示例#1
0
void junctions_from_alignment(const BowtieHit& spliced_alignment,
			      JunctionSet& junctions)
{
  vector<pair<Junction, JunctionStats> > juncs;
  junctions_from_spliced_hit(spliced_alignment, juncs);

  for (size_t i = 0; i < juncs.size(); ++i)
    {
      pair<Junction, JunctionStats>& junc = juncs[i];
      JunctionSet::iterator itr = junctions.find(junc.first);
      
      if (itr != junctions.end())
	{
	  JunctionStats& j = itr->second;
	  j.left_extent = max(j.left_extent, junc.second.left_extent);
	  j.right_extent = max(j.right_extent, junc.second.right_extent);
	  j.min_splice_mms = min(j.min_splice_mms, junc.second.min_splice_mms);
	  j.supporting_hits++;
	}
      else
	{
	  assert(junc.first.refid != 0xFFFFFFFF);
	  junctions[junc.first] = junc.second;
	}
    }
}
示例#2
0
/**
 * Parse the cigar string of a BowtieHit in order to determine the alignment status.
 */
AlignStatus::AlignStatus(const BowtieHit& bh, const JunctionSet& gtf_junctions)
{
  const vector<CigarOp>& cigar = bh.cigar();
  _aligned = cigar.size() > 0;
  _indelFreeAlignment = true;
  _unannotatedSpliceFreeAlignment = true;
  _edit_dist = bh.edit_dist();
  int j = bh.left();
  for (size_t c = 0 ; c < cigar.size(); ++c)
    {
      Junction junc;
      switch(cigar[c].opcode)
	{
	case REF_SKIP:
	  junc.refid = bh.ref_id();
	  junc.left = j;
	  junc.right = junc.left + cigar[c].length;
	  junc.antisense = bh.antisense_splice();
	  j += cigar[c].length;

	  if (gtf_junctions.find(junc) == gtf_junctions.end())
	    _unannotatedSpliceFreeAlignment = false;
	  break;	  
	case MATCH:
	  j += cigar[c].length;
	  break;
	case DEL:
	  j += cigar[c].length;
	  _indelFreeAlignment = false;
	  break;
	case INS:
	  _indelFreeAlignment = false;
	  break;
	default:
	  break;
	}
    }
}