Package weka.filters.unsupervised.attribute

Class NumericTransform

    • Constructor Detail

      • NumericTransform

        public NumericTransform()
        Default constructor -- sets the default transform method to java.lang.Math.abs().

    • Method Detail

      • globalInfo

        public java.lang.String globalInfo()
        Returns a string describing this filter
        Returns:
        a description of the filter suitable for displaying in the explorer/experimenter gui

      • setInputFormat

        public boolean setInputFormat​(Instances instanceInfo)
                       throws java.lang.Exception
        Sets the format of the input instances.
        Overrides:
        setInputFormat in class Filter
        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:
        java.lang.Exception - if the input format can't be set successfully

      • input

        public boolean input​(Instance instance)
              throws java.lang.Exception
        Input an instance for filtering. The instance is processed and made available for output immediately.
        Overrides:
        input in class Filter
        Parameters:
        instance - the input instance
        Returns:
        true if the filtered instance may now be collected with output().
        Throws:
        java.lang.IllegalStateException - if no input format has been set.
        java.lang.reflect.InvocationTargetException - if there is a problem applying the configured transform method.
        java.lang.NullPointerException - if the input format has not been defined.
        java.lang.Exception - if the input instance was not of the correct format or if there was a problem with the filtering.

      • listOptions

        public java.util.Enumeration listOptions()
        Returns an enumeration describing the available options.
        Specified by:
        listOptions in interface OptionHandler
        Returns:
        an enumeration of all the available options.

      • setOptions

        public void setOptions​(java.lang.String[] options)
                throws java.lang.Exception
        Parses a given list of options.

        Valid options are: 

         -R <index1,index2-index4,...>
  Specify list of columns to transform. First and last are
  valid indexes (default none). Non-numeric columns are 
  skipped.
         -V
  Invert matching sense.
         -C <string>
  Sets the class containing transformation method.
  (default java.lang.Math)
         -M <string>
  Sets the method. (default abs)
        Specified by:
        setOptions in interface OptionHandler
        Parameters:
        options - the list of options as an array of strings
        Throws:
        java.lang.Exception - if an option is not supported

      • getOptions

        public java.lang.String[] getOptions()
        Gets the current settings of the filter.
        Specified by:
        getOptions in interface OptionHandler
        Returns:
        an array of strings suitable for passing to setOptions

      • classNameTipText

        public java.lang.String classNameTipText()
        Returns the tip text for this property
        Returns:
        tip text for this property suitable for displaying in the explorer/experimenter gui

      • getClassName

        public java.lang.String getClassName()
        Get the class containing the transformation method.
        Returns:
        string describing the class

      • setClassName

        public void setClassName​(java.lang.String name)
                  throws java.lang.ClassNotFoundException
        Sets the class containing the transformation method.
        Parameters:
        name - the name of the class
        Throws:
        java.lang.ClassNotFoundException - if class can't be found

      • methodNameTipText

        public java.lang.String methodNameTipText()
        Returns the tip text for this property
        Returns:
        tip text for this property suitable for displaying in the explorer/experimenter gui

      • getMethodName

        public java.lang.String getMethodName()
        Get the transformation method.
        Returns:
        string describing the transformation method.

      • setMethodName

        public void setMethodName​(java.lang.String name)
                   throws java.lang.NoSuchMethodException
        Set the transformation method.
        Parameters:
        name - the name of the method
        Throws:
        java.lang.NoSuchMethodException - if method can't be found in class

      • invertSelectionTipText

        public java.lang.String invertSelectionTipText()
        Returns the tip text for this property
        Returns:
        tip text for this property suitable for displaying in the explorer/experimenter gui

      • getInvertSelection

        public boolean getInvertSelection()
        Get whether the supplied columns are to be transformed or not
        Returns:
        true if the supplied columns will be kept

      • setInvertSelection

        public void setInvertSelection​(boolean invert)
        Set whether selected columns should be transformed or not.
        Parameters:
        invert - the new invert setting

      • attributeIndicesTipText

        public java.lang.String attributeIndicesTipText()
        Returns the tip text for this property
        Returns:
        tip text for this property suitable for displaying in the explorer/experimenter gui

      • getAttributeIndices

        public java.lang.String getAttributeIndices()
        Get the current range selection
        Returns:
        a string containing a comma separated list of ranges

      • setAttributeIndices

        public void setAttributeIndices​(java.lang.String rangeList)
        Set which attributes are to be transformed (or kept if invert is true).
        Parameters:
        rangeList - a string representing the list of attributes. Since the string will typically come from a user, attributes are indexed from 1.
        eg: first-3,5,6-last
        Throws:
        InvalidArgumentException - if an invalid range list is supplied

      • setAttributeIndicesArray

        public void setAttributeIndicesArray​(int[] attributes)
        Set which attributes are to be transformed (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

      • main

        public static void main​(java.lang.String[] argv)
        Main method for testing this class.
        Parameters:
        argv - should contain arguments to the filter: use -h for help