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Download indexes required for MetaScope ID and MetaBlast modules

Source: R/download_accessions.R
download_accessions.Rd

This is a necessary step for all samples utilizing NCBI and SILVA databases in the MetaScope pipeline. As specified by the user, download_accessions will automatically download the NCBI accessions database, the SILVA taxonomy database, and or the NCBI Blast 16S database and prepare consolidated databases for downstream use with the MetaID and MetaBLAST modules. This package relies on the taxonomizr package.

Usage

download_accessions(
  ind_dir,
  tmp_dir = file.path(ind_dir, "tmp"),
  remove_tmp_dir = TRUE,
  NCBI_accessions_database = TRUE,
  NCBI_accessions_name = "accessionTaxa",
  silva_taxonomy_database = TRUE,
  silva_taxonomy_name = "all_silva_headers"
)

Arguments

ind_dir

Character string. Directory filepath where indices should be saved. Required.

tmp_dir

Character path to directory for storing temp files. (Useful to avoid redownloading) Defaults to file.path(ind_dir, "tmp")

remove_tmp_dir

Delete tmp_dir after downloads are complete? Defaults to TRUE

NCBI_accessions_database

Logical. Download taxonomizr NCBI accessions database? Defaults to TRUE.

NCBI_accessions_name

Character string. Filename (with or without extension) to save taxonomizr NCBI accessions database. Defaults to "accessionTaxa.sql".

silva_taxonomy_database

Logical. Download SILVA taxonomy database? Defaults to TRUE.

silva_taxonomy_name

Character string. Filename (with or without extension) to save SILVA taxonomy database. Defaults to the file supplied with the package, "all_silva_headers.rds".

Value

Exports database(s) with names and to location specified by the user.

Examples

if (FALSE) { # \dontrun{
  download_accessions(
    ind_dir = "C:/Users/JohnSmith/Research",
    tmp_dir = file.path(ind_dir, "tmp"),
    remove_tmp_dir = TRUE,
    NCBI_accessions_database = TRUE,
    NCBI_accessions_name = "accessionTaxa.sql",
    silva_taxonomy_database = TRUE,
    silva_taxonomy_name = "all_silva_headers.rds")
} # }