{ "_id": "6a12c494acfb0bcc41d1f0b3", "Package": "slopes", "Title": "Calculate Slopes of Roads, Rivers and Trajectories", "Version": "1.0.1", "Authors@R": "c(\nperson(\"Robin\", \"Lovelace\", email = \"rob00x@gmail.com\", role = c(\"aut\", \"cre\", \"cph\"),\ncomment = c(ORCID = \"0000-0001-5679-6536\")),\nperson(\"Rosa\", \"Félix\", email = \"rosamfelix@tecnico.ulisboa.pt\", role = c(\"aut\"),\ncomment = c(ORCID = \"0000-0002-5642-6006\")),\nperson(\"Joey\", \"Talbot\", email = \"j.d.talbot@leeds.ac.uk\", role = c(\"aut\"),\ncomment = c(ORCID = \"0000-0002-6520-4560\")),\nperson(\"Gonçalo\", \"Matos\", email = \"goncaloafmatos@tecnico.ulisboa.pt\", role = c(\"aut\"),\ncomment = c(ORCID = \"0009-0001-3489-1732\")),\nperson(\"Dan\", \"Olner\", role = c(\"rev\"), comment = \"Dan reviewed the package for rOpenSci, see https://github.com/ropensci/software-review/issues/420#issuecomment-857662657 \"),\nperson(\"Andy\", \"Teucher\", role = c(\"rev\"), comment = \"Andy reviewed the package for rOpenSci, see https://github.com/ropensci/software-review/issues/420#issuecomment-858231647 \")\n)", "Description": "Calculates the slope (longitudinal gradient or steepness)\nof linear geographic features such as roads (for more details,\nsee Ariza-López et al. (2019) )\nand rivers (for more details, see Cohen et al. (2018)\n). It can use local Digital\nElevation Model (DEM) data or download DEM data via the\n'ceramic' package. The package also provides functions to add\nelevation data to linestrings and visualize elevation profiles.", "License": "GPL-3", "URL": "https://github.com/ropensci/slopes/,\nhttps://docs.ropensci.org/slopes/", "BugReports": "https://github.com/ropensci/slopes/issues", "Encoding": "UTF-8", "LazyData": "true", "RoxygenNote": "7.3.2", "Config/Needs/website": "generics", "VignetteBuilder": "knitr", "Config/testthat/edition": "3", "NeedsCompilation": "no", "Packaged": { "Date": "2026-05-24 09:24:11 UTC", "User": "root" }, "Author": "Robin Lovelace [aut, cre, cph] (ORCID:\n), Rosa Félix [aut]\n(ORCID: ), Joey Talbot\n[aut] (ORCID: ), Gonçalo\nMatos [aut] (ORCID: ),\nDan Olner [rev] (Dan reviewed the package for rOpenSci, see\nhttps://github.com/ropensci/software-review/issues/420#issuecomment-857662657),\nAndy Teucher [rev] (Andy reviewed the package for rOpenSci, see\nhttps://github.com/ropensci/software-review/issues/420#issuecomment-858231647)", "Maintainer": "Robin Lovelace ", "Config/pak/sysreqs": "libabsl-dev cmake libgdal-dev gdal-bin libgeos-dev\nlibssl-dev libproj-dev libsqlite3-dev libudunits2-dev", "Repository": "https://cranhaven.r-universe.dev", "Date/Publication": "2026-05-24 02:02:00 UTC", "RemoteUrl": "https://github.com/cranhaven/cranhaven.r-universe.dev", "RemoteRef": "package/slopes", "RemoteSha": "ad636fd12b403a28c3bb84799b4e85a7025ecd3e", "RemoteSubdir": "slopes", "MD5sum": "4a0a70579aaa413e7b6fc35257afe57f", "_user": "cranhaven", "_type": "src", "_file": "slopes_1.0.1.tar.gz", "_fileid": "fbc4f0e05370e2f1c4be9a831449761c29b83f3f970075f8bb6038b1e1da4fca", "_filesize": 1299892, "_sha256": "fbc4f0e05370e2f1c4be9a831449761c29b83f3f970075f8bb6038b1e1da4fca", "_created": "2026-05-24T09:24:11.000Z", "_published": "2026-05-24T09:27:48.593Z", "_distro": "noble", "_jobs": [ { "job": 77586829191, "time": 188, "config": "linux-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "7184020272" }, { "job": 77586829234, "time": 183, "config": 