DOKK / manpages / debian 12 / malt / malt-run.1.en
MALT-RUN(1) User Commands MALT-RUN(1)

malt-run - Sequences aligner using MALT (MEGAN alignment tool)

SYNOPSIS

malt-run [options]

DESCRIPTION

Aligns sequences using MALT (MEGAN alignment tool)

OPTIONS

Mode:
Program mode. Mandatory option. Legal values: Unknown, BlastN, BlastP, BlastX, Classifier
Type of alignment to be performed. Default value: Local Legal values: Local, SemiGlobal
Input:
Input file(s) containing queries in FastA or FastQ format (gzip or zip ok). Mandatory option.
Index directory as generated by malt-build. Mandatory option.
Output:
Output RMA file(s) or directory or stdout.
Include unaligned queries in RMA output file. Default value: false.
Output alignment file(s) or directory or stdout.
Alignment output format. Default value: SAM Legal values: SAM, Tab, Text
Compress alignments using gzip. Default value: true.
Use soft clipping in SAM files (BlastN mode only). Default value: false.
Produce sparse SAM format (smaller, faster, but only suitable for MEGAN). Default value: false.
Aligned reads output file(s) or directory or stdout.
Compress aligned reads output using gzip. Default value: true.
Unaligned reads output file(s) or directory or stdout.
Compress unaligned reads output using gzip. Default value: true.
Performance:
Number of worker threads. Default value: 4.
Memory mode. Default value: load Legal values: load, page, map
Set the maximum number of seed tables to use (0=all). Default value: 0.
Cache results for replicated queries. Default value: false.
Filter:
Minimum bit score. Default value: 50.0.
Maximum expected score. Default value: 1.0.
Minimum percent identity. Default value: 0.0.
Maximum number of alignments per query. Default value: 25.
Maximum number of (non-overlapping) alignments per reference. Default value: 1.
BlastN parameters:
Match score. Default value: 2.
Mismatch score. Default value: -3.
Parameter Lambda for BLASTN statistics. Default value: 0.625.
Parameter K for BLASTN statistics. Default value: 0.41.
BlastP and BlastX parameters:
Protein substitution matrix to use. Default value: BLOSUM62 Legal values: BLOSUM45, BLOSUM50, BLOSUM62, BLOSUM80, BLOSUM90
DNA query parameters:
Align query forward strand only. Default value: false.
Align query reverse strand only. Default value: false.
LCA parameters:
Top percent value for LCA algorithm. Default value: 10.0.
Min support value for LCA algorithm as a percent of assigned reads (0==off). Default value: 0.001.
Min support value for LCA algorithm (overrides --minSupportPercent). Default value: 0.
Min percent identity used by LCA algorithm. Default value: 0.0.
Use percent identity assignment filter. Default value: false.
Use the weighted LCA for taxonomic assignment. Default value: false.
Set the percent for the LCA to cover. Default value: 100.0.
Reads have magnitudes (to be used in taxonomic or functional analysis). Default value: false.
File of contaminant taxa (one Id or name per line).
Heuristics:
Maximum number of seed matches per offset per read frame. Default value: 100.
Maximum number of seed matches per read and reference. Default value: 20.
Seed shift. Default value: 1.
Banded alignment parameters:
Gap open penalty. Default value: 11.
Gap extension penalty. Default value: 1.
Band width/2 for banded alignment. Default value: 4.
Other:
Bits used for caching replicate queries (size is then 2^bits). Default value: 20.
Show part of the table in human readable form for debugging. Default value: false.
Echo commandline options and be verbose. Default value: false.
Show program usage and quit.

Daniel H. Huson.

malt-build(1)

January 2022 malt-run