Java MLCell类代码示例

import com.jmatio.types.MLCell; //导入依赖的package包/类
public void writeHistoricalData(ForecastErrorsHistoricalData forecastErrorsHistoricalData) throws IOException {
        Objects.requireNonNull(forecastErrorsHistoricalData, "forecast errors historical data is null");
//        LOGGER.debug("Preparing stochastic variables mat data");
//        MLStructure stochasticVariables = stochasticVariablesAsMLStructure(forecastErrorsHistoricalData.getStochasticVariables());
        LOGGER.debug("Preparing injections mat data");
        MLCell injections = histoDataHeadersAsMLChar(forecastErrorsHistoricalData.getForecastsData().columnKeyList());
        LOGGER.debug("Preparing injections countries mat data");
        MLCell injectionsCountries =  injectionCountriesAsMLChar(forecastErrorsHistoricalData.getStochasticVariables());
        LOGGER.debug("Preparing forecasts mat data");
        MLDouble forecastsData = histoDataAsMLDouble("forec_filt", forecastErrorsHistoricalData.getForecastsData());
        LOGGER.debug("Preparing snapshots mat data");
        MLDouble snapshotsData = histoDataAsMLDouble("snap_filt", forecastErrorsHistoricalData.getSnapshotsData());
        LOGGER.debug("Saving mat data into " + matFile.toString());
        List<MLArray> mlarray = new ArrayList<>();
//        mlarray.add((MLArray) stochasticVariables );
        mlarray.add((MLArray) injections);
        mlarray.add((MLArray) forecastsData);
        mlarray.add((MLArray) snapshotsData);
        mlarray.add((MLArray) injectionsCountries);
        MatFileWriter writer = new MatFileWriter();
        writer.write(matFile.toFile(), mlarray);
    }
 

import com.jmatio.types.MLCell; //导入依赖的package包/类
public static String[] readStringsArrayFromMat(Path matFile, String stringsArrayName) throws IOException {
    Objects.requireNonNull(matFile, "mat file is null");
    Objects.requireNonNull(stringsArrayName, "strings array name is null");
    MatFileReader matFileReader = new MatFileReader();
    Map<String, MLArray> matFileContent = matFileReader.read(matFile.toFile());
    MLCell stringsArray = (MLCell) matFileContent.get(stringsArrayName);
    String[] strings = new String[stringsArray.getN()];
    for (int i = 0; i < stringsArray.getN(); i++) {
        strings[i] = ((MLChar) stringsArray.get(0, i)).getString(0);
    }
    return strings;
}
 

import com.jmatio.types.MLCell; //导入依赖的package包/类
/** Create ML Structure with data for a channel
 *  @param index Index of channel in model
 *  @param name Channel name
 *  @param times Time stamps
 *  @param values Values
 *  @param severities Severities
 *  @return {@link MLStructure}
 */
private MLStructure createMLStruct(final int index, final String name,
        final List<Instant> times,
        final List<Double> values,
        final List<AlarmSeverity> severities)
{
    final MLStructure struct = new MLStructure("channel" + index, new int[] { 1, 1 });
    final int N = values.size();
    final int[] dims = new int[] { N, 1 };
    final MLCell time = new MLCell(null, dims);
    final MLDouble value = new MLDouble(null, dims);
    final MLCell severity = new MLCell(null, dims);
    for (int i=0; i<N; ++i)
    {
        setCellText(time, i, TimestampHelper.format(times.get(i)));
        value.set(values.get(i), i);
        setCellText(severity, i, severities.get(i).toString());
    }
    struct.setField("name", new MLChar(null, name));
    struct.setField("time", time);
    struct.setField("value", value);
    struct.setField("severity", severity);
    return struct;
}
 

import com.jmatio.types.MLCell; //导入依赖的package包/类
/**
 * Write a CSV wordIndex to a {@link MLCell} writen to a .mat data file
 * 
 * @param path
 * @throws IOException
 */
public static void writeToMatlab(String path) throws IOException {
	final Path wordMatPath = new Path(path + "/words/wordIndex.mat");
	final FileSystem fs = HadoopToolsUtil.getFileSystem(wordMatPath);
	final LinkedHashMap<String, IndependentPair<Long, Long>> wordIndex = readWordCountLines(path);
	final MLCell wordCell = new MLCell("words", new int[] { wordIndex.size(), 2 });

