NAME
sspace - SSPACE-basic scaffolding tool
SYNOPSIS
sspace [options] -l [libraryfilename] -s [contigfilename]
DESCRIPTION
SSPACE is a script able to extend and scaffold pre-assembled contigs using one or more mate pairs or paired-end libraries, or even a combination.
Please read the README file at /usr/share/doc/sspace/README.gz for more information.
OPTIONS
General Parameters
- -l
-
Library file containing two paired read files with insert size, error and either mate pair or paired end indication (REQUIRED)
- -s
-
FASTA file containing contig sequences used for extension. Inserted pairs are mapped to extended and non-extended contigs (REQUIRED)
- -x
-
Indicate whether to extend the contigs of -s using paired reads in -l (-x 1=extension, -x 0=no extension, default -x 0)
Extension Parameters
- -m
-
Minimum number of overlapping bases with the seed/contig during overhang consensus build up (default -m 32)
- -o
-
Minimum number of reads needed to call a base during an extension (default -o 20)
- -t
-
Trim up to -t base(s) on the contig end when all possibilities have been exhausted for an extension (default -t 0)
- -u
-
FASTA/FASTQ file containing unpaired sequence reads (optional)
- -r
-
Minimum base ratio used to accept a overhang consensus base (default -r 0.9)
Scaffolding Parameters
- -z
-
Minimum contig length used for scaffolding. Filters out contigs below this value (default -z 0)
- -k
-
Minimum number of links (read pairs) to compute scaffold (default -k 5)
- -a
-
Maximum link ratio between two best contig pairs. Higher values lead to least accurate scaffolding (default -a 0.7)
- -n
-
Minimum overlap required between contigs to merge adjacent contigs in a scaffold (default -n 15)
Bowtie Parameters
- -g
-
Maximum number of allowed gaps during mapping with Bowtie. Corresponds to the -v option in Bowtie. Higher number of allowed gaps can lead to least accurate scaffolding. (default -g 0)
- -T
-
Specify the number of threads in Bowtie. Corresponds to the -p/--threads option in Bowtie (default -T 1)
Additional Parameters
- -b
-
Base name for your output files (default -b standard_output)
- -v
-
Runs in verbose mode (-v 1=yes, -v 0=no, default -v 0)
- -p
-
Make .dot file for visualisation (-p 1=yes, -p 0=no, default -p 0)
AUTHORS
Marten Boetzer, Walter Pirovano, Nicola Soranzo