{ "_id": "6a39928d4c3da884a9289d00", "Package": "lstar", "Title": "Uniform Data Model and 'Zarr' Interchange for Single-Cell Omics", "Version": "0.1.0", "Authors@R": "person(\"Peter\", \"Kharchenko\", role = c(\"aut\", \"cre\"),\nemail = \"pk.restricted@gmail.com\")", "Description": "A lightweight interchange layer for single-cell and\nspatial omics data, built on the L-star model of labelled axes\nand typed fields over them, serialized to the 'Zarr' format.\nProvides bidirectional converters (\"profiles\") for 'Seurat',\n'SingleCellExperiment', 'Conos', and 'pagoda2' objects,\nincluding collections of heterogeneous samples, via a shared\nC++ core ('libstar') so the same store is readable from R,\n'Python', and C++.", "License": "MIT + file LICENSE", "Encoding": "UTF-8", "URL": "https://github.com/kharchenkolab/lstar", "BugReports": "https://github.com/kharchenkolab/lstar/issues", "VignetteBuilder": "knitr", "Additional_repositories": "https://bnprks.r-universe.dev", "SystemRequirements": "C++17, zlib", "Config/testthat/edition": "3", "Config/roxygen2/version": "8.0.0", "NeedsCompilation": "yes", "Packaged": { "Date": "2026-06-22 19:42:45 UTC", "User": "root" }, "Author": "Peter Kharchenko [aut, cre]", "Maintainer": "Peter Kharchenko ", "Config/pak/sysreqs": "zlib1g-dev", "Repository": "https://cran.r-universe.dev", "Date/Publication": "2026-06-22 18:32:03 UTC", "RemoteUrl": "https://github.com/cran/lstar", "RemoteRef": "HEAD", "RemoteSha": "360ba1c499d185eff88348e18eaf209d666c5176", "MD5sum": "1faa625a021e91937f071ec5993c2a0e", "_user": "cran", "_type": "src", "_file": "lstar_0.1.0.tar.gz", "_fileid": "df8bb80afd4c19c4beb6be4f1364581700995022c0b02f3c10f1323ad8f7bc17", "_filesize": 337018, "_sha256": "df8bb80afd4c19c4beb6be4f1364581700995022c0b02f3c10f1323ad8f7bc17", "_created": "2026-06-22T19:42:45.000Z", "_published": "2026-06-22T19:52:45.314Z", "_distro": "noble", "_jobs": [ { "job": 82804808154, "time": 510, "config": "linux-devel-arm64", "r": "4.7.0", "check": "OK", "artifact": "7803280517" }, { "job": 82804808232, "time": 536, "config": "linux-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "7803289583" }, { "job": 82804808138, "time": 545, "config": "linux-release-arm64", "r": "4.6.0", "check": "OK", "artifact": "7803293473" }, { "job": 82804808157, "time": 523, "config": "linux-release-x86_64", "r": "4.6.0", "check": "OK", "artifact": "7803285023" }, { "job": 82802785440, "time": 631, "config": "source", "r": "4.6.0", "check": "OK", "artifact": "7803089322" }, { "job": 82804808107, "time": 198, "config": "wasm-release", "r": "4.6.0", "check": "OK", "artifact": "7803165659" } ], "_buildurl": "https://github.com/r-universe/cran/actions/runs/27978623424", "_status": "success", "_host": "GitHub-Actions", "_upstream": "https://github.com/cran/lstar", "_commit": { "id": "360ba1c499d185eff88348e18eaf209d666c5176", "author": "Peter Kharchenko ", "committer": "cran-robot ", "message": "version 0.1.0\n", "time": 1782153123 }, "_maintainer": { "name": "Peter Kharchenko", "email": "pk.restricted@gmail.com" }, "_registered": true, "_dependencies": [ { "package": "cpp11", "role": "LinkingTo" }, { "package": "Matrix", "role": "Imports" }, { "package": "methods", "role": "Imports" }, { "package": "stats", "role": "Imports" }, { "package": "utils", "role": "Imports" }, { "package": "SeuratObject", "role": "Suggests" }, { "package": "Seurat", "role": "Suggests" }, { "package": "SingleCellExperiment", "role": "Suggests" }, { "package": "SummarizedExperiment", "role": "Suggests" }, { "package": "S4Vectors", "role": "Suggests" }, { "package": "GenomicRanges", "role": "Suggests" }, { "package": "igraph", "role": "Suggests" }, { "package": "conos", "role": "Suggests" }, { "package": "pagoda2", "role": "Suggests" }, { "package": "BPCells", "role": "Suggests" }, { "package": "HDF5Array", "role": "Suggests" }, { "package": "testthat", "version": ">= 