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bioconductor-biocviews

Infrastructure to support 'views' used to classify Bioconductor packages. 'biocViews' are directed acyclic graphs of terms from a controlled vocabulary. There are three major classifications, corresponding to 'software', 'annotation', and '

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biocViews

Dependencies & Environment

Package-intrinsic requirements from the Bioconductor landing page — reproduce in any R environment.

  • Version: 1.80.0 · Bioconductor: 3.23 · R: ≥ 4.6
  • Imports: Biobase, graph, RBGL, XML, RCurl, RUnit, BiocManager
  • Install: BiocManager::install("biocViews")

When to Use

  • Generating repository HTML and control files (PACKAGES, VIEWS) for a CRAN-style layout using genReposControlFiles and writeRepositoryHtml.
  • Extracting package vignettes from source packages to a local directory using extractVignettes.
  • Querying a repository to generate a list of BiocViews objects for specific top-level terms (e.g., "Software") using getBiocSubViews.
  • Querying available vocabulary subterms from a graphNEL object using getSubTerms.

When NOT to Use

  • For general package development tasks like linting or unit testing; use BiocCheck or devtools instead because biocViews focuses on repository HTML and vocabulary generation.
  • For searching Bioconductor packages interactively in a user-friendly GUI; use the Bioconductor website search or BiocPkgTools instead because biocViews generates static HTML views.

Data Requirements

  • A CRAN-style repository directory containing source packages (src/contrib) and binary packages (bin/windows/contrib, bin/macosx/contrib).
  • A vocabulary of terms defined in a dot format file (e.g., biocViewsVocab.dot) which is converted to a graphNEL object.

Key Parameters

  • reposRoot: The top-level directory path for the repository.
  • contribPaths: A named character vector specifying paths to source and binary packages.
  • reposUrl: The URL or file path of the repository to query.
  • topTerm: The top-level vocabulary node to query (e.g., "Software").
  • term: The base term for which all subterms should be returned in getSubTerms.
  • dir: Output directory path for generated HTML views in writeBiocViews.

Best Practices

  • Establish a standard CRAN-style layout with src/contrib and bin directories before running genReposControlFiles.
  • Extract vignettes using extractVignettes before generating the repository HTML.
  • Use getBiocSubViews with a valid graphNEL vocabulary object (like biocViewsVocab) to categorize packages.
  • Generate the final HTML views using writeBiocViews pointing to a dedicated output directory.

Common Pitfalls

  • Missing repository structure: Running genReposControlFiles without the correct contribPaths names. Fix: Ensure the contribPaths vector has exact names like "source", "win.binary", and "mac.binary".
  • Vocabulary terms with spaces: Adding terms to the dot file with spaces, which breaks the graph. Fix: Ensure terms use underscores instead of spaces.
  • Missing tools for vocabulary update: Failing to convert the dot file to GXL. Fix: Ensure dot2gxl from graphviz is installed and on your PATH.

Alternatives

  • BiocPkgTools: For advanced, user-facing exploration and network analysis of Bioconductor packages and their metadata.
  • BiocCheck: For verifying package compliance with Bioconductor standards, including biocViews validation.
  • pkgdown: For generating documentation websites for individual R packages rather than entire repositories.

Citations

  • Gentleman, R. et al. (2024). biocViews: Categorized views of R package repositories. R package version 1.74.0.

References

<!-- biomate-cta -->

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