CentroidIndex (LIMES Core Library 1.8.2 API)

java.lang.Object
- org.aksw.limes.core.measures.mapper.pointsets.PolygonIndex
- - org.aksw.limes.core.measures.measure.pointsets.hausdorff.CentroidIndex

```
public class CentroidIndex
extends PolygonIndex
```
Adds the distance from the centroids, which are in the middle of the longest axis. Also stores the radius of the smallest circle which contains the polygon entirely

Author:

Axel-C. Ngonga Ngomo (ngonga@informatik.uni-leipzig.de)

Nested Class Summary

Nested Classes
Modifier and Type Class Description

class CentroidIndex.Circle

Field Summary

Fields
Modifier and Type Field Description

Map<String,CentroidIndex.Circle> centroids

static boolean USE_GREAT_ELLIPTIC_DISTANCE
- Fields inherited from class org.aksw.limes.core.measures.mapper.pointsets.PolygonIndex
  computations, distanceIndex, polygonIndex

Constructor Summary

Constructors
Constructor Description

CentroidIndex()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Point`	`average(Point source, Point target)`
`double`	`distance(Point x, Point y)`
`void`	`index(Polygon p)`	Indexes the distances between the points in a given polygon and adds polygon to list of indexes

Methods inherited from class org.aksw.limes.core.measures.mapper.pointsets.PolygonIndex
getDistance, index, toString

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

- Field Detail
  - USE_GREAT_ELLIPTIC_DISTANCE
```
public static boolean USE_GREAT_ELLIPTIC_DISTANCE
```
  - centroids
```
public Map<String,CentroidIndex.Circle> centroids
```
- Constructor Detail
  - CentroidIndex
```
public CentroidIndex()
```
- Method Detail
  - distance
```
public double distance(Point x,
                       Point y)
```
    Parameters:
    
    x - Point x
    
    y - Point y
    
    Returns:
    
    Distance between x and y
  - index
```
public void index(Polygon p)
```
    Description copied from class: PolygonIndex
    
    Indexes the distances between the points in a given polygon and adds polygon to list of indexes
    
    Overrides:
    
    index in class PolygonIndex
    
    Parameters:
    
    p - Input polygon
  - average
```
public Point average(Point source,
                     Point target)
```