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java.lang.Objectweka.filters.Filter
weka.filters.unsupervised.attribute.Copy
public class Copy
An instance filter that copies a range of attributes in the dataset. This is used in conjunction with other filters that overwrite attribute values during the course of their operation -- this filter allows the original attributes to be kept as well as the new attributes.
Valid options are:-R <index1,index2-index4,...> Specify list of columns to copy. First and last are valid indexes. (default none)
-V Invert matching sense (i.e. copy all non-specified columns)
Constructor Summary | |
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Copy()
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Method Summary | |
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java.lang.String |
attributeIndicesTipText()
Returns the tip text for this property |
java.lang.String |
getAttributeIndices()
Get the current range selection |
Capabilities |
getCapabilities()
Returns the Capabilities of this filter. |
boolean |
getInvertSelection()
Get whether the supplied columns are to be removed or kept |
java.lang.String[] |
getOptions()
Gets the current settings of the filter. |
java.lang.String |
getRevision()
Returns the revision string. |
java.lang.String |
globalInfo()
Returns a string describing this filter |
boolean |
input(Instance instance)
Input an instance for filtering. |
java.lang.String |
invertSelectionTipText()
Returns the tip text for this property |
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 |
setAttributeIndices(java.lang.String rangeList)
Set which attributes are to be copied (or kept if invert is true) |
void |
setAttributeIndicesArray(int[] attributes)
Set which attributes are to be copied (or kept if invert is true) |
boolean |
setInputFormat(Instances instanceInfo)
Sets the format of the input instances. |
void |
setInvertSelection(boolean invert)
Set whether selected columns should be removed or kept. |
void |
setOptions(java.lang.String[] options)
Parses a given list of options. |
Methods inherited from class weka.filters.Filter |
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batchFilterFile, batchFinished, 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 Copy()
Method Detail |
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public java.util.Enumeration listOptions()
listOptions
in interface OptionHandler
public void setOptions(java.lang.String[] options) throws java.lang.Exception
-R <index1,index2-index4,...> Specify list of columns to copy. First and last are valid indexes. (default none)
-V Invert matching sense (i.e. copy all non-specified columns)
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 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).
java.lang.Exception
- if a problem occurs setting the input formatpublic boolean input(Instance instance)
input
in class Filter
instance
- the input instance
java.lang.IllegalStateException
- if no input format has been defined.public java.lang.String globalInfo()
public java.lang.String invertSelectionTipText()
public boolean getInvertSelection()
public void setInvertSelection(boolean invert)
setInputFormat(Instances)
, since the output format is
determined in that method.
invert
- the new invert settingpublic java.lang.String getAttributeIndices()
public java.lang.String attributeIndicesTipText()
public void setAttributeIndices(java.lang.String rangeList) throws java.lang.Exception
rangeList
- a string representing the list of attributes. Since
the string will typically come from a user, attributes are indexed from
1. setInputFormat(Instances)
, since the output format is
determined in that method.
java.lang.Exception
- if an invalid range list is suppliedpublic void setAttributeIndicesArray(int[] attributes) throws java.lang.Exception
attributes
- an array containing indexes of attributes to select.
Since the array will typically come from a program, attributes are indexed
from 0.setInputFormat(Instances)
, since the output format is
determined in that method.
java.lang.Exception
- if an invalid set of ranges is suppliedpublic java.lang.String getRevision()
getRevision
in interface RevisionHandler
getRevision
in class Filter
public static void main(java.lang.String[] argv)
argv
- should contain arguments to the filter: use -h for help
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