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Class weka.filters.MakeIndicatorFilter
java.lang.Object
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+----weka.filters.Filter
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+----weka.filters.MakeIndicatorFilter
- public class MakeIndicatorFilter
- extends Filter
- implements OptionHandler
Creates a new dataset with a boolean attribute replacing a nominal
attribute. In the new dataset, a value of 1 is assigned to an
instance that exhibits a particular range of attribute values, a 0 to an
instance that doesn't. The boolean attribute is coded as numeric by
default.
Valid filter-specific options are:
-C col
Index of the attribute to be changed. (default "last")
-V index1,index2-index4,...
Specify list of values to indicate. First and last are valid indices.
(default "last")
-N
Set if new boolean attribute nominal.
- Author:
- Eibe Frank (eibe@cs.waikato.ac.nz)
-
MakeIndicatorFilter()
-
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attributeIndexTipText()
-
-
getAttributeIndex()
- Get the index of the attribute used.
-
getNumeric()
- Check if new attribute is to be numeric.
-
getOptions()
- Gets the current settings of the filter.
-
getValueIndices()
- Get the indices of the indicator values.
-
getValueRange()
- Get the range containing the indicator values.
-
globalInfo()
-
-
input(Instance)
- Input an instance for filtering.
-
listOptions()
- Returns an enumeration describing the available options
-
main(String[])
- Main method for testing this class.
-
numericTipText()
-
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setAttributeIndex(int)
- Sets index of of the attribute used.
-
setInputFormat(Instances)
- Sets the format of the input instances.
-
setNumeric(boolean)
- Sets if the new Attribute is to be numeric.
-
setOptions(String[])
- Parses the options for this object.
-
setValueIndex(int)
- Sets index of the indicator value.
-
setValueIndices(String)
- Sets indices of the indicator values.
-
setValueIndicesArray(int[])
- Set which attributes are to be deleted (or kept if invert is true)
-
valueIndicesTipText()
-
MakeIndicatorFilter
public MakeIndicatorFilter()
setInputFormat
public boolean setInputFormat(Instances instanceInfo) throws Exception
- Sets the format of the input instances.
- Parameters:
- instanceInfo - 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: UnsupportedAttributeTypeException
- the selecte attribute is not nominal
- Throws: UnsupportedAttributeTypeException
- the selecte attribute has fewer than two values.
- Overrides:
- setInputFormat in class Filter
input
public boolean input(Instance instance)
- Input an instance for filtering. The instance is processed
and made available for output immediately.
- Parameters:
- instance - the input instance
- Returns:
- true if the filtered instance may now be
collected with output().
- Throws: IllegalStateException
- if no input format has been set.
- Overrides:
- input in class Filter
listOptions
public Enumeration listOptions()
- Returns an enumeration describing the available options
- Returns:
- an enumeration of all the available options
setOptions
public void setOptions(String options[]) throws Exception
- Parses the options for this object. Valid options are:
-C col
Index of the attribute to be changed.
-V index1,index2-index4,...
Specify list of values to indicate. First and last are valid indices.
(default "last")
-N
Set if new boolean attribute nominal.
- Parameters:
- options - the list of options as an array of strings
- Throws: Exception
- if an option is not supported
getOptions
public String[] getOptions()
- Gets the current settings of the filter.
- Returns:
- an array of strings suitable for passing to setOptions
globalInfo
public String globalInfo()
- Returns:
- a description of the filter suitable for
displaying in the explorer/experimenter gui
attributeIndexTipText
public String attributeIndexTipText()
- Returns:
- tip text for this property suitable for
displaying in the explorer/experimenter gui
getAttributeIndex
public int getAttributeIndex()
- Get the index of the attribute used.
- Returns:
- the index of the attribute
setAttributeIndex
public void setAttributeIndex(int attIndex)
- Sets index of of the attribute used.
- Parameters:
- index - the index of the attribute
getValueRange
public Range getValueRange()
- Get the range containing the indicator values.
- Returns:
- the range containing the indicator values
valueIndicesTipText
public String valueIndicesTipText()
- Returns:
- tip text for this property suitable for
displaying in the explorer/experimenter gui
getValueIndices
public String getValueIndices()
- Get the indices of the indicator values.
- Returns:
- the indices of the indicator values
setValueIndices
public void setValueIndices(String range)
- Sets indices of the indicator values.
- Parameters:
- range - the string representation of the indicator value indices
- See Also:
- Range
setValueIndex
public void setValueIndex(int index)
- Sets index of the indicator value.
- Parameters:
- index - the index of the indicator value
setValueIndicesArray
public void setValueIndicesArray(int indices[])
- Set which attributes are to be deleted (or kept if invert is true)
- Parameters:
- attributes - an array containing indexes of attributes to select.
Since the array will typically come from a program, attributes are indexed
from 0.
- Throws: InvalidArgumentException
- if an invalid set of ranges is supplied
numericTipText
public String numericTipText()
- Returns:
- tip text for this property suitable for
displaying in the explorer/experimenter gui
setNumeric
public void setNumeric(boolean bool)
- Sets if the new Attribute is to be numeric.
- Parameters:
- bool - true if new Attribute is to be numeric
getNumeric
public boolean getNumeric()
- Check if new attribute is to be numeric.
- Returns:
- true if new attribute is to be numeric
main
public static void main(String argv[])
- Main method for testing this class.
- Parameters:
- argv - should contain arguments to the filter:
use -h for help
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