Package weka.filters.unsupervised.attribute

Class OrdinalToNumeric

java.lang.Object

weka.filters.Filter

weka.filters.unsupervised.attribute.PotentialClassIgnorer

weka.filters.unsupervised.attribute.OrdinalToNumeric

All Implemented Interfaces:

Serializable, CapabilitiesHandler, CapabilitiesIgnorer, CommandlineRunnable, EnvironmentHandler, OptionHandler, RevisionHandler, WeightedAttributesHandler, WeightedInstancesHandler, StreamableFilter, UnsupervisedFilter

public class OrdinalToNumeric
extends PotentialClassIgnorer
implements StreamableFilter, UnsupervisedFilter, EnvironmentHandler, WeightedAttributesHandler, WeightedInstancesHandler

An attribute filter that converts ordinal nominal attributes into numeric ones

Valid options are:

 -unset-class-temporarily
  Unsets the class index temporarily before the filter is
  applied to the data.
  (default: no)

 -R <range or list of names>
  Attributes to operate on. Can be a 1-based index range of indices, or a comma-separated list of names.
  (default: first-last)

Version:

$Revision: $

Author:

Mark Hall (mhall{[at]}pentaho{[dot]}com)

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
OrdinalToNumeric()

Method Summary

Modifier and Type	Method	Description
String	getAttributesToOperateOn()	Get the attributes to operate on
Capabilities	getCapabilities()	Returns the Capabilities of this filter.
String	getRevision()	Returns the revision string.
String	globalInfo()	Returns a string describing this filter
boolean	input(Instance inst)	Input an instance for filtering.
static void	main(String[] args)	Main method for testing this class.
void	setAttributesToOperateOn(String atts)	Set the attributes to operate on
void	setEnvironment(Environment env)	Set environment to use
boolean	setInputFormat(Instances instancesInfo)	Sets the format of the input instances.

Methods inherited from class weka.filters.unsupervised.attribute.PotentialClassIgnorer

getIgnoreClass, getOptions, getOutputFormat, ignoreClassTipText, listOptions, setIgnoreClass, setOptions

Methods inherited from class weka.filters.Filter

batchFilterFile, batchFinished, debugTipText, doNotCheckCapabilitiesTipText, filterFile, getCapabilities, getCopyOfInputFormat, getDebug, getDoNotCheckCapabilities, isFirstBatchDone, isNewBatch, isOutputFormatDefined, makeCopies, makeCopy, mayRemoveInstanceAfterFirstBatchDone, numPendingOutput, output, outputPeek, postExecution, preExecution, run, runFilter, setDebug, setDoNotCheckCapabilities, toString, useFilter, wekaStaticWrapper

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

OrdinalToNumeric

public OrdinalToNumeric()

Method Detail

globalInfo

public String globalInfo()

Returns a string describing this filter

Returns:

a description of the filter suitable for displaying in the explorer/experimenter gui

getCapabilities

public Capabilities getCapabilities()

Returns the Capabilities of this filter.

Specified by:

getCapabilities in interface CapabilitiesHandler

Overrides:

getCapabilities in class Filter

Returns:

the capabilities of this object

See Also:

Capabilities

setAttributesToOperateOn

@OptionMetadata(displayName="Attributes to operate on",
                description="Attributes to operate on. Can be a 1-based index range of indices or a comma-separated list of names",
                commandLineParamName="R",
                commandLineParamSynopsis="-R <range or list of names>",
                displayOrder=1)
public void setAttributesToOperateOn(String atts)

Set the attributes to operate on

Parameters:

atts - a range of 1-based indexes or a comma-separated list of attribute names

getAttributesToOperateOn

public String getAttributesToOperateOn()

Get the attributes to operate on

Returns:

a range of 1-based indexes or a comma-separated list of attribute names

setInputFormat

public boolean setInputFormat(Instances instancesInfo)
                       throws Exception

Sets the format of the input instances.

Overrides:

setInputFormat in class PotentialClassIgnorer

Parameters:

instancesInfo - an Instances object containing the input instance structure (any instances contained in the object are ignored - only the structure is required).

Returns:

true if the outputFormat may be collected immediately

Throws:

Exception - if the input format can't be set successfully

input

public boolean input(Instance inst)
              throws Exception

Input an instance for filtering. Ordinarily the instance is processed and made available for output immediately. Some filters require all instances be read before producing output.

Overrides:

input in class Filter

Parameters:

inst - the input instance

Returns:

true if the filtered instance may now be collected with output().

Throws:

IllegalStateException - if no input format has been defined.

NullPointerException - if the input format has not been defined.

Exception - if the input instance was not of the correct format or if there was a problem with the filtering.

getRevision

public String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Overrides:

getRevision in class Filter

Returns:

the revision

setEnvironment

public void setEnvironment(Environment env)

Set environment to use

Specified by:

setEnvironment in interface EnvironmentHandler

Parameters:

env - the environment variables to

main

public static void main(String[] args)

Main method for testing this class.

Parameters:

args - should contain arguments to the filter: use -h for help