Define where the pipeline should find input data and save output data.

Path to comma-separated file containing information about the samples in the experiment.

required
type: string
pattern: ^\S+\.csv$

You will need to create a design file with information about the reference genomes you wish to build into a metagenomic profiling database. Use this parameter to specify its location. It has to be a comma-separated file with 4 columns, and a header row. See usage docs.

The output directory where the results will be saved. You have to use absolute paths to storage on Cloud infrastructure.

required
type: string

Email address for completion summary.

type: string
pattern: ^([a-zA-Z0-9_\-\.]+)@([a-zA-Z0-9_\-\.]+)\.([a-zA-Z]{2,5})$

Set this parameter to your e-mail address to get a summary e-mail with details of the run sent to you when the workflow exits. If set in your user config file (~/.nextflow/config) then you don't need to specify this on the command line for every run.

MultiQC report title. Printed as page header, used for filename if not otherwise specified.

type: string

Specify name that resulting databases will be prefixed with.

required
type: string

NCBI-style four-column accession to taxonomy ID map file

type: string

An NCBI four column file tab-separated file with accession, accession.version, taxid and gi number. The first refers to an accession ID in each FASTA entry header. The second refers to the accession ID but with the accession version number appended to the end (e.g. .1). The third refers to the taxonomy ID of the organism the sequence belongs to, as listed in nodes.dmp. The fourth refers to the old-style NCBI gi number of the sequence.

If building with typical NCBI data, the most typical file is the nucl_gb.accession2taxid file from the [NCBI taxonomy FTP server](https://ftp.ncbi.nlm.nih.gov/pub/taxonomy/accession2taxid/.

Two column protein sequence accession ID to taxonomy map file.

type: string

A two column file tab-separated file with accession.version and taxid. The first refers to an accession ID in each FASTA entry header. The second refers to the taxonomy ID of the organism the sequence belongs to, as listed in nodes.dmp.

Two column nucleotide sequence accession ID to taxonomy map file.

type: string

A two column file tab-separated file with accession.version and taxid. The first refers to an accession ID in each FASTA entry header. The second refers to the taxonomy ID of the organism the sequence belongs to, as listed in nodes.dmp.

Path to NCBI-style taxonomy node dmp file.

type: string

A tab/pipe/tab separated table file. See nodes.dmp section of NCBI taxdump README for column file structure.

Path to NCBI-style taxonomy names dmp file.

type: string

A tab/pipe/tab separated table file. See names.dmp section of NCBI taxdump README for column file structure.

Path to MEGAN6/MALT mapping db file

type: string

A mapping DB file containing taxonomy information for building MALT databases. This file can be downloaded from the MEGAN6 website. Can be zipped (the pipeline will unzip this for you if necessary). Typically the megan-nucl-Feb2022.db.zip is used with MALT.

Save concatenated input FASTAs

type: boolean

Some tools require a single input FASTA of all reference genomes. The pipeline will do this concatenation for you, and by supplying this flag you can save the resulting single fasta for you in the results directory under cat/.

Turn on extending of Kraken2 database to include Bracken files. Requires nucleotide FASTA File input.

type: boolean

Bracken2 databases are simply just a Kraken2 database with two additional files.

Note however this requires a Kraken2 database with intermediate files still in it, thus can result in large database directories.

Turn on building of Centrifuge database. Requires nucleotide FASTA file input.

type: boolean

Turn on building of DIAMOND database. Requires amino-acid FASTA file input.

type: boolean

Turn on building of Kaiju database. Requires amino-acid FASTA file input.

type: boolean

Turn on building of MALT database. Requires nucleotide FASTA file input.

type: boolean

Specify type of input sequence being given to MALT

type: string

Use to specify whether the reference sequences are DNA or Protein sequences. (For RNA sequences, use the DNA setting) - from MALT manual.

Modifies tool(s) parameter(s)

  • malt-build: --sequenceType

Turn on building of Kraken2 database. Requires nucleotide FASTA file input.

type: boolean

Retain intermediate Kraken2 build files for inspection.

type: boolean

Turn on building of KrakenUniq database. Requires nucleotide FASTA file input.

type: boolean

Parameters used to describe centralised config profiles. These should not be edited.

Git commit id for Institutional configs.

hidden
type: string
default: master

Base directory for Institutional configs.

hidden
type: string
default: https://raw.githubusercontent.com/nf-core/configs/master

If you're running offline, Nextflow will not be able to fetch the institutional config files from the internet. If you don't need them, then this is not a problem. If you do need them, you should download the files from the repo and tell Nextflow where to find them with this parameter.

Institutional config name.

hidden
type: string

Institutional config description.

hidden
type: string

Institutional config contact information.

hidden
type: string

Institutional config URL link.

hidden
type: string

Less common options for the pipeline, typically set in a config file.

Display version and exit.

hidden
type: boolean

Method used to save pipeline results to output directory.

hidden
type: string

The Nextflow publishDir option specifies which intermediate files should be saved to the output directory. This option tells the pipeline what method should be used to move these files. See Nextflow docs for details.

Email address for completion summary, only when pipeline fails.

hidden
type: string
pattern: ^([a-zA-Z0-9_\-\.]+)@([a-zA-Z0-9_\-\.]+)\.([a-zA-Z]{2,5})$

An email address to send a summary email to when the pipeline is completed - ONLY sent if the pipeline does not exit successfully.

Send plain-text email instead of HTML.

hidden
type: boolean

File size limit when attaching MultiQC reports to summary emails.

hidden
type: string
default: 25.MB
pattern: ^\d+(\.\d+)?\.?\s*(K|M|G|T)?B$

Do not use coloured log outputs.

hidden
type: boolean

Incoming hook URL for messaging service

hidden
type: string

Incoming hook URL for messaging service. Currently, MS Teams and Slack are supported.

Custom config file to supply to MultiQC.

hidden
type: string

Custom logo file to supply to MultiQC. File name must also be set in the MultiQC config file

hidden
type: string

Custom MultiQC yaml file containing HTML including a methods description.

type: string

Boolean whether to validate parameters against the schema at runtime

hidden
type: boolean
default: true

Base URL or local path to location of pipeline test dataset files

hidden
type: string
default: https://raw.githubusercontent.com/nf-core/test-datasets/