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OK, we finally ran into a messy dataset where we can not find a place to shift the window to: there's an indel at every position. Don't panick, don't throw an exception, just ignore the whole window completely, we do not want to call there. 

git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@2779 348d0f76-0448-11de-a6fe-93d51630548a
This commit is contained in:
asivache 2010-02-04 19:49:56 +00:00
parent 152f65b362
commit e7b710791f
1 changed files with 38 additions and 11 deletions
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49
java/src/org/broadinstitute/sting/gatk/walkers/indels/IndelGenotyperV2Walker.java
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@ -282,10 +282,16 @@ public class IndelGenotyperV2Walker extends ReadWalker<Integer,Integer> {
*/
private void emit(long position, boolean force) {
position = adjustPosition(position);
long move_to = position;
long adjustedPosition = adjustPosition(position);
for ( long pos = normal_context.getStart() ; pos < Math.min(position,normal_context.getStop()+1) ; pos++ ) {
if ( adjustedPosition == -1 ) {
// failed to find appropriate shift position, the data are probably to messy anyway so we drop them altogether
normal_context.shift((int)(position-normal_context.getStart()));
return;
}
long move_to = adjustedPosition;
for ( long pos = normal_context.getStart() ; pos < Math.min(adjustedPosition,normal_context.getStop()+1) ; pos++ ) {
if ( normal_context.indelsAt(pos).size() == 0 ) continue; // no indels
@ -303,12 +309,17 @@ public class IndelGenotyperV2Walker extends ReadWalker<Integer,Integer> {
long left = Math.max( pos-NQS_WIDTH, normal_context.getStart() );
long right = pos+normalCall.getVariant().lengthOnRef()+NQS_WIDTH-1;
if ( right >= position && ! force) {
if ( right >= adjustedPosition && ! force) {
// we are not asked to force-shift, and there is more coverage around the current indel that we still need to collect
// we are not asked to force-shift, and there's still additional coverage to the right of current indel, so its too early to emit it;
// instead we shift only up to current indel pos - MISMATCH_WIDTH, so that we could keep collecting that coverage
move_to = adjustPosition(left);
if ( move_to == -1 ) {
// failed to find appropriate shift position, the data are probably to messy anyway so we drop them altogether
normal_context.shift((int)(adjustedPosition-normal_context.getStart()));
return;
}
if ( DEBUG ) System.out.println("DEBUG>> waiting for coverage; actual shift performed to "+ move_to);
break;
}
@ -355,7 +366,7 @@ public class IndelGenotyperV2Walker extends ReadWalker<Integer,Integer> {
// }
}
if ( DEBUG ) System.out.println("DEBUG>> Actual shift to " + move_to + " ("+position+")");
if ( DEBUG ) System.out.println("DEBUG>> Actual shift to " + move_to + " ("+adjustedPosition+")");
normal_context.shift((int)(move_to - normal_context.getStart() ) );
}
@ -403,7 +414,11 @@ public class IndelGenotyperV2Walker extends ReadWalker<Integer,Integer> {
request--;
if ( DEBUG ) System.out.println("DEBUG>> indel observations present within "+NQS_WIDTH+" bases ahead. Resetting shift to "+request);
attempts++;
if ( attempts == 50 ) throw new StingException("Indel at every position in the interval ["+request+", "+initial_request+"]. Can not find a break to shift context window to");
if ( attempts == 50 ) {
System.out.println("WARNING: Indel at every position in the interval "+refName+":"+request+"-"+initial_request+
". Can not find a break to shift context window to; no calls will be attempted in the current window.");
return -1;
}
}
}
if ( DEBUG ) System.out.println("DEBUG>> Found acceptable target position "+request);
@ -418,10 +433,16 @@ public class IndelGenotyperV2Walker extends ReadWalker<Integer,Integer> {
*/
private void emit_somatic(long position, boolean force) {
position = adjustPosition(position);
long move_to = position;
long adjustedPosition = adjustPosition(position);
if ( adjustedPosition == -1 ) {
// failed to find appropriate shift position, the data are probably to messy anyway so we drop them altogether
normal_context.shift((int)(position-normal_context.getStart()));
tumor_context.shift((int)(position-tumor_context.getStart()));
return;
}
long move_to = adjustedPosition;
for ( long pos = tumor_context.getStart() ; pos < Math.min(position,tumor_context.getStop()+1) ; pos++ ) {
for ( long pos = tumor_context.getStart() ; pos < Math.min(adjustedPosition,tumor_context.getStop()+1) ; pos++ ) {
if ( tumor_context.indelsAt(pos).size() == 0 ) continue; // no indels in tumor
@ -446,12 +467,18 @@ public class IndelGenotyperV2Walker extends ReadWalker<Integer,Integer> {
long left = Math.max( pos-NQS_WIDTH, tumor_context.getStart() );
long right = pos+tumorCall.getVariant().lengthOnRef()+NQS_WIDTH-1;
if ( right >= position && ! force) {
if ( right >= adjustedPosition && ! force) {
// we are not asked to force-shift, and there is more coverage around the current indel that we still need to collect
// we are not asked to force-shift, and there's still additional coverage to the right of current indel, so its too early to emit it;
// instead we shift only up to current indel pos - MISMATCH_WIDTH, so that we could keep collecting that coverage
move_to = adjustPosition(left);
if ( move_to == -1 ) {
// failed to find appropriate shift position, the data are probably to messy anyway so we drop them altogether
normal_context.shift((int)(adjustedPosition-normal_context.getStart()));
tumor_context.shift((int)(adjustedPosition-tumor_context.getStart()));
return;
}
if ( DEBUG ) System.out.println("DEBUG>> waiting for coverage; actual shift performed to "+ move_to);
break;
}
@ -516,7 +543,7 @@ public class IndelGenotyperV2Walker extends ReadWalker<Integer,Integer> {
// }
}
if ( DEBUG ) System.out.println("DEBUG>> Actual shift to " + move_to + " ("+position+")");
if ( DEBUG ) System.out.println("DEBUG>> Actual shift to " + move_to + " ("+adjustedPosition+")");
tumor_context.shift((int)(move_to - tumor_context.getStart() ) );
normal_context.shift((int)(move_to - normal_context.getStart() ) );
}