	System.out.println("... reading words");
	for (final Entry<String, IndependentPair<Long, Long>> ent : wordIndex.entrySet()) {
		final String word = ent.getKey();
		final int wordCellIndex = (int) (long) ent.getValue().secondObject();
		final long count = ent.getValue().firstObject();
		wordCell.set(new MLChar(null, word), wordCellIndex, 0);
		wordCell.set(new MLDouble(null, new double[][] { new double[] { count } }), wordCellIndex, 1);
	}
	final ArrayList<MLArray> list = new ArrayList<MLArray>();
	list.add(wordCell);
	new MatFileWriter(Channels.newChannel(fs.create(wordMatPath)), list);
}
 

import com.jmatio.types.MLCell; //导入依赖的package包/类
/**
 * Write a CSV timeIndex to a {@link MLCell} writen to a .mat data file
 * @param path
 * @throws IOException
 */
public static void writeToMatlab(String path) throws IOException {
	Path timeMatPath = new Path(path + "/times/timeIndex.mat");
	FileSystem fs = HadoopToolsUtil.getFileSystem(timeMatPath);
	LinkedHashMap<Long, IndependentPair<Long, Long>> timeIndex = readTimeCountLines(path);
	MLCell timeCell = new MLCell("times",new int[]{timeIndex.size(),2});
	
	System.out.println("... reading times");
	for (Entry<Long, IndependentPair<Long, Long>> ent : timeIndex.entrySet()) {
		long time = (long)ent.getKey();
		int timeCellIndex = (int)(long)ent.getValue().secondObject();
		long count = ent.getValue().firstObject();
		timeCell.set(new MLDouble(null, new double[][]{new double[]{time}}), timeCellIndex,0);
		timeCell.set(new MLDouble(null, new double[][]{new double[]{count}}), timeCellIndex,1);
	}
	ArrayList<MLArray> list = new ArrayList<MLArray>();
	list.add(timeCell);
	new MatFileWriter(Channels.newChannel(fs.create(timeMatPath)),list );
}
 

import com.jmatio.types.MLCell; //导入依赖的package包/类
public static void main(String[] args) throws IOException {
	// MLCell cell = new MLCell("data", new int[]{100000,1});
	// Random r = new Random();
	// for (int i = 0; i < 100000; i++) {
	// MLCell inner = new MLCell(null, new int[]{2,1});
	// inner.set(new MLChar(null,"Dummy String" + r.nextDouble()), 0, 0);
	// MLDouble d = new MLDouble(null, new double[][]{new
	// double[]{r.nextDouble()}});
	// inner.set(d, 1, 0);
	// cell.set(inner, i,0);
	// }
	// ArrayList<MLArray> arr = new ArrayList<MLArray>();
	// arr.add(cell);
	// new MatFileWriter( "mat_file.mat", arr);
	final MatFileReader reader = new MatFileReader("/Users/ss/Development/python/storm-spams/XYs.mat");
	final Map<String, MLArray> content = reader.getContent();
	final MLCell cell = (MLCell) content.get("XYs");
	System.out.println(cell.get(0, 0));
	System.out.println(cell.get(0, 1));
}
 

import com.jmatio.types.MLCell; //导入依赖的package包/类
private void prepareFolds() {

		final MLArray setfolds = this.content.get("set_fold");
		if(setfolds==null) return;
		if (setfolds.isCell()) {
			this.folds = new ArrayList<Fold>();
			final MLCell foldcells = (MLCell) setfolds;
			final int nfolds = foldcells.getM();
			System.out.println(String.format("Found %d folds", nfolds));
			for (int i = 0; i < nfolds; i++) {
				final MLDouble training = (MLDouble) foldcells.get(i, 0);
				final MLDouble test = (MLDouble) foldcells.get(i, 1);
				final MLDouble validation = (MLDouble) foldcells.get(i, 2);
				final Fold f = new Fold(toIntArray(training), toIntArray(test),
						toIntArray(validation));
				folds.add(f);
			}
		} else {
			throw new RuntimeException(
					"Can't find set_folds in expected format");
		}
	}
 

import com.jmatio.types.MLCell; //导入依赖的package包/类
private MLCell histoDataHeadersAsMLChar(List<String> histoDataHeaders) {
    int colsSize = histoDataHeaders.size() - 2;
    MLCell injections = new MLCell("inj_ID", new int[]{1, colsSize});
    int i = 0;
    for (String colkey : histoDataHeaders) {
        if (colkey.equals("forecastTime") || colkey.equals("datetime")) {
            continue;
        }
        injections.set(new MLChar("", colkey), 0, i);
        i++;
    }
    return injections;
}
 

import com.jmatio.types.MLCell; //导入依赖的package包/类
private MLCell injectionCountriesAsMLChar(List<StochasticVariable> stochasticVariables) {
    int colsSize = stochasticVariables.size() * 2;
    MLCell injectionsCountries = new MLCell("nat_ID", new int[]{1, colsSize});
    int i = 0;
    for (StochasticVariable injection : stochasticVariables) {
        injectionsCountries.set(new MLChar("", injection.getCountry().name()), 0, i);
        i++;
        injectionsCountries.set(new MLChar("", injection.getCountry().name()), 0, i); // twice, for P and Q
        i++;
    }
    return injectionsCountries;
}
 

import com.jmatio.types.MLCell; //导入依赖的package包/类
public void writeMatlabFile2() throws Exception
{
    // Example values
    final VType[] values = new VType[10];
    for (int i=0; i<10; ++i)
        values[i] = new ArchiveVNumber(VTypeHelper.getTimestamp(null), AlarmSeverity.NONE, "OK",
                ValueFactory.displayNone(),
                Math.exp(-((5.0-i)*(5.0-i))) );

