AlleleBalanceFilter (picard 2.18.2 API)

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java.lang.Object
- picard.vcf.filter.AlleleBalanceFilter

All Implemented Interfaces:

VariantFilter
```
public class AlleleBalanceFilter
extends Object
implements VariantFilter
```
Filters out a record if the allele balance for heterozygotes is out of a defined range across all samples. The threshold is set as the minimum fraction of the data drawn from the less-represented allele - e.g. 0.3 would set that whichever allele has lower representation across all heterozygous individuals must account for at least 30% of the total observations.

Field Summary

Fields
Modifier and Type Field Description

static String AB_FILTER
The filter string used for sites that fail the allele balance filter.

Constructor Summary

Constructors
Constructor Description

AlleleBalanceFilter(double hetAlleleBalance)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`String`	`filter(htsjdk.variant.variantcontext.VariantContext ctx)`	Check to see if the VariantContext should have a filter applied to it.
`List<htsjdk.variant.vcf.VCFFilterHeaderLine>`	`headerLines()`	Return VCF header lines that define filters that may be applied by the VariantFilter.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - AB_FILTER
```
public static final String AB_FILTER
```
    The filter string used for sites that fail the allele balance filter.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - AlleleBalanceFilter
```
public AlleleBalanceFilter(double hetAlleleBalance)
```
- Method Detail
  - headerLines
```
public List<htsjdk.variant.vcf.VCFFilterHeaderLine> headerLines()
```
    Description copied from interface: VariantFilter
    
    Return VCF header lines that define filters that may be applied by the VariantFilter.
    
    Specified by:
    
    headerLines in interface VariantFilter
  - filter
```
public String filter(htsjdk.variant.variantcontext.VariantContext ctx)
```
    Description copied from interface: VariantFilter
    
    Check to see if the VariantContext should have a filter applied to it. If so return the filter string, otherwise return null.
    
    Specified by:
    
    filter in interface VariantFilter

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