Torrent Browser User Interface Guide


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TMAP map1 Options

This page describes the parameters for the TMAP map1 module. The map1 module implements BWA-short reads mapping and has these characteristics:

  • map1 is very fast at finding perfect matches
  • map1 is very slow at finding a set of matches with up to two mismatches



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The map1 module is not the current default for TMAP.

Options supported with the TMAP map1 module(all are optional):

--seed-length INT 32 The k-mer length to seed CALs (-1 to disable)
--seed-max-diff INT 2 The maximum number of edits in the seed
--seed2-length INT 48 The secondary seed length (-1 to disable)
--max-diff NUM 0.04 The maximum number of edits or false-negative probability assuming the maximum error rate
--max-error-rate FLOAT 0.02 The assumed per-base maximum error rate
--max-mismatches NUM 3 The maximum number of or (read length) fraction of mismatches
--max-gap-opens NUM 1 The maximum number of or (read length) fraction of indel starts
--max-gap-extensions NUM 6 The maximum number of or (read length) fraction of indel extensions
--max-cals-deletion INT 10 The maximum number of CALs to extend a deletion
--indel-ends-bound INT 5 The number of bps from the end of the read
--max-best-cals INT 32 Optimal CALs have been found
--max-nodes INT 2000000 The maximum number of alignment nodes
--min-seq-length INT -1 The minimum sequence length to examine (-1 to disable)
--max-seq-length INT -1 Themaximum sequence length to examine (-1 to disable)
Option
Type
Default
Description