Feature (leJOS EV3 API documentation)

All Known Implementing Classes:

RangeFeature
```
public interface Feature
```
A Feature is an interface for information retrieved about an object detected by sensors. Feature is a map feature that is detected and reported by a FeatureDetector.

Author:

BB based on concepts by Lawrie Griffiths

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`RangeReading`	`getRangeReading()`	Returns the RangeReading for this particular detected feature.
`RangeReadings`	`getRangeReadings()`	Returns a set of RangeReadings for a number of detected objects.
`long`	`getTimeStamp()`	The time-stamp is the recorded system time when the range reading was taken.

- Method Detail
  - getRangeReading
```
RangeReading getRangeReading()
```
    Returns the RangeReading for this particular detected feature. If the sensor is capable of detecting multiple objects, this method will return the closest object it detected.
    
    Returns:
    
    RangeReading object containing angle and range.
  - getRangeReadings
```
RangeReadings getRangeReadings()
```
    Returns a set of RangeReadings for a number of detected objects. If the sensor is only capable of returning a single reading, or if only one object was detected, it will only contain one RangeReading in the set.
    
    Returns:
    
    RangeReadings object containing a set of RangeReading objects.
  - getTimeStamp
```
long getTimeStamp()
```
    The time-stamp is the recorded system time when the range reading was taken. This is generally recorded in the constructor of the Feature implementation. The time-stamp can help identify the vector of the detected object.
    
    Returns:
    
    The system time (in milliseconds) when the reading was taken.