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Man Pages


Manual Reference Pages  -  BLASTCLUST (1)

NAME

blastclust - BLAST score-based single-linkage clustering

CONTENTS

Synopsis
Description
Options
Author
See Also

SYNOPSIS

blastclust [-] [-C] [-L X] [-S X] [-W N] [-a N] [-b F] [-c filename] [-d filename] [-e F] [-i filename] [-l filename] [-o filename] [-p F] [-r filename] [-s filename] [-v [filename]]

DESCRIPTION

blastclust automatically and systematically clusters protein or DNA sequences based on pairwise matches found using the BLAST algorithm in case of proteins or Mega BLAST algorithm for DNA. In the latter case a single Mega BLAST search is performed for all the sequences combined against a database created from the same sequences. blastclust finds pairs of sequences that have statistically significant matches and clusters them using single-linkage clustering.

OPTIONS

A summary of options is included below.
- Print usage message
-C Complete unfinished clustering
-L X Length coverage threshold (default = 0.9)
-S X Score coverage threshold (bit score / length if < 3.0, percentage of identities otherwise; default = 1.75)
-W N Use words of size N (length of best perfect match; zero invokes default behavior: 3 for proteins, 32 for nucleotides)
-a N Number of CPU’s to use (default = 1)
-b F Do not require coverage on both neighbours
-c filename
  Read advanced options from configuration file filename
-d filename
  Input as a database
-e F Disable id parsing in database formatting
-i filename
  FASTA input file (program will format the database and remove files in the end; default = stdin)
-l filename
  Restrict reclustering to id list in filename
-o filename
  Output file for list of clusters (default = stdout)
-p F Input is nucleotides, not proteins.
-r filename
  Restore neighbors for reclustering from filename
-s filename
  Save all neighbours to filename
-v [filename]
  Print verbose progress messages (to filename)

AUTHOR

The National Center for Biotechnology Information.

SEE ALSO

blast(1), formatdb(1), blastclust.html, <http://www.ncbi.nlm.nih.gov/BLAST/>
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NCBI BLASTCLUST (1) 2004-06-25

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