Class FileStream

    • Field Detail

      • arffFileOption

        public FileOption arffFileOption
      • classIndexOption

        public IntOption classIndexOption
      • normalizeOption

        public FlagOption normalizeOption
      • removeAttributesOption

        public ListOption removeAttributesOption
      • keepNonNumericalAttrOption

        public FlagOption keepNonNumericalAttrOption
      • fileReader

        protected Reader fileReader
      • hitEndOfFile

        protected boolean hitEndOfFile
      • numInstancesRead

        protected int numInstancesRead
    • Constructor Detail

      • FileStream

        public FileStream()
    • Method Detail

      • prepareForUseImpl

        public void prepareForUseImpl​(TaskMonitor monitor,
                                      ObjectRepository repository)
        Description copied from class: AbstractOptionHandler
        This method describes the implementation of how to prepare this object for use. All classes that extends this class have to implement prepareForUseImpl and not prepareForUse since prepareForUse calls prepareForUseImpl.
        Specified by:
        prepareForUseImpl in class AbstractOptionHandler
        Parameters:
        monitor - the TaskMonitor to use
        repository - the ObjectRepository to use
      • getHeader

        public InstancesHeader getHeader()
        Description copied from interface: ExampleStream
        Gets the header of this stream. This is useful to know attributes and classes. InstancesHeader is an extension of weka.Instances.
        Returns:
        the header of this stream
      • estimatedRemainingInstances

        public long estimatedRemainingInstances()
        Description copied from interface: ExampleStream
        Gets the estimated number of remaining instances in this stream
        Returns:
        the estimated number of instances to get from this stream
      • hasMoreInstances

        public boolean hasMoreInstances()
        Description copied from interface: ExampleStream
        Gets whether this stream has more instances to output. This is useful when reading streams from files.
        Returns:
        true if this stream has more instances to output
      • nextInstance

        public InstanceExample nextInstance()
        Description copied from interface: ExampleStream
        Gets the next example from this stream.
        Returns:
        the next example of this stream
      • isRestartable

        public boolean isRestartable()
        Description copied from interface: ExampleStream
        Gets whether this stream can restart.
        Returns:
        true if this stream can restart
      • restart

        public void restart()
        Description copied from interface: ExampleStream
        Restarts this stream. It must be similar to starting a new stream from scratch.
      • readNextInstanceFromFile

        protected boolean readNextInstanceFromFile()
      • readMinMaxDiffValues

        protected ArrayList<Double[]> readMinMaxDiffValues​(HashSet<Integer> ignoredAttributes)
        Parameters:
        ignoredAttributes - Attributes that will be ignored
        Returns:
        A list with min/max and diff=max-min values per attribute of the arff file
      • getDescription

        public void getDescription​(StringBuilder sb,
                                   int indent)
        Description copied from interface: MOAObject
        Returns a string representation of this object. Used in AbstractMOAObject.toString to give a string representation of the object.
        Parameters:
        sb - the stringbuilder to add the description
        indent - the number of characters to indent