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bioconductor-biovizbase

The biovizBase package is designed to provide a set of utilities, color schemes and conventions for genomic data. It serves as the base for various high-level packages for biological data visualization. This saves development effort and enc

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biovizBase

Dependencies & Environment

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

  • Version: 1.60.0 · Bioconductor: 3.23 · R: ≥ 4.6
  • Imports: scales, Hmisc, RColorBrewer, dichromat, BiocGenerics, S4Vectors, IRanges, Seqinfo, GenomeInfoDb, GenomicRanges, SummarizedExperiment, Biostrings, Rsamtools, GenomicAlignments, GenomicFeatures, AnnotationDbi, VariantAnnotation, ensembldb, AnnotationFilter, rlang
  • System requirements: URL
  • Install: BiocManager::install("biovizBase")

When to Use

  • Generating colorblind-safe palettes for biological data visualization using colorBlindSafePal().
  • Retrieving standardized, biologically sensible color schemes for cytobands, strands, or nucleotides using getBioColor().
  • Manipulating GRanges objects for plotting by adding disjoint stepping levels (addStepping()) or shrinking gaps (shrinkageFun()).
  • Fetching chromosome ideograms from the UCSC genome browser using getIdeogram().

When NOT to Use

  • For high-level, out-of-the-box static genomic plotting, use ggbio because biovizBase only provides the low-level utilities and color schemes.
  • For interactive genomic graphics, use visnab because biovizBase is designed as a foundational infrastructure package rather than an interactive plotting tool.

Data Requirements

  • Input Format: GRanges objects (from the GenomicRanges package) for genomic manipulations, or character vectors of biological categories (e.g., "A", "C", "T", "G", "N") for color mapping.
  • Structure: Genomic coordinates must be properly formatted in GRanges to use utilities like addStepping(), maxGap(), or gaps().

Key Parameters

  • repeatable (TRUE): Controls whether to repeat colors if the required number exceeds the maximum colors allowed in colorBlindSafePal().
  • source ("default"): Specifies whether to retrieve colors from the default fixed settings or from the user's options in getBioColor().
  • extend.size (5): The size to extend ranges when adding stepping levels in addStepping().
  • max.gap (0): The maximum gap size allowed when shrinking gaps using shrinkageFun().
  • cytoband (TRUE): Logical indicating whether to include cytoband information when fetching an ideogram with getIdeogram().

Best Practices

  • Use getBioColor() instead of accessing options directly to hide internal complexity and ensure uniform color schemes across all graphics.
  • Check custom color palettes for colorblind safety using dichromat() to ensure accessibility for deuteranopia and protanopia.
  • Use plotColorLegend() or showColor() to visually verify your selected color schemes before applying them to complex genomic plots.

Common Pitfalls

  • Running out of colors in a palette: Requesting more colors than a specific colorblind-safe palette supports returns NA or errors. Fix: Set repeatable = TRUE when calling the function returned by colorBlindSafePal().
  • Inconsistent color themes across plots: Hardcoding colors leads to mismatched figures. Fix: Temporarily edit colors in the global options (options(biovizBase = opts)) so getBioColor() returns uniform colors globally.

Alternatives

  • ggbio: Built on top of biovizBase, use this for actual static genomic plotting rather than just base utilities.
  • visnab: Built on top of biovizBase, use this for interactive genomic graphics.
  • RColorBrewer: Provides general color palettes, but lacks the built-in biological category mappings (like nucleotides or cytobands) provided by biovizBase.
  • dichromat: Used for colorblindness simulation, but does not provide genomic-specific color generators out of the box.

Citations

  • Tengfei Yin, Michael Lawrence, Dianne Cook (2026). "An Introduction to biovizBase".

References

<!-- biomate-cta -->

Run this on BioMate

This skill is the knowledge layer — when, why, and how to use biovizbase. To run this analysis on your own data with managed compute, automated QC, and reproducible outputs, use BioMate — free to start.

▶ Open biovizbase on BioMate →

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