": "Extract tldCube and autodifference approximation functions", "topics": [ "get.densities.3d" ] }, { "page": "get.glideRatio.3d", "title": "Calculate glide ratio", "topics": [ "get.glideRatio.3d" ] }, { "page": "get.section.densities.3d", "title": "Extract tldCube and autodifferences functions from track sections", "topics": [ "get.section.densities.3d" ] }, { "page": "get.track.densities.3d", "title": "Extract tldCube and autodifferences functions from a consistent track", "topics": [ "get.track.densities.3d" ] }, { "page": "is.sf.3d", "title": "Tests if the object is a simple feature collection (class: ''sf, data.frame'')", "topics": [ "is.sf.3d" ] }, { "page": "lift2target.3d", "title": "Lift angle to target", "topics": [ "lift2target.3d" ] }, { "page": "logRasterStack", "title": "Converts a rasterStack to logarithmic scale", "topics": [ "logRasterStack" ] }, { "page": "movingMedian", "title": "Moving median in one dimension", "topics": [ "movingMedian" ] }, { "page": "n.sim.cond.3d", "title": "Conditional Empirical Random Walks (CERW) in 3-D", "topics": [ "n.sim.cond.3d" ] }, { "page": "n.sim.glidingSoaring.3d", "title": "Simulates multiple 'gliding & soaring' tracks with a given number of gliding steps", "topics": [ "n.sim.glidingSoaring.3d" ] }, { "page": "niclas", "title": "Example track data.frame", "topics": [ "niclas" ] }, { "page": "parpbapply", "title": "Parallel apply with progressbar", "topics": [ "parpbapply" ] }, { "page": "parpblapply", "title": "Parallel lapply with progressbar", "topics": [ "parpblapply" ] }, { "page": "parpbsapply", "title": "Parallel sapply with progressbar", "topics": [ "parpbsapply" ] }, { "page": "plot2d", "title": "Plot function to plot the 3-D tracks in 2-D plane", "topics": [ "plot2d" ] }, { "page": "plot3d", "title": "Plot track(s) with a surface of a digital elevation model in three dimensions", "topics": [ "plot3d" ] }, { "page": "plot3d.densities", "title": "Density plots of turn angle, lift angle and step length", "topics": [ "plot3d.densities" ] }, { "page": "plot3d.multiplot", "title": "Multiple plot function for ggplot objects", "topics": [ "plot3d.multiplot" ] }, { "page": "plot3d.tldCube", "title": "Visualize turn-lift-step histogram", "topics": [ "plot3d.tldCube" ] }, { "page": "plotRaster", "title": "Plots a rasterLayer or rasterStack", "topics": [ "plotRaster" ] }, { "page": "qProb.3d", "title": "Q probabilities for n steps", "topics": [ "qProb.3d" ] }, { "page": "reproduce.track.3d", "title": "Reproduce a track with the eRTG3D", "topics": [ "reproduce.track.3d" ] }, { "page": "saveImageSlices", "title": "Export a dataCube as image slice sequence", "topics": [ "saveImageSlices" ] }, { "page": "sf2df.3d", "title": "Converts a sf data.frame to a normal dataframe", "topics": [ "sf2df.3d" ] }, { "page": "sim.cond.3d", "title": "Conditional Empirical Random Walk (CERW) in 3-D", "topics": [ "sim.cond.3d" ] }, { "page": "sim.crw.3d", "title": "Simulation of a three dimensional Correlated Random Walk", "topics": [ "sim.crw.3d" ] }, { "page": "sim.glidingSoaring.3d", "title": "Simulates 'gliding & soaring' track with a given number of gliding steps", "topics": [ "sim.glidingSoaring.3d" ] }, { "page": "sim.uncond.3d", "title": "Unconditional Empirical Random Walk (UERW) in 3-D", "topics": [ "sim.uncond.3d" ] }, { "page": "test.eRTG.3d", "title": "Test the functionality of the eRTG3D", "topics": [ "test.eRTG.3d" ] }, { "page": "test.verification.3d", "title": "Statistical Verification of the simulated track", "topics": [ "test.verification.3d" ] }, { "page": "track.extent", "title": "Extent