    // Turn values into Matlab data
    final int[] dims = new int[] { values.length, 1 };
    final MLDouble value = new MLDouble(null, dims);
    final MLCell time = new MLCell(null, dims);
    final MLCell severity = new MLCell(null, dims);
    final MLCell status = new MLCell(null, dims);
    for (int i=0; i<values.length; ++i)
    {
        value.set(VTypeHelper.toDouble(values[i]), i);
        setCellText(time, i, TimestampHelper.format(VTypeHelper.getTimestamp(values[i])));
        setCellText(severity, i, VTypeHelper.getSeverity(values[i]).toString());
        setCellText(severity, i, VTypeHelper.getMessage(values[i]));
    }
    final MLStructure struct = new MLStructure("channel0", new int[] { 1, 1 });
    struct.setField("value", value);
    struct.setField("time", time);
    struct.setField("severity", severity);
    struct.setField("status", status);

    // Write to file
    final MatFileIncrementalWriter writer = new MatFileIncrementalWriter("mat_file2.mat");
    writer.write(struct);
    writer.close();
}
 

import com.jmatio.types.MLCell; //导入依赖的package包/类
private void prepareVocabulary() {
	this.keepIndex = new HashSet<Integer>();

	final MLDouble keepIndex = (MLDouble) this.content.get("voc_keep_terms_index");
	if(keepIndex != null){
		final double[] filterIndexArr = keepIndex.getArray()[0];
		
		for (final double d : filterIndexArr) {
			this.keepIndex.add((int) d - 1);
		}
		
	}
	
	final MLCell vocLoaded = (MLCell) this.content.get("voc");
	if(vocLoaded!=null){
		this.indexToVoc = new HashMap<Integer, Integer>();
		final ArrayList<MLArray> vocArr = vocLoaded.cells();
		int index = 0;
		int vocIndex = 0;
		this.voc = new HashMap<Integer, String>();
		for (final MLArray vocArrItem : vocArr) {
			final MLChar vocChar = (MLChar) vocArrItem;
			final String vocString = vocChar.getString(0);
			if (filter && this.keepIndex.contains(index)) {
				this.voc.put(vocIndex, vocString);
				this.indexToVoc.put(index, vocIndex);
				vocIndex++;
			}
			index++;
		}
	} else {
		
	}
}
 

import com.jmatio.types.MLCell; //导入依赖的package包/类
private LinkedList<IndependentMeasurement> getMeasurements(MatFileReader matFileReader, String sourcePath) {
    LinkedList<IndependentMeasurement> measurements = new LinkedList<IndependentMeasurement>();

    try {
        MLStructure root = (MLStructure) matFileReader.getMLArray(rootKey);
        MLCell accX = (MLCell) root.getField(accXKey);
        MLCell accY = (MLCell) root.getField(accYKey);
        MLCell accZ = (MLCell) root.getField(accZKey);
        MLCell label = (MLCell) root.getField(labelKey);
        fillSampleProperyLists(root);

        int nOfSamples = (int) Math.round(((MLDouble) root.getField(nOfSamplesKey)).get(0));
        for (int i = 0; i < nOfSamples; i++) {
            double[] accXValues = getSampleRow(accX, i);
            double[] accYValues = getSampleRow(accY, i);
            double[] accZValues = getSampleRow(accZ, i);
            double[] labelValues = getSampleRow(label, i);
            List<IndependentMeasurement> newMeasurements = getMeasurementsFromSample(accXValues, accYValues, accZValues,
                    labelValues, i);
            measurements.addAll(newMeasurements);
        }
    } catch (NullPointerException e) {
        throwInvalidFormatException(sourcePath, e);
    }

    return measurements;
}
 

import com.jmatio.types.MLCell; //导入依赖的package包/类
private void setCellText(final MLCell cell, final int index, final String text)
{
    cell.set(new MLChar(null, text), index);
}
 

import com.jmatio.types.MLCell; //导入依赖的package包/类
public MatlabFileDataGenerator(File matfile) throws IOException {
	MatFileReader reader = new MatFileReader(matfile);
	Map<String, MLArray> content = reader.getContent();
	this.data= (MLCell) content.get("XYs");
	this.index = 0;
}
 

import com.jmatio.types.MLCell; //导入依赖的package包/类
private double[] getSampleRow(MLCell rows, int i) {
    MLDouble sampleXML = (MLDouble) rows.cells().get(i);
    double[] values = new DoubleMatrix(sampleXML.getArray()).toArray();
    return values;
}