Bitmap (Apache SystemDS 3.2.0-SNAPSHOT API)

java.lang.Object
- org.apache.sysds.runtime.compress.bitmap.ABitmap
- - org.apache.sysds.runtime.compress.bitmap.Bitmap

```
public final class Bitmap
extends ABitmap
```
Uncompressed representation of one or more columns in bitmap format.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`getNumColumns()`	Get the number of columns encoded in this bitmap
`int`	`getNumNonZerosInOffset(int idx)`	Get the number of non zeros in a specific offset's tuple value.
`double[]`	`getValues()`	Get all values without unnecessary allocations and copies.

Methods inherited from class org.apache.sysds.runtime.compress.bitmap.ABitmap
containsZero, getNumOffsets, getNumOffsets, getNumValues, getNumZeros, getOffsetList, getOffsetsList, toString

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

- Method Detail
  - getValues
```
public final double[] getValues()
```
    Get all values without unnecessary allocations and copies.
    
    Returns:
    
    Dictionary of distinct values
  - getNumNonZerosInOffset
```
public final int getNumNonZerosInOffset(int idx)
```
    Description copied from class: ABitmap
    
    Get the number of non zeros in a specific offset's tuple value.
    
    Specified by:
    
    getNumNonZerosInOffset in class ABitmap
    
    Parameters:
    
    idx - The offset index to look at.
    
    Returns:
    
    The nnz in the tuple.
  - getNumColumns
```
public int getNumColumns()
```
    Description copied from class: ABitmap
    
    Get the number of columns encoded in this bitmap
    
    Specified by:
    
    getNumColumns in class ABitmap
    
    Returns:
    
    The column count