/**
 * Load the embedding from a given arff file. First converts the ARFF to a temporary CSV file and
 * continues the loading mechanism with the CSV file afterwards
 *
 * @param path Path to the ARFF file
 */
private void loadEmbeddingFromArff(String path) {
  // Try loading ARFF file
  try {
    Instances insts = new Instances(new FileReader(path));
    CSVSaver saver = new CSVSaver();
    saver.setFieldSeparator(" ");
    saver.setInstances(insts);
    final File tmpFile =
        Paths.get(System.getProperty("java.io.tmpdir"), UUID.randomUUID().toString() + ".csv")
            .toFile();
    saver.setFile(tmpFile);
    saver.setNoHeaderRow(true);
    saver.writeBatch();
    loadEmbeddingFromCSV(tmpFile);
    tmpFile.delete();
  } catch (Exception e) {
    throw new RuntimeException(
        "ARFF file could not be read (" + wordVectorLocation.getAbsolutePath() + ")", e);
  }
}
 

/**
 * Load the embedding from a given arff file. First converts the ARFF to a temporary CSV file and
 * continues the loading mechanism with the CSV file afterwards
 *
 * @param path Path to the ARFF file
 */
private void loadEmbeddingFromArff(String path) {
  // Try loading ARFF file
  try {
    Instances insts = new Instances(new FileReader(path));
    CSVSaver saver = new CSVSaver();
    saver.setFieldSeparator(" ");
    saver.setInstances(insts);
    final File tmpFile =
        Paths.get(System.getProperty("java.io.tmpdir"), UUID.randomUUID().toString() + ".csv")
            .toFile();
    saver.setFile(tmpFile);
    saver.setNoHeaderRow(true);
    saver.writeBatch();
    loadEmbeddingFromCSV(tmpFile);
    tmpFile.delete();
  } catch (Exception e) {
    throw new RuntimeException(
        "ARFF file could not be read (" + wordVectorLocation.getAbsolutePath() + ")", e);
  }
}
 

/**
 * @param args the command line arguments
 */
public static void main(String[] args) throws Exception {
    ArffLoader loader = new ArffLoader();
    loader.setSource(new File("/Users/admin/Documents/NetBeansProjects/Datasets/weather.arff"));
    Instances data = loader.getDataSet();
    
    CSVSaver saver = new CSVSaver();
    saver.setInstances(data);
    
    saver.setFile(new File("weather.csv"));
    saver.writeBatch();
}
 

/**
 * Save @param data to the CSV file at @param path
 */
public static void saveDataToCsvFile(String path, Instances data) throws IOException{
	    System.out.println("\nSaving to file " + path + "...");
	    CSVSaver saver = new CSVSaver();
	    saver.setInstances(data);
	    saver.setFile(new File(path));
	    saver.writeBatch();
}
 

/**
 * Returns the action lister to use in the menu.
 *
 * @param history   the current history
 * @param index     the selected history item
 * @return          the listener
 */
@Override
public ActionListener getActionListener(final ResultHistoryList history, final int index) {
	final Result result = history.getResultAt(index);

	return new ActionListener() {
		@Override
		public void actionPerformed(ActionEvent e) {
			Instances performance = (Instances) result.getMeasurement(IncrementalPerformance.RESULTS_SAMPLED_OVER_TIME);

			int retVal = getFileChooser().showSaveDialog(null);
			if (retVal != MekaFileChooser.APPROVE_OPTION)
				return;
			File file = getFileChooser().getSelectedFile();


			try {

				CSVSaver saver = new CSVSaver();
				saver.setInstances(performance);
				saver.setFile(getFileChooser().getSelectedFile());
				saver.writeBatch();
			} catch (Exception ex) {
				String msg = "Failed to write to '" + file + "'!";
				System.err.println(msg);
				ex.printStackTrace();
				JOptionPane.showMessageDialog( null, msg + "\n" + e);
			}
		}
	};
}
 

/**
 * Returns the action lister to use in the menu.
 *
 * @param history   the current history
 * @param index     the selected history item
 * @return          the listener
 */
@Override
public ActionListener getActionListener(final ResultHistoryList history, final int index) {
	final Result result = history.getResultAt(index);
	return new ActionListener() {
		@Override
		public void actionPerformed(ActionEvent e) {
			int retVal = getFileChooser().showSaveDialog(null);
			if (retVal != MekaFileChooser.APPROVE_OPTION)
				return;
			File file = getFileChooser().getSelectedFile();

			try {

				CSVSaver saver = new CSVSaver();
				Instances performance = Result.getPredictionsAsInstances(result);
				saver.setInstances(performance);
				saver.setFile(getFileChooser().getSelectedFile());
				saver.writeBatch();
			} catch (Exception ex) {
				String msg = "Failed to write to '" + file + "'!";
				System.err.println(msg);
				ex.printStackTrace();
				JOptionPane.showMessageDialog( null, msg + "\n" + e);
			}
		}
	};
}