Runs the velocity analysis on a BAM file, outputting a loom file.


ID: velocyto
Namespace: velocity

Example commands

You can run the pipeline using nextflow run.

View help

You can use --help as a parameter to get an overview of the possible parameters.

nextflow run openpipelines-bio/openpipeline \
  -r 0.12.6 -latest \
  -main-script target/nextflow/velocity/velocyto/ \

Run command

Example of params.yaml
# Arguments
input: # please fill in - example: "path/to/file"
transcriptome: # please fill in - example: "path/to/file"
# barcode: "path/to/file"
without_umi: false
# output: "$id.$key.output.output"
logic: "Default"

# Nextflow input-output arguments
publish_dir: # please fill in - example: "output/"
# param_list: "my_params.yaml"
nextflow run openpipelines-bio/openpipeline \
  -r 0.12.6 -latest \
  -profile docker \
  -main-script target/nextflow/velocity/velocyto/ \
  -params-file params.yaml

Replace -profile docker with -profile podman or -profile singularity depending on the desired backend.

Argument group


Name Description Attributes
--input Path to BAM file file, required
--transcriptome Path to GTF file file, required
--barcode Valid barcodes file, to filter the bam. If –bcfile is not specified all the cell barcodes will be included. Cell barcodes should be specified in the bcfile as the ‘CB’ tag for each read file
--without_umi foo boolean_true
--output Velocyto loom file file, required
--logic The logic to use for the filtering. string, default: "Default"


  • Robrecht Cannoodt (maintainer)