Examples with IStarGroupDataProvider gaiasky.data.group.IStarGroupDataProvider used on opensource projects

Example 1 with IStarGroupDataProvider

use of gaiasky.data.group.IStarGroupDataProvider in project gaiasky by langurmonkey.

the class StarGroup method initialize.

public void initialize() {
    // Load data
    try {
        Class<?> clazz = Class.forName(provider);
        IStarGroupDataProvider provider = (IStarGroupDataProvider) clazz.getConstructor().newInstance();
        provider.setProviderParams(providerParams);
        if (factor == null)
            factor = 1d;
        // Set data, generate index
        List<IParticleRecord> l = provider.loadData(datafile, factor);
        this.setData(l);
    } catch (Exception e) {
        Logger.getLogger(this.getClass()).error(e);
        pointData = null;
    }
    computeMeanPosition();
    setLabelPosition();
}

Example 2 with IStarGroupDataProvider

use of gaiasky.data.group.IStarGroupDataProvider in project gaiasky by langurmonkey.

the class OctreeGeneratorRun method generateOctree.

private OctreeNode generateOctree() throws IOException, InstantiationException, IllegalAccessException, ClassNotFoundException, NoSuchMethodException, InvocationTargetException {
    long startMs = TimeUtils.millis();
    OctreeGeneratorParams ogp = new OctreeGeneratorParams(maxPart, postprocess, childCount, parentCount);
    IOctreeGenerator og = new OctreeGeneratorMag(ogp);
    List<IParticleRecord> listLoader = null, list;
    Map<Long, Integer> xmatchTable = null;
    long[] countsPerMagGaia = null;
    // 
    if (loaderClass != null) {
        String fullLoaderClass = "gaiasky.data.group." + loaderClass;
        IStarGroupDataProvider loader = (IStarGroupDataProvider) Class.forName(fullLoaderClass).getDeclaredConstructor().newInstance();
        loader.setOutputFormatVersion(outputVersion);
        loader.setColumns(columns);
        loader.setParallaxErrorFactorFaint(plxerrfaint);
        loader.setParallaxErrorFactorBright(plxerrbright);
        loader.setParallaxZeroPoint(plxzeropoint);
        loader.setFileNumberCap(fileNumCap);
        loader.setStarNumberCap(starNumCap);
        loader.setDistanceCap(distPcCap);
        loader.setAdditionalFiles(additionalFiles);
        loader.setRUWECap