{ "_id": "6a10a17aacfb0bcc41cb9684", "Package": "chopin", "Title": "Spatial Parallel Computing by Hierarchical Data Partitioning", "Version": "0.9.9-5", "Authors@R": "c(\nperson(\"Insang\", \"Song\", email = \"geoissong@gmail.com\", role = c(\"aut\", \"cre\"),\ncomment = c(ORCID = \"0000-0001-8732-3256\")),\nperson(\"Kyle\", \"Messier\", role = c(\"aut\", \"ctb\"),\ncomment = c(ORCID = \"0000-0001-9508-9623\")),\nperson(\"Alec L.\", \"Robitaille\", role = c(\"rev\"),\ncomment = \"Alec reviewed the package version 0.6.3 for rOpenSci, see \"),\nperson(\"Eric R.\", \"Scott\", role = c(\"rev\"),\ncomment = \"Eric reviewed the package version 0.6.3 for rOpenSci, see \")\n)", "Description": "Geospatial data computation is parallelized by grid,\nhierarchy, or raster files. Based on 'future' (Bengtsson, 2024\n) and 'mirai' (Gao et al.,\n2025 ) parallel back-ends,\n'terra' (Hijmans et al., 2025\n) and 'sf' (Pebesma et al.,\n2024 ) functions as well as\nconvenience functions in the package can be distributed over\nmultiple threads. The simplest way of parallelizing generic\ngeospatial computation is to start from par_pad_*() functions\nto par_grid(), par_hierarchy(), or par_multirasters()\nfunctions. Virtually any functions accepting classes in 'terra'\nor 'sf' packages can be used in the three parallelization\nfunctions. A common raster-vector overlay operation is provided\nas a function extract_at(), which uses 'exactextractr' (Baston,\n2023 ), with options\nfor kernel weights for summarizing raster values at vector\ngeometries. Other convenience functions for vector-vector\noperations including simple areal interpolation\n(summarize_aw()) and summation of exponentially decaying\nweights (summarize_sedc()) are also provided.", "License": "MIT + file LICENSE", "URL": "https://docs.ropensci.org/chopin/,\nhttps://github.com/ropensci/chopin", "BugReports": "https://github.com/ropensci/chopin/issues", "SystemRequirements": "netcdf", "Encoding": "UTF-8", "LazyData": "true", "LazyDataCompression": "xz", "Roxygen": "list(markdown = TRUE)", "RoxygenNote": "7.3.3", "VignetteBuilder": "knitr", "Config/testthat/edition": "3", "Config/pak/sysreqs": "libabsl-dev cmake libgdal-dev gdal-bin libgeos-dev\nlibglpk-dev libxml2-dev libnetcdf-dev libssl-dev libproj-dev\nlibsqlite3-dev libudunits2-dev", "Repository": "https://ropensci.r-universe.dev", "Date/Publication": "2026-04-03 12:01:51 UTC", "RemoteUrl": "https://github.com/ropensci/chopin", "RemoteRef": "main", "RemoteSha": "352b79f9a7d132f053db106ec064e5145fae4d8d", "NeedsCompilation": "no", "Packaged": { "Date": "2026-05-03 16:05:17 UTC", "User": "root" }, "Author": "Insang Song [aut, cre] (ORCID: ),\nKyle Messier [aut, ctb] (ORCID:\n),\nAlec L. Robitaille [rev] (Alec reviewed the package version 0.6.3 for\nrOpenSci, see\n),\nEric R. Scott [rev] (Eric reviewed the package version 0.6.3 for\nrOpenSci, see\n)", "Maintainer": "Insang Song ", "MD5sum": "14de66198ce989c73d550dd30c702695", "_user": "ropensci", "_type": "src", "_file": "chopin_0.9.9-5.tar.gz", "_fileid": "b05dc70ed374f3ef9213b66fc6adab30faf6950ce7d66fbb3e1aaacf272d4145", "_filesize": 5078240, "_sha256": "b05dc70ed374f3ef9213b66fc6adab30faf6950ce7d66fbb3e1aaacf272d4145", "_created": "2026-05-03T16:05:17.000Z", "_published": "2026-05-22T18:33:30.255Z", "_distro": "noble", "_jobs": [ { "job": 77439917864, "time": 303, "config": "linux-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "6772011991" }, { "job": 77439917941, "time": 