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"_status": "success", "_host": "GitHub-Actions", "_upstream": "https://github.com/cranhaven/cranhaven.r-universe.dev", "_commit": { "id": "ad636fd12b403a28c3bb84799b4e85a7025ecd3e", "author": "GitHub Action ", "committer": "GitHub Action ", "message": "Add slopes to CRANhaven, because archived on 2026-05-24 02:02:00 +0000\n", "time": 1779588120 }, "_maintainer": { "name": "Robin Lovelace", "email": "rob00x@gmail.com", "login": "robinlovelace", "mastodon": "@robinlovelace@fosstodon.org", "bluesky": "@robinlovelace.bsky.social", "linkedin": "in/robin-lovelace-20751a34", "orcid": "0000-0001-5679-6536", "twitter": "@robinlovelace", "description": "Professor of Transport Data Science, University of Leeds 🎓 Researcher, teacher and builder of open source solutions 🚶🚲🚀", "uuid": 1825120 }, "_registered": true, "_dependencies": [ { "package": "R", "version": ">= 2.10", "role": "Depends" }, { "package": "sf", "role": "Imports" }, { "package": "raster", "role": "Imports" }, { "package": "methods", "role": "Imports" }, { "package": "pbapply", "role": "Imports" }, { "package": "geodist", "role": "Imports" }, { "package": "colorspace", "role": "Imports" }, { "package": "terra", "role": "Suggests" }, { "package": "knitr", "role": "Suggests" }, { "package": "rmarkdown", "role": "Suggests" }, { "package": "ceramic", "role": "Suggests" }, { "package": "bookdown", "role": "Suggests" }, { "package": "covr", "role": "Suggests" }, { "package": "testthat", "role": "Suggests" }, { "package": "osmextract", "role": "Suggests" }, { "package": "stplanr", "role": "Suggests" }, { "package": "dplyr", "role": "Suggests" }, { "package": "tmap", "role": "Suggests" }, { "package": "leaflet", "role": "Suggests" }, { "package": "bench", "role": "Suggests" }, { "package": "rlang", "role": "Suggests" } ], "_owner": "cranhaven", "_selfowned": true, "_usedby": 0, "_updates": [ { "week": "2026-21", "n": 1 } ], "_tags": [], "_topics": [ "archived", "packages", "r-universe" ], "_stars": 5, 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"slope_distance", "slope_distance_mean", "slope_distance_weighted", "slope_matrix", "slope_matrix_mean", "slope_matrix_weighted", "slope_raster", "slope_vector", "slope_xyz", "z_cumulative_difference", "z_direction", "z_elevation_change_start_end", "z_end", "z_max", "z_mean", "z_min", "z_start", "z_value" ], "_datasets": [ { "name": "cyclestreets_route", "title": "A journey from CycleStreets.net", "object": "cyclestreets_route", "class": [ "sf", "data.frame" ], "fields": [ "name", "distances", "time", "busynance", "elevations", "start_longitude", "start_latitude", "finish_longitude", "finish_latitude", "gradient_segment", "elevation_change", "provisionName", "quietness", "quietness_segment", "geometry" ], "rows": 18, "table": true, "tojson": true }, { "name": "dem_lisbon_raster", "title": "Elevation in central Lisbon, Portugal", "object": "dem_lisbon_raster", "class": [ "RasterLayer" ], "fields": [], "table": false, "tojson": false }, { "name": "lisbon_road_network", "title": "Road segments in Lisbon", "object": "lisbon_road_network", "class": [ "sf", "tbl_df", "tbl", "data.frame" ], "fields": [ "OBJECTID", "Z_Min", "Z_Max", "Z_Mean", "Min_Slope", "Max_Slope", "Avg_Slope", "geom" ], "rows": 271, "table": true, "tojson": true }, { "name": "lisbon_road_segment", "title": "A road segment in Lisbon, Portugal", "object": "lisbon_road_segment", "class": [ "sf", "tbl_df", "tbl", "data.frame" ], "fields": [ "OBJECTID", "Z_Min", "Z_Max", "Z_Mean", "Min_Slope", "Max_Slope", "Avg_Slope", "geom" ], "rows": 