PolygonIndex (LIMES Core Library 1.8.2 API)

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

Direct Known Subclasses:

CentroidIndex
```
public class PolygonIndex
extends Object
```
Author:

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

Field Summary

Fields
Modifier and Type Field Description

int computations

Map<String,Map<Point,Map<Point,Double>>> distanceIndex

Map<String,Polygon> polygonIndex

Constructor Summary

Constructors
Constructor Description

PolygonIndex()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`double`	`getDistance(String uri, Point x, Point y)`	Returns the distances between two points x and y from the polygon with label uri Returns -1 if nothing is found
`void`	`index(Set<Polygon> polygons)`	Indexes a list of polygons by mapping the uri of each polygon to the corresponding distanceIndex
`void`	`index(Polygon p)`	Indexes the distances between the points in a given polygon and adds polygon to list of indexes
`String`	`toString()`	String representation of the polygon index

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

- Field Detail
  - distanceIndex
```
public Map<String,Map<Point,Map<Point,Double>>> distanceIndex
```
  - polygonIndex
```
public Map<String,Polygon> polygonIndex
```
  - computations
```
public int computations
```
- Constructor Detail
  - PolygonIndex
```
public PolygonIndex()
```
- Method Detail
  - toString
```
public String toString()
```
    String representation of the polygon index
    
    Overrides:
    
    toString in class Object
    
    Returns:
    
    polygon index, as a string
  - index
```
public void index(Set<Polygon> polygons)
```
    Indexes a list of polygons by mapping the uri of each polygon to the corresponding distanceIndex
    
    Parameters:
    
    polygons - to be indexed
  - index
```
public void index(Polygon p)
```
    Indexes the distances between the points in a given polygon and adds polygon to list of indexes
    
    Parameters:
    
    p - Input polygon
  - getDistance
```
public double getDistance(String uri,
                          Point x,
                          Point y)
```
    Returns the distances between two points x and y from the polygon with label uri Returns -1 if nothing is found
    
    Parameters:
    
    uri - Label of the polygon
    
    x - First point from the polygon
    
    y - Second point from the polygon
    
    Returns:
    
    Distance between x and y