How to use

bufferInput

method

in

weka.filters.unsupervised.attribute.Standardize

/**
 * Input an instance for filtering. Filter requires all
 * training instances be read before producing output.
 *
 * @param instance the input instance
 * @return true if the filtered instance may now be
 * collected with output().
 * @throws IllegalStateException if no input format has been set.
 */
public boolean input(Instance instance) throws Exception {
 if (getInputFormat() == null) {
  throw new IllegalStateException("No input instance format defined");
 }
 if (m_NewBatch) {
  resetQueue();
  m_NewBatch = false;
 }
 if (m_Means == null) {
  bufferInput(instance);
  return false;
 } else {
  convertInstance(instance);
  return true;
 }
}

/**
 * Input an instance for filtering. Filter requires all
 * training instances be read before producing output.
 *
 * @param instance the input instance
 * @return true if the filtered instance may now be
 * collected with output().
 * @throws IllegalStateException if no input format has been set.
 */
public boolean input(Instance instance) throws Exception {
 if (getInputFormat() == null) {
  throw new IllegalStateException("No input instance format defined");
 }
 if (m_NewBatch) {
  resetQueue();
  m_NewBatch = false;
 }
 if (m_Means == null) {
  bufferInput(instance);
  return false;
 } else {
  convertInstance(instance);
  return true;
 }
}