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gt-cds - Add CDS (coding sequence) features to exon features given in GFF3 file.


gt cds [option ...] [GFF3_file]


-minorflen [value]
set the minimum length an open reading frame (ORF) must have to be added as a CDS
feature (measured in amino acids) (default: 64)

-startcodon [yes|no]
require than an ORF must begin with a start codon (default: no)

-finalstopcodon [yes|no]
require that the final ORF must end with a stop codon (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:

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)

-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)

display help and exit

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"


function mapping(sequence_region)
return "hs_ref_"..sequence_region..".fa.gz"

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.


Report bugs to <gt-users@genometools.org>.

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