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This is the development version of velociraptor; for the stable release version, see velociraptor.

Toolkit for Single-Cell Velocity

Bioconductor version: Development (3.19)

This package provides Bioconductor-friendly wrappers for RNA velocity calculations in single-cell RNA-seq data. We use the basilisk package to manage Conda environments, and the zellkonverter package to convert data structures between SingleCellExperiment (R) and AnnData (Python). The information produced by the velocity methods is stored in the various components of the SingleCellExperiment class.

Author: Kevin Rue-Albrecht [aut, cre] , Aaron Lun [aut] , Charlotte Soneson [aut] , Michael Stadler [aut]

Maintainer: Kevin Rue-Albrecht <kevinrue67 at gmail.com>

Citation (from within R, enter citation("velociraptor")):


To install this package, start R (version "4.4") and enter:

if (!require("BiocManager", quietly = TRUE))

# The following initializes usage of Bioc devel


For older versions of R, please refer to the appropriate Bioconductor release.


To view documentation for the version of this package installed in your system, start R and enter:

User's guide HTML R Script
Reference Manual PDF


biocViews Coverage, GeneExpression, Sequencing, SingleCell, Software
Version 1.13.1
In Bioconductor since BioC 3.12 (R-4.0) (3.5 years)
License MIT + file LICENSE
Depends SummarizedExperiment
Imports methods, stats, Matrix, BiocGenerics, reticulate, S4Vectors, DelayedArray, basilisk, zellkonverter, scuttle, SingleCellExperiment, BiocParallel, BiocSingular
System Requirements
URL https://github.com/kevinrue/velociraptor
Bug Reports https://github.com/kevinrue/velociraptor/issues
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Suggests BiocStyle, testthat, knitr, rmarkdown, pkgdown, scran, scater, scRNAseq, Rtsne, graphics, grDevices, ggplot2, cowplot, GGally, patchwork, metR
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Package Archives

Follow Installation instructions to use this package in your R session.

Source Package velociraptor_1.13.1.tar.gz
Windows Binary velociraptor_1.13.1.zip (64-bit only)
macOS Binary (x86_64) velociraptor_1.13.1.tgz
macOS Binary (arm64)
Source Repository git clone https://git.bioconductor.org/packages/velociraptor
Source Repository (Developer Access) git clone git@git.bioconductor.org:packages/velociraptor
Bioc Package Browser https://code.bioconductor.org/browse/velociraptor/
Package Short Url https://bioconductor.org/packages/velociraptor/
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