261, "config": "linux-release-x86_64", "r": "4.6.0", "check": "OK", "artifact": "6772007584" }, { "job": 77439917729, "time": 162, "config": "macos-oldrel-arm64", "r": "4.5.3", "check": "OK", "artifact": "6772094924" }, { "job": 77439918531, "time": 175, "config": "macos-release-arm64", "r": "4.6.0", "check": "OK", "artifact": 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"committer": "GitHub ", "message": "Merge pull request #127 from ropensci/0.9.9\n\nwarning fixed", "time": 1775217711 }, "_maintainer": { "name": "Insang Song", "email": "geoissong@gmail.com", "login": "sigmafelix", "mastodon": "@issong@mastodon.social", "orcid": "0000-0001-8732-3256", "uuid": 25448786 }, "_registered": true, "_dependencies": [ { "package": "R", "version": ">= 4.1", "role": "Depends" }, { "package": "anticlust", "role": "Imports" }, { "package": "cli", "role": "Imports" }, { "package": "dplyr", "version": ">= 1.1.0", "role": "Imports" }, { "package": "exactextractr", "version": ">= 0.8.2", "role": "Imports" }, { "package": "future", "role": "Imports" }, { "package": "future.apply", "role": "Imports" }, { "package": "igraph", "role": "Imports" }, { "package": "methods", "role": "Imports" }, { "package": "rlang", "role": "Imports" }, { "package": "sf", "version": ">= 1.0-10", "role": "Imports" }, { "package": "sfheaders", "role": "Imports" }, { "package": "stars", 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"extra/citation.cff", "extra/citation.html", "extra/citation.json", "extra/citation.txt", "extra/contents.json", "extra/NEWS.html", "extra/NEWS.txt", "extra/readme.html", "extra/readme.md", "manual.pdf" ], "_homeurl": "https://github.com/ropensci/chopin", "_realowner": "ropensci", "_cranurl": true, "_releases": [ { "version": "0.9.4", "date": "2025-07-18" }, { "version": "0.9.9", "date": "2025-09-10" }, { "version": "0.9.9-5", "date": "2026-04-03" } ], "_exports": [ "extract_at", "kernelfunction", "par_convert_f", "par_grid", "par_grid_mirai", "par_hierarchy", "par_hierarchy_mirai", "par_make_dggrid", "par_make_h3", "par_merge_grid", "par_multirasters", "par_multirasters_mirai", "par_pad_balanced", "par_pad_grid", "par_split_list", "summarize_aw", "summarize_pp", "summarize_sedc", "summarize_st" ], "_datasets": [ { "name": "ncpoints", "title": "Mildly clustered points in North Carolina, United States", "object": "ncpoints", "class": [ "data.frame" ], "fields": [ "X", "Y" ], "rows": 2304, "table": true, "tojson": true }, { "name": "prediction_grid", "title": "Regular grid points in the mainland United States at 1km spatial resolution", "object": "prediction_grid", "class": [ "data.frame" ], "fields": [ "site_id", "lon", "lat" ], "rows": 8092995, "table": true, "tojson": true } ], "_help": [ { "page": "extract_at", "title": "Extract raster values with point buffers or polygons", "concept": [ "Macros for calculation" ], "topics": [ "extract_at", "extract_at,character,character-method", "extract_at,character,sf-method", "extract_at,character,SpatVector-method", "extract_at,SpatRaster,character-method", "extract_at,SpatRaster,sf-method", "extract_at,SpatRaster,SpatVector-method" ] }, { "page": "ncpoints", "title": "Mildly clustered points in North Carolina, United States", "concept": [ "Dataset" ], "topics": [ "ncpoints" ] }, { "page": "par_convert_f", "title": "Map specified arguments to others in literals", "topics": [ "par_convert_f" ] }, { "page": "par_grid", 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