Package org.geotools.feature.visitor
Class QuantileListVisitor
- Object
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- QuantileListVisitor
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- All Implemented Interfaces:
FeatureVisitor
,FeatureCalc
public class QuantileListVisitor extends Object implements FeatureCalc
Obtains the data needed for a Quantile operation (classification of features into classes of equal size).The result contains an array of lists with the expression values in each.
- Author:
- Cory Horner, Refractions Research Inc.
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Constructor Summary
Constructors Constructor Description QuantileListVisitor(Expression expr, int bins)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
getNaNCount()
int
getNullCount()
CalcResult
getResult()
Returns the result of the calculation as a handy object which can be merged and modified.void
init(SimpleFeatureCollection collection)
void
reset(int bins)
void
visit(Feature feature)
Visit the provided feature.void
visit(SimpleFeature feature)
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Constructor Detail
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QuantileListVisitor
public QuantileListVisitor(Expression expr, int bins)
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Method Detail
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init
public void init(SimpleFeatureCollection collection)
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getResult
public CalcResult getResult()
Description copied from interface:FeatureCalc
Returns the result of the calculation as a handy object which can be merged and modified.- Specified by:
getResult
in interfaceFeatureCalc
- Returns:
- the results of the calculation
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visit
public void visit(SimpleFeature feature)
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visit
public void visit(Feature feature)
Description copied from interface:FeatureVisitor
Visit the provided feature.Please consult the documentation for the FeatureCollection you are visiting to learn more - the provided feature may be invalid, or read only.
- Specified by:
visit
in interfaceFeatureVisitor
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reset
public void reset(int bins)
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getNaNCount
public int getNaNCount()
- Returns:
- the number of features which returned a NaN
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getNullCount
public int getNullCount()
- Returns:
- the number of features which returned a null
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