1, "table": true, "tojson": true }, { "name": "lisbon_road_segment_3d", "title": "A road segment in Lisbon, Portugal", "object": "lisbon_road_segment_3d", "class": [ "sf", "tbl_df", "tbl", "data.frame" ], "fields": [ "OBJECTID", "Z_Min", "Z_Max", "Z_Mean", "Min_Slope", "Max_Slope", "Avg_Slope", "geom" ], "rows": 1, "table": true, "tojson": true }, { "name": "lisbon_road_segment_xyz_mapbox", "title": "A road segment in Lisbon, Portugal", "object": "lisbon_road_segment_xyz_mapbox", "class": [ "sf", "tbl_df", "tbl", "data.frame" ], "fields": [ "OBJECTID", "Z_Min", "Z_Max", "Z_Mean", "Min_Slope", "Max_Slope", "Avg_Slope", "geom" ], "rows": 1, "table": true, "tojson": true }, { "name": "lisbon_route", "title": "A route composed of a single linestring in Lisbon, Portugal", "object": "lisbon_route", "class": [ "sf", "tbl_df", "tbl", "data.frame" ], "fields": [ "geometry", "ID", "sum_length", "pathfound" ], "rows": 1, "table": true, "tojson": true }, { "name": "lisbon_route_3d", "title": "A route composed of a single linestring in Lisbon, Portugal", "object": "lisbon_route_3d", "class": [ "sf", "tbl_df", "tbl", "data.frame" ], "fields": [ "geometry", "ID", "sum_length", "pathfound" ], "rows": 1, "table": true, "tojson": true }, { "name": "lisbon_route_xyz_mapbox", "title": "A route composed of a single linestring in Lisbon, Portugal", "object": "lisbon_route_xyz_mapbox", "class": [ "sf", "tbl_df", "tbl", "data.frame" ], "fields": [ "geometry", "ID", "sum_length", "pathfound" ], "rows": 1, "table": true, "tojson": true }, { "name": "magnolia_xy", "title": "Road segments in Magnolia, Seattle", "object": "magnolia_xy", "class": [ "sf", "tbl_df", "tbl", "data.frame" ], "fields": [ "BLOCKNBR", "SPEEDLIMIT", "SLOPE_PCT", "geometry" ], "rows": 433, "table": true, "tojson": true } ], "_help": [ { "page": "cyclestreets_route", "title": "A journey from CycleStreets.net", "topics": [ "cyclestreets_route" ] }, { "page": "dem_lisbon_raster", "title": "Elevation in central Lisbon, Portugal", "topics": [ "dem_lisbon_raster" ] }, { "page": "elevation_add", "title": "Take a linestring and add a third (z) dimension to its coordinates", "topics": [ "elevation_add" ] }, { "page": "elevation_extract", "title": "Extract elevations from coordinates", "topics": [ "elevation_extract" ] }, { "page": "elevation_get", "title": "Get elevation data from hosted maptile services", "topics": [ "elevation_get" ] }, { "page": "lisbon_road_network", "title": "Road segments in Lisbon", "topics": [ "lisbon_road_network" ] }, { "page": "lisbon_road_segment", "title": "A road segment in Lisbon, Portugal", "topics": [ "lisbon_road_segment", "lisbon_road_segment_3d", "lisbon_road_segment_xyz_mapbox" ] }, { "page": "lisbon_route", "title": "A route composed of a single linestring in Lisbon, Portugal", "topics": [ "lisbon_route", "lisbon_route_3d", "lisbon_route_xyz_mapbox" ] }, { "page": "magnolia_xy", "title": "Road segments in Magnolia, Seattle", "topics": [ "magnolia_xy" ] }, { "page": "plot_dz", "title": "Plot a digital elevation profile based on xyz data", "topics": [ "plot_dz" ] }, { "page": "plot_slope", "title": "Plot slope data for a 3d linestring with base R graphics", "topics": [ "plot_slope" ] }, { "page": "sequential_dist", "title": "Calculate the sequential distances between sequential coordinate pairs", "topics": [ "sequential_dist" ] }, { "page": "slope_matrix", "title": "Calculate the gradient of 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