3.0.0", "role": "Suggests" }, { "package": "knitr", "role": "Suggests" }, { "package": "rmarkdown", "role": "Suggests" } ], "_owner": "cran", "_selfowned": false, "_usedby": 0, "_updates": [ { "week": "2026-26", "n": 1 } ], "_tags": [ { "name": "0.1.0", "date": "2026-06-22" } ], "_stars": 0, "_userbio": { "uuid": 6899542, "type": "organization", "name": "cran", "followers": 609, "description": "Unofficial read-only mirror of all CRAN R packages" }, "_downloads": { "count": 0, "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/lstar" }, "_devurl": "https://github.com/kharchenkolab/lstar", "_searchresults": 53, "_topics": [ "zlib", "cpp", "openmp" ], "_rbuild": "4.6.0", "_assets": [ "extra/citation.cff", "extra/citation.html", "extra/citation.json", "extra/citation.txt", "extra/contents.json", "extra/lstar.html", "extra/NEWS.html", "extra/NEWS.txt", "LICENSE", "manual.pdf" ], "_cranurl": false, "_releases": [ { "version": "0.1.0", "date": "2026-06-22" } ], "_exports": [ "col_sum_by_group", "collection_from", "field_value", "lstar_markers", "lstar_read", "lstar_read_block", "lstar_read_genes", "lstar_stream_col_sum_by_group", "lstar_write", "read_conos", "read_sce", "read_sce_backed", "read_seurat", "read_seurat_backed", "stream_col_stats", "write_conos", "write_pagoda2", "write_sce", "write_seurat" ], "_help": [ { "page": "col_sum_by_group", "title": "Per-(group, gene) sufficient stats over a CSC measure (the shared libstar kernel).", "topics": [ "col_sum_by_group" ] }, { "page": "collection_from", "title": "Assemble a collection of heterogeneous samples from per-sample objects.", "topics": [ "collection_from" ] }, { "page": "field_value", "title": "Accessor: a field's value by name.", "topics": [ "field_value" ] }, { "page": "lstar_markers", "title": "Tidy marker table for a factor's DE bundle.", "topics": [ "lstar_markers" ] }, { "page": "lstar_read", "title": "Read an L* Zarr store into an R dataset.", "topics": [ "lstar_read" ] }, { "page": "lstar_read_block", "title": "Read a contiguous gene (column) range of a CSC measure from an L* store, bounded-memory.", "topics": [ "lstar_read_block" ] }, { "page": "lstar_read_genes", "title": "Read an arbitrary set of gene columns of a CSC measure, returning cells x genes.", "topics": [ "lstar_read_genes" ] }, { "page": "lstar_stream_col_sum_by_group", "title": "Per-(group, gene) sums of a CSC measure in a store, streamed and bounded-memory.", "topics": [ "lstar_stream_col_sum_by_group" ] }, { "page": "lstar_write", "title": "Write an R dataset to an L* Zarr store.", "topics": [ "lstar_write" ] }, { "page": "print.lstar_dataset", "title": "Print an L* dataset", "topics": [ "print.lstar_dataset" ] }, { "page": "read_conos", "title": "Reconstruct a Conos object from an L* collection", "topics": [ "read_conos" ] }, { "page": "read_sce", "title": "Read a SingleCellExperiment into an L* dataset.", "topics": [ "read_sce" ] }, { "page": "read_sce_backed", "title": "Open an .h5ad's expression matrix as a disk-backed SingleCellExperiment assay (via HDF5Array).", "topics": [ "read_sce_backed" ] }, { "page": "read_seurat", "title": "Read a Seurat object into an L* dataset.", "topics": [ "read_seurat" ] }, { "page": "read_seurat_backed", "title": "Open an .h5ad's expression matrix as a disk-backed Seurat v5 assay (via BPCells).", "topics": [ "read_seurat_backed" ] }, { "page": "stream_col_stats", "title": "Per-gene mean/variance of a CSC measure in a store, read with bounded memory.", "topics": [ "stream_col_stats" ] }, { "page": "write_conos", "title": "Build an L* dataset from a Conos object (a collection of samples).", "topics": [ "write_conos" ] }, { "page": "write_pagoda2", "title": "Export a Pagoda2 object to an L* (*.lstar.zarr) store.", "topics": [ "write_pagoda2" ] }, { "page": "write_sce", "title": "Build a SingleCellExperiment from an L* dataset.", "topics": [ "write_sce" ] }, { "page": "write_seurat", "title": "Build a Seurat object from an L* dataset.", "topics": [ "write_seurat" ] } ], "_rundeps": [ "cpp11", "lattice", "Matrix" ], "_sysdeps": [ { "shlib": "libz", "package": "zlib1g", "headers": "zlib1g-dev", "source": "zlib", "version": "1:1.3.dfsg-3.1ubuntu2.1", "name": "zlib", "homepage": "http://zlib.net/", "description": "compression library - runtime" }, { "shlib": "libstdc++", "package": "libstdc++6", "source": "gcc", "version": "14.2.0-4ubuntu2~24.04.1", "name": "c++", "homepage": "http://gcc.gnu.org/", "description": "GNU Standard C++ Library v3" }, { "shlib": "libgomp", "package": "libgomp1", "source": "gcc", "version": "14.2.0-4ubuntu2~24.04.1", "name": "openmp", "homepage": "http://gcc.gnu.org/", "description": "GCC OpenMP (GOMP) support library" } ], "_vignettes": [ { "source": "converting-formats.Rmd", "filename": "converting-formats.html", "title": "Converting between single-cell formats with lstar", "engine": "knitr::rmarkdown", "headings": [ "The model in R, end to end", "Converting to and from Seurat / SingleCellExperiment", "The lstar convert command line" ], "created": "2026-06-22 18:32:03", "modified": "2026-06-22 18:32:03", "commits": 1 } ], "_score": 2.724275869600789, "_indexed": true, "_nocasepkg": "lstar", "_universes": [ "cran", "kharchenkolab" ], "_binaries": [ { "r": "4.7.0", "os": "linux", "version": "0.1.0", "date": "2026-06-22T19:50:59.000Z", "distro": "noble", "arch": "aarch64", "commit": "360ba1c499d185eff88348e18eaf209d666c5176", "fileid": "ec24294cb207ee1ec4e0c78988481668051b9480d7388fd0bd0b84aeb6bff3cb", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/cran/actions/runs/27978623424" }, { "r": "4.7.0", "os": "linux", "version": "0.1.0", "date": "2026-06-22T19:51:20.000Z", "distro": "noble", "arch": "x86_64", "commit": "360ba1c499d185eff88348e18eaf209d666c5176", "fileid": "2a906b1a95a2bbd0933a2c5acb6df7ffe1d2f9d34116ec9fa4eeb462979d7797", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/cran/actions/runs/27978623424" }, { "r": "4.6.0", "os": "linux", "version": "0.1.0", "date": "2026-06-22T19:51:31.000Z", "distro": "noble", "arch": "aarch64", "commit": "360ba1c499d185eff88348e18eaf209d666c5176", "fileid": "c41af286d2518d1cdaa9de8e97347004706a98c345c706caff372e8cb93c7396", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/cran/actions/runs/27978623424" }, { "r": "4.6.0", "os": "linux", "version": "0.1.0", "date": "2026-06-22T19:51:03.000Z", "distro": "noble", "arch": "x86_64", "commit": "360ba1c499d185eff88348e18eaf209d666c5176", "fileid": "c43745a54f73d182902d5093d932b2cf506adf14789de8cfbc67646b5596cba2", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/cran/actions/runs/27978623424" }, { "r": "4.6.0", "os": "wasm", "version": "0.1.0", "date": "2026-06-22T19:46:23.000Z", "arch": "emscripten", "commit": "360ba1c499d185eff88348e18eaf209d666c5176", "fileid": "517cf0cf3c11328a542d07f51c4890ad6645305a665daec169c389986dcbf5b5", "status": "success", "buildurl": "https://github.com/r-universe/cran/actions/runs/27978623424" } ] }