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GT-EXTRACTFEAT(1) GenomeTools Manual GT-EXTRACTFEAT(1)

NAME

gt-extractfeat - Extract features given in GFF3 file from sequence file.

SYNOPSIS

gt extractfeat [option ...] [GFF3_file]

DESCRIPTION

-type [string]
set type of features to extract (default: undefined)
-join [yes|no]
join feature sequences in the same subgraph into a single one (default: no)
-translate [yes|no]
translate the features (of a DNA sequence) into protein (default: no)
-seqid [yes|no]
add sequence ID of extracted features to FASTA descriptions (default: no)
-target [yes|no]
add target ID(s) of extracted features to FASTA descriptions (default: no)
-retainids [yes|no]
use ID attributes of extracted features as FASTA descriptions (default: no)
-seqfile [filename]
set the sequence file from which to take the sequences (default: undefined)
-encseq [filename]
set the encoded sequence indexname from which to take the sequences (default: undefined)
-seqfiles
set the sequence files from which to extract the features use -- to terminate the list of sequence files
-matchdesc [yes|no]
search the sequence descriptions from the input files for the desired sequence IDs (in GFF3), reporting the first match (default: no)
-matchdescstart [yes|no]
exactly match the sequence descriptions from the input files for the desired sequence IDs (in GFF3) from the beginning to the first whitespace (default: no)
-usedesc [yes|no]
use sequence descriptions to map the sequence IDs (in GFF3) to actual sequence entries. If a description contains a sequence range (e.g., III:1000001..2000000), the first part is used as sequence ID ( III) and the first range position as offset ( 1000001) (default: no)
-regionmapping [string]
set file containing sequence-region to sequence file mapping (default: undefined)
-v [yes|no]
be verbose (default: no)
-width [value]
set output width for FASTA sequence printing (0 disables formatting) (default: 0)
-o [filename]
redirect output to specified file (default: undefined)
-gzip [yes|no]
write gzip compressed output file (default: no)
-bzip2 [yes|no]
write bzip2 compressed output file (default: no)
-force [yes|no]
force writing to output file (default: no)
-help
display help and exit
-version
display version information and exit
File format for option -regionmapping:
The file supplied to option -regionmapping defines a “mapping”. A mapping maps the sequence-region entries given in the GFF3_file to a sequence file containing the corresponding sequence. Mappings can be defined in one of the following two forms: 
mapping = {
  chr1  = "hs_ref_chr1.fa.gz",
  chr2  = "hs_ref_chr2.fa.gz"
}
or 
function mapping(sequence_region)
  return "hs_ref_"..sequence_region..".fa.gz"
end
The first form defines a Lua (http://www.lua.org) table named “mapping” which maps each sequence region to the corresponding sequence file. The second one defines a Lua function “mapping”, which has to return the sequence file name when it is called with the sequence_region as argument.

REPORTING BUGS

Report bugs to <gt-users@genometools.org>.
09/05/2014 GenomeTools 1.5.3