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java.lang.Objectweka.filters.Filter
weka.filters.unsupervised.attribute.StringToNominal
public class StringToNominal
Converts a string attribute (i.e. unspecified number of values) to nominal (i.e. set number of values). You should ensure that all string values that will appear are represented in the first batch of the data.
Valid options are:-C <col> Sets the attribute index (default last).
Constructor Summary | |
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StringToNominal()
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Method Summary | |
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java.lang.String |
attributeIndexTipText()
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boolean |
batchFinished()
Signifies that this batch of input to the filter is finished. |
java.lang.String |
getAttributeIndex()
Get the index of the attribute used. |
Capabilities |
getCapabilities()
Returns the Capabilities of this filter. |
java.lang.String[] |
getOptions()
Gets the current settings of the filter. |
java.lang.String |
globalInfo()
Returns a string describing this filter |
boolean |
input(Instance instance)
Input an instance for filtering. |
java.util.Enumeration |
listOptions()
Returns an enumeration describing the available options. |
static void |
main(java.lang.String[] argv)
Main method for testing this class. |
void |
setAttributeIndex(java.lang.String attIndex)
Sets index of the attribute used. |
boolean |
setInputFormat(Instances instanceInfo)
Sets the format of the input instances. |
void |
setOptions(java.lang.String[] options)
Parses a given list of options. |
Methods inherited from class weka.filters.Filter |
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batchFilterFile, filterFile, getCapabilities, getOutputFormat, isFirstBatchDone, isNewBatch, isOutputFormatDefined, makeCopies, makeCopy, numPendingOutput, output, outputPeek, toString, useFilter, wekaStaticWrapper |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public StringToNominal()
Method Detail |
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public java.lang.String globalInfo()
public Capabilities getCapabilities()
getCapabilities
in interface CapabilitiesHandler
getCapabilities
in class Filter
Capabilities
public boolean setInputFormat(Instances instanceInfo) throws java.lang.Exception
setInputFormat
in class Filter
instanceInfo
- an Instances object containing the input
instance structure (any instances contained in the object are
ignored - only the structure is required).
UnsupportedAttributeTypeException
- if the selected attribute
a string attribute.
java.lang.Exception
- if the input format can't be set
successfully.public boolean input(Instance instance)
input
in class Filter
instance
- the input instance.
java.lang.IllegalStateException
- if no input structure has been defined.public boolean batchFinished()
batchFinished
in class Filter
java.lang.IllegalStateException
- if no input structure has been defined.public java.util.Enumeration listOptions()
listOptions
in interface OptionHandler
public void setOptions(java.lang.String[] options) throws java.lang.Exception
-C <col> Sets the attribute index (default last).
setOptions
in interface OptionHandler
options
- the list of options as an array of strings
java.lang.Exception
- if an option is not supportedpublic java.lang.String[] getOptions()
getOptions
in interface OptionHandler
public java.lang.String attributeIndexTipText()
public java.lang.String getAttributeIndex()
public void setAttributeIndex(java.lang.String attIndex)
attIndex
- the index of the attributepublic static void main(java.lang.String[] argv)
argv
- should contain arguments to the filter:
use -h for help
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