AbstractQuantityClassificationFunction (Geotools modules 30-SNAPSHOT API)

Object
- ExpressionAbstract
- - DefaultExpression
  - - ClassificationFunction
    - - AbstractQuantityClassificationFunction

All Implemented Interfaces:

FunctionExpression, Factory, Expression, Function

Direct Known Subclasses:

EqualAreaFunction, QuantileFunction
```
public abstract class AbstractQuantityClassificationFunction
extends ClassificationFunction
```

Field Summary
- Fields inherited from class ClassificationFunction
  LOGGER
- Fields inherited from interface Expression
  NIL

Constructor Summary

Constructors
Constructor Description

AbstractQuantityClassificationFunction(FunctionName name)

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`Object`	`evaluate(Object feature)`	Subclass should override, default implementation returns null.
`protected abstract FeatureCalc`	`getListVisitor()`	Returns the list visitor for the specific implementation of "quantity" (e.g., count, area, ...).
`protected abstract boolean`	`percentages()`

Methods inherited from class ClassificationFunction
accept, computeGroupByPercentages, computePercentage, decimalPlaces, fixRound, getClasses, getFallbackValue, getFunctionName, getImplementationHints, getName, getParameters, getProgressListener, round, setClasses, setFallbackValue, setParameters, setProgressListener, toString

Methods inherited from class DefaultExpression
isAttributeExpression, isExpression, isFunctionExpression, isGeometryExpression, isLiteralExpression, isMathExpression

Methods inherited from class ExpressionAbstract
evaluate

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

Methods inherited from interface Expression
evaluate

- Constructor Detail
  - AbstractQuantityClassificationFunction
```
public AbstractQuantityClassificationFunction(FunctionName name)
```
- Method Detail
  - getListVisitor
```
protected abstract FeatureCalc getListVisitor()
```
    Returns the list visitor for the specific implementation of "quantity" (e.g., count, area, ...). The visitor must return a "bins" structure matching {code}List[]{code}, where each array entry is a bin, and values inside the bin are sorted from lowest to highest
  - evaluate
```
public Object evaluate(Object feature)
```
    Description copied from class: ExpressionAbstract
    
    Subclass should override, default implementation returns null.
    
    Specified by:
    
    evaluate in interface Expression
    
    Specified by:
    
    evaluate in class ClassificationFunction
    
    Returns:
    
    default implementation returns null
  - percentages
```
protected abstract boolean percentages()
```
    Returns:
    
    true if percentages computation is enabled, false if not