com.rapidminer.example.table
Class NumericalAttribute

java.lang.Object
  com.rapidminer.example.table.AbstractAttribute
      com.rapidminer.example.table.NumericalAttribute

All Implemented Interfaces:

Attribute, java.io.Serializable, java.lang.Cloneable

public class NumericalAttribute
extends AbstractAttribute

This class holds all information on a single numerical attribute. In addition to the information of the superclass this is some statistics data like minimum, maximum and average of the values.

Author:

Ingo Mierswa Exp $

See Also:

Serialized Form

Field Summary

static int	DEFAULT_NUMBER_OF_DIGITS Indicates the default number of fraction digits which is defined by the system property rapidminer.gui.fractiondigits.numbers.
static int	UNLIMITED_NUMBER_OF_DIGITS Indicates an unlimited number of fraction digits.

Fields inherited from interface com.rapidminer.example.Attribute

MISSING_NOMINAL_VALUE, UNDEFINED_ATTRIBUTE_INDEX, VIEW_ATTRIBUTE_INDEX

Method Summary

java.lang.Object	clone() Clones this attribute.
java.lang.String	getAsString(double value, int numberOfDigits, boolean quoteNominal) Returns a string representation of value.
NominalMapping	getMapping() Returns the nominal mapping between nominal values and internal double representations.
boolean	isNominal() Returns true if the attribute is nominal.
boolean	isNumerical() Returns true if the attribute is nominal.
void	setMapping(NominalMapping mapping) Does nothing.

Methods inherited from class com.rapidminer.example.table.AbstractAttribute

addOwner, addTransformation, clearTransformations, equals, getAllStatistics, getBlockType, getConstruction, getDefault, getLastTransformation, getName, getStatistics, getStatistics, getTableIndex, getValue, getValueType, hashCode, readResolve, registerStatistics, removeOwner, setBlockType, setConstruction, setDefault, setName, setTableIndex, setValue, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

DEFAULT_NUMBER_OF_DIGITS

public static final int DEFAULT_NUMBER_OF_DIGITS

Indicates the default number of fraction digits which is defined by the system property rapidminer.gui.fractiondigits.numbers.

See Also:

Constant Field Values

UNLIMITED_NUMBER_OF_DIGITS

public static final int UNLIMITED_NUMBER_OF_DIGITS

Indicates an unlimited number of fraction digits.

See Also:

Constant Field Values

Method Detail

clone

public java.lang.Object clone()

Clones this attribute.

Specified by:

clone in interface Attribute

Specified by:

clone in class AbstractAttribute

isNominal

public boolean isNominal()

Description copied from interface: Attribute

Returns true if the attribute is nominal.

isNumerical

public boolean isNumerical()

Description copied from interface: Attribute

Returns true if the attribute is nominal.

getMapping

public NominalMapping getMapping()

Description copied from interface: Attribute

Returns the nominal mapping between nominal values and internal double representations. Please note that invoking this method might result in an exception for non-nominal attributes.

setMapping

public void setMapping(NominalMapping mapping)

Does nothing.

getAsString

public java.lang.String getAsString(double value,
                                    int numberOfDigits,
                                    boolean quoteNominal)

Returns a string representation of value. If the numberOfDigits is greater than 0 this number is used to format the string. Otherwise the value of the system property rapidminer.gui.fractiondigits.numbers will be used (see Tools in case of DEFAULT_NUMBER_OF_DIGITS or an unlimited number of digits in case of UNLIMITED_NUMBER_OF_DIGITS. For the value NaN a "?" will be returned.