public class Reorder extends Filter implements UnsupervisedFilter, StreamableFilter, OptionHandler
-R <index1,index2-index4,...> Specify list of columns to copy. First and last are valid indexes. (default first-last)
Modifier and Type | Field and Description |
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protected int[] |
m_InputStringIndex
Contains an index of string attributes in the input format
that survive the filtering process -- some entries may be duplicated
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protected String |
m_NewOrderCols
Stores which columns to reorder
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protected int[] |
m_SelectedAttributes
Stores the indexes of the selected attributes in order, once the
dataset is seen
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m_FirstBatchDone, m_InputRelAtts, m_InputStringAtts, m_NewBatch, m_OutputRelAtts, m_OutputStringAtts
Constructor and Description |
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Reorder() |
Modifier and Type | Method and Description |
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String |
attributeIndicesTipText()
Returns the tip text for this property
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protected int |
determineIndex(String s,
int numAttributes)
parses the index string and returns the corresponding int index
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protected int[] |
determineIndices(int numAttributes)
parses the range string and returns an array with the indices
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String |
getAttributeIndices()
Get the current range selection
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Capabilities |
getCapabilities()
Returns the Capabilities of this filter.
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String[] |
getOptions()
Gets the current settings of the filter.
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String |
getRevision()
Returns the revision string.
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String |
globalInfo()
Returns a string describing this filter
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boolean |
input(Instance instance)
Input an instance for filtering.
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Enumeration |
listOptions()
Returns an enumeration describing the available options.
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static void |
main(String[] argv)
Main method for testing this class.
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void |
setAttributeIndices(String rangeList)
Set which attributes are to be copied (or kept if invert is true)
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void |
setAttributeIndicesArray(int[] attributes)
Set which attributes are to be copied (or kept if invert is true)
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boolean |
setInputFormat(Instances instanceInfo)
Sets the format of the input instances.
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void |
setOptions(String[] options)
Parses a given list of options.
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batchFilterFile, batchFinished, bufferInput, copyValues, copyValues, filterFile, flushInput, getCapabilities, getInputFormat, getOutputFormat, initInputLocators, initOutputLocators, inputFormatPeek, isFirstBatchDone, isNewBatch, isOutputFormatDefined, makeCopies, makeCopy, numPendingOutput, output, outputFormatPeek, outputPeek, push, resetQueue, runFilter, setOutputFormat, testInputFormat, toString, useFilter, wekaStaticWrapper
protected String m_NewOrderCols
protected int[] m_SelectedAttributes
protected int[] m_InputStringIndex
public Enumeration listOptions()
listOptions
in interface OptionHandler
public void setOptions(String[] options) throws Exception
-R <index1,index2-index4,...> Specify list of columns to copy. First and last are valid indexes. (default first-last)
setOptions
in interface OptionHandler
options
- the list of options as an array of stringsException
- if an option is not supportedpublic String[] getOptions()
getOptions
in interface OptionHandler
protected int determineIndex(String s, int numAttributes) throws Exception
s
- the index string to parsenumAttributes
- necessary for "last" and OutOfBounds checksException
- if index is not validprotected int[] determineIndices(int numAttributes) throws Exception
numAttributes
- necessary for "last" and OutOfBounds checksException
- if range is not validm_NewOrderCols
public Capabilities getCapabilities()
getCapabilities
in interface CapabilitiesHandler
getCapabilities
in class Filter
Capabilities
public boolean setInputFormat(Instances instanceInfo) throws 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).Exception
- if a problem occurs setting the input formatpublic boolean input(Instance instance)
input
in class Filter
instance
- the input instanceIllegalStateException
- if no input format has been defined.public String globalInfo()
public String getAttributeIndices()
public String attributeIndicesTipText()
public void setAttributeIndices(String rangeList) throws 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.Exception
- if an invalid range list is suppliedpublic void setAttributeIndicesArray(int[] attributes) throws 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.Exception
- if an invalid set of ranges is suppliedpublic String getRevision()
getRevision
in interface RevisionHandler
getRevision
in class Filter
public static void main(String[] argv)
argv
- should contain arguments to the filter: use -h for helpCopyright © 2015 University of Waikato, Hamilton, NZ. All rights reserved.