of track(s)", "topics": [ "track.extent" ] }, { "page": "track.properties.3d", "title": "Track properties of a 3-D track", "topics": [ "track.properties.3d" ] }, { "page": "track.split.3d", "title": "This function splits the by outliers in the time lag.", "topics": [ "track.split.3d" ] }, { "page": "track2sf.3d", "title": "Converts a track to a ''sf, data.frame''", "topics": [ "track2sf.3d" ] }, { "page": "transformCRS.3d", "title": "Transform coordinates reference system (CRS) of a 3-D track", "topics": [ "transformCRS.3d" ] }, { "page": "turn2target.3d", "title": "Turn angle to target", "topics": [ "turn2target.3d" ] }, { "page": "turnLiftStepHist", "title": "Three dimensional histogram", "topics": [ "turnLiftStepHist" ] }, { "page": "voxelCount", "title": "Apply voxel counting on a point cloud", "topics": [ "voxelCount" ] } ], "_pkglogo": "https://github.com/munterfi/ertg3d/raw/HEAD/man/figures/logo.png", "_readme": "https://github.com/munterfi/ertg3d/raw/HEAD/README.md", "_rundeps": [ "askpass", "base64enc", "boot", "bslib", "cachem", "CircStats", "cli", "cpp11", "crosstalk", "curl", "data.table", "deldir", "digest", "dplyr", "evaluate", "farver", "fastmap", "fontawesome", "fs", "generics", "ggplot2", "glue", "gtable", "hexbin", "highr", "htmltools", "htmlwidgets", "httr", "interp", "isoband", "jpeg", "jquerylib", "jsonlite", "knitr", "labeling", "later", "lattice", "latticeExtra", "lazyeval", "lifecycle", "magrittr", "MASS", "memoise", "mime", "openssl", "otel", "pbapply", "pillar", "pkgconfig", "plotly", "png", "promises", "purrr", "R6", "rappdirs", "raster", "rasterVis", "RColorBrewer", "Rcpp", "RcppEigen", "rlang", "rmarkdown", "S7", "sass", "scales", "sp", "stringi", "stringr", "sys", "terra", "tibble", "tidyr", "tidyselect", "tiff", "tinytex", "utf8", "vctrs", "viridisLite", "withr", "xfun", "yaml", "zoo" ], "_vignettes": [ { "source": "v6.Rmd", "filename": "v6.html", "title": "Coordinate reference system", "engine": "knitr::rmarkdown", "headings": [ "Definition", "Transform CRS in 3-D" ], "created": "2019-06-10 18:23:11", "modified": "2020-08-19 21:50:12", "commits": 5 }, { "source": "v1.Rmd", "filename": "v1.html", "title": "Example data", "engine": "knitr::rmarkdown", "headings": [ "Bird trajectory", "Digital elevation model" ], "created": "2019-06-10 18:23:11", "modified": "2021-10-02 11:29:02", "commits": 4 }, { "source": "v7.Rmd", "filename": "v7.html", "title": "Linkage to the sf package", "engine": "knitr::rmarkdown", "headings": [ "Convert to sf", "Convert from sf" ], "created": "2019-06-10 18:23:11", "modified": "2020-08-19 21:50:12", "commits": 4 }, { "source": "v5.Rmd", "filename": "v5.html", "title": "Parallel computation", "engine": "knitr::rmarkdown", "headings": [], "created": "2019-06-10 18:23:11", "modified": "2020-07-26 17:10:28", "commits": 3 }, { "source": "v9.Rmd", "filename": "v9.html", "title": "Point cloud analysis", "engine": "knitr::rmarkdown", "headings": [ "Example trajectories", "Utilization distribution", "Chi square maps", "Export voxel data" ], "created": "2019-06-10 18:23:11", "modified": "2020-07-26 17:10:28", "commits": 3 }, { "source": "v2.Rmd", "filename": "v2.html", "title": "Standard workflow", "engine": "knitr::rmarkdown", "headings": [ "Workflow", "1. Movement characteristics (P)", "2. Attraction term (Q)", "3. Boundary conditions", "4. Conditional Empirical Random Walk", "Extract densities from multiple track sections", "Wrapper function to reproduce tracks" ], "created": "2019-06-10 18:23:11", "modified": "2020-07-26 17:10:28", "commits": 3 }, { "source": "v8.Rmd", "filename": "v8.html", "title": "Trajectory simulations in 2-D", "engine": "knitr::rmarkdown", "headings": [ "2-D simulations as special case of 3-D", "Example trajectory", "Constant z-dimension", "Simulations in 2-D" ], "created": "2019-06-10 18:23:11", "modified": "2020-07-26 17:10:28", "commits": 3 }, { "source": "v4.Rmd", "filename": "v4.html", "title": "Verification of results", "engine": "knitr::rmarkdown", "headings": [ "Reproduce a trajectory", "Kolmogorov-Smirnov test", "One-sample t-test" ], "created": "2019-06-10 18:23:11", "modified": "2020-07-26 17:10:28", "commits": 2 }, { "source": "v3.Rmd", "filename": "v3.html", "title": "Visualization of trajectories", "engine": "knitr::rmarkdown", "headings": [ "2-D Plot", "3-D Plot", "Densities of turn angle, lift angle and step length of tracks" ], "created": "2019-06-10 18:23:11", "modified": "2020-07-26 17:10:28", "commits": 2 } ], "_score": 5.710117365111817, "_indexed": true, "_nocasepkg": "ertg3d", "_universes": [ "munterfi" ], "_binaries": [ { "r": "4.7.0", "os": "linux", "version": "0.7.0", "date": "2026-05-21T11:03:04.000Z", "distro": "noble", "commit": "1165c60772d9a81c1b21ecf490a46a0feb6a0850", "fileid": "3c414ece74d4b9707f48360a2ca5a58e5809482b6d1804898bc9b6c84fce534d", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/munterfi/actions/runs/26221668443" }, { "r": "4.6.0", "os": "linux", "version": "0.7.0", "date": "2026-05-21T11:03:03.000Z", "distro": "noble", "commit": "1165c60772d9a81c1b21ecf490a46a0feb6a0850", "fileid": "de8a41cd5f94914a2e4c4b3689d349e7ca04758257c6847cc54919cc25cdc5ce", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/munterfi/actions/runs/26221668443" }, { "r": "4.5.3", "os": "mac", "version": "0.7.0", "date": "2026-05-21T11:11:20.000Z", "commit": "1165c60772d9a81c1b21ecf490a46a0feb6a0850", "fileid": "77fa9b07e6d4be3906097ad937f9b27a6bc28d56bd08c6bad2dead8f3a13323f", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/munterfi/actions/runs/26221668443" }, { "r": "4.6.0", "os": "mac", "version": "0.7.0", "date": "2026-05-21T11:10:10.000Z", "commit": "1165c60772d9a81c1b21ecf490a46a0feb6a0850", "fileid": "d1cfd29d79cc89a6807affa5b749dd10644fd677a75b7dc2c23c56e2b1070758", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/munterfi/actions/runs/26221668443" }, { "r": "4.6.0", "os": "wasm", "version": "0.7.0", "date": "2026-05-21T19:44:36.000Z", "commit": "1165c60772d9a81c1b21ecf490a46a0feb6a0850", "fileid": "518e3e7a847189d71d56214dbd13ae7930dfaff17e09e6931e7286fc11ef7223", "status": "success", "buildurl": "https://github.com/r-universe/munterfi/actions/runs/26221668443" }, { "r": "4.7.0", "os": "win", "version": "0.7.0", "date": "2026-05-21T11:01:41.000Z", "commit": "1165c60772d9a81c1b21ecf490a46a0feb6a0850", "fileid": "c7125c2b82064ab2e67501cb3196bf7a525855ab74ee44f1f3ce999917fa85be", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/munterfi/actions/runs/26221668443" }, { "r": "4.5.3", "os": "win", "version": "0.7.0", "date": "2026-05-21T11:01:53.000Z", "commit": "1165c60772d9a81c1b21ecf490a46a0feb6a0850", "fileid": "8c8919c7eec4402fbefd961412831e33044bc9cb228a73730e5988b48d0fe62a", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/munterfi/actions/runs/26221668443" }, { "r": "4.6.0", "os": "win", "version": "0.7.0", "date": "2026-05-21T11:01:43.000Z", "commit": "1165c60772d9a81c1b21ecf490a46a0feb6a0850", "fileid": "e00a9c160ddb24b1b64d38c9848b39899b10e601db42750bd5eb8b56fb089e20", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/munterfi/actions/runs/26221668443" } ] }