Bio::Graphics Util
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Summary
Bio::Graphics::Util - non-object-oriented utilities used in Bio::Graphics modules
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Included modules
Bio::Root::Version
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Methods
frame_and_offset
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Code
Methods description
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Methods code
frame_and_offsetdescriptionprevnextTop
sub frame_and_offset {
  my ($pos,$strand,$phase) = @_;
  $strand ||= +1;
  $phase  ||= 0;
  my $codon_start =  $strand >= 0
                   ? $pos + $phase
	           : $pos - $phase;  # probably wrong
  my $frame  = ($codon_start-1) % 3;
#  my $frame = $strand >= 0
#    ? ($pos - $phase - 1) % 3
#    : (1 - $pos - $phase) % 3;
  my $offset = $strand >= 0 ? $phase : -$phase;
  return wantarray ? ($frame,$offset) : $frame;
}
General documentation
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