CodedSteps

java.lang.Object
- imp.CodedSteps

```
public class CodedSteps
extends java.lang.Object
```
Class CodedSteps divides phased genotype data into non-overlapping intervals (the steps), indexes the unique allele sequences in each interval, and stores a map of haplotype index to allele sequence index for each interval.

Constructor Summary

Constructors
Constructor Description

CodedSteps(ImpData impData)
Constructs a new CodedSteps instance from the specified data.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`IndexArray`	`get(int step)`	Returns a map from haplotype index to allele sequence index for the specified step
`ImpData`	`impData()`	Return the input data for genotype imputation used to construct `this`.
`int`	`nSteps()`	Returns the number of steps.
`int`	`stepStart(int step)`	Returns the first marker index in the specified step.

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

- Constructor Detail
  - CodedSteps
```
public CodedSteps(ImpData impData)
```
    Constructs a new CodedSteps instance from the specified data.
    
    Parameters:
    
    impData - input data for genotype imputation
    
    Throws:
    
    java.lang.NullPointerException - if impData == null
- Method Detail
  - impData
```
public ImpData impData()
```
    Return the input data for genotype imputation used to construct this.
    
    Returns:
    
    the input data for genotype imputation used to construct this
  - nSteps
```
public int nSteps()
```
    Returns the number of steps.
    
    Returns:
    
    the number of steps
  - stepStart
```
public int stepStart(int step)
```
    Returns the first marker index in the specified step.
    
    Parameters:
    
    step - a step index
    
    Returns:
    
    the first marker index in the specified step
    
    Throws:
    
    java.lang.IllegalArgumentException - if step < 0 || step >= this.nSteps()
  - get
```
public IndexArray get(int step)
```
    Returns a map from haplotype index to allele sequence index for the specified step
    
    Parameters:
    
    step - a step index
    
    Returns:
    
    a map from haplotype index to allele sequence index for the specified step
    
    Throws:
    
    java.lang.IllegalArgumentException - if step < 0 || step >= this.nSteps()