a) Redid way to compute path metrics in indel error model. Paper formulation where we have an anchor point in the alignemt between read and haplotype won't work in practice except in nice data sets that are perfectly indel-realigned and that are well mapped by aligner. New formulation doesn't assume this, and it's actually simpler and uses less code. It now resembles more a classic SW dynamic programming formulation but it still preserves the HMM probabilistic formulation.
b) Added a programmable call threshold, set by command line.
c) Use now sample name from BAM file, remove -sampleName argument.
d) Simplify loop to compute read-haplotype likelihoods.
git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@4311 348d0f76-0448-11de-a6fe-93d51630548a
Ryan is using this to modify VCF code today...
git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@4303 348d0f76-0448-11de-a6fe-93d51630548a
Also added a new error message that I thought would be helpful...
git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@4301 348d0f76-0448-11de-a6fe-93d51630548a
The exception: "org.broadinstitute.sting.utils.exceptions.UserException$CommandLineException: Invalid command line: This calculation is critically dependent on being able to skip over known variant sites. Please provide a dbSNP ROD or a VCF file containing known sites of genetic variation."
git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@4293 348d0f76-0448-11de-a6fe-93d51630548a
*** Three integration tests had to change: ***
RecalibarationWalkersIntegrationTest:
One of the tests was using the interval as the snp track, and wasn't supplying a DbSNP track (for CountCovariates)
SequenomValidationConverterIntegrationTest:
relies on Plink ROD which we've removed.
PileupWalkerIntegrationTest:
we no longer have implicit interval tracks, so there isn't a rod name over the specified region. Otherwise the same result.
git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@4292 348d0f76-0448-11de-a6fe-93d51630548a
a) Turns out previous change of centering haplotype around indel was a bad idea. Context to the left of indel is important but not as important as right one, because by definition all alleles start at the same location, so haplotype is the same to the left of indel regardless of allele. So, go back to having a constant size window to the left of event.
b) Expand reference context so we can test larger haplotypes.
c) Optimize computation of read likelihoods by doing them in linear array instead of in a matrix - no difference in biallelic sites but could be significantly faster in multiallelic sites.
d) Bug fix: read alignment wasn't being computed correctly if, a) we were at an insertion, b) read started right at the insertion, c) read CIGAR didn't include insertion - more of these corner conditions are lurking, so a revamped computation of how reads align to candidate haplotypes is in the works.
e) Add debug option not to use prior haplotype likelihoods.
f) Don't hard-code NA12878 for genotyping, now sample name is a required input argument.
g) Bug fix: if there are no reads covering a candidate indel event, just output NO_CALL (didn't notice this in HiSeq, but in P1 data it happens all the time). I need to add a confidence threshold for calling later on.
git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@4291 348d0f76-0448-11de-a6fe-93d51630548a
This commit adds two important classes: Sample, which contains data about one sample; and SampleDataSource, which manages sample data a la ReferenceDataSource and ReadsDataSource.
This code should be stable, but it has not been integrated with existing walkers yet. That's the next commit.
In the meantime, feel free to experiment with the code - there are two basic example walkers in the playground.sample package. And PLEASE let me know if you see any errors/inconsistencies.
Note that this also adds a new dependency on SnakeYaml, a YAML parser.
git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@4285 348d0f76-0448-11de-a6fe-93d51630548a
in the reference. Reset routine is not accessible to any class outside
GenomeLocParser's package.
We'll have to do something more intelligent with this when the GATK goes
distributed.
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- Add a simple calculation model for Pr(R|H) that doesn't rely on Dindel's HMM model. MUCH faster, at a cost of slightly worse performance since we're more sensitive to bad reads coming from sequencing artifacts (add -simple to command line to activate).
- Add debug option to calculation model so that we can optionally output useful info on current read being evaluated. (add -debugout to commandline).
- Small performance improvement: instead of evaluating haplotype to the right of indel (just with a 5 base addition to the left), it seems better to center the indel and to add context evenly around event.
git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@4257 348d0f76-0448-11de-a6fe-93d51630548a
Turned it off by default and added a property to turn it back on.
git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@4254 348d0f76-0448-11de-a6fe-93d51630548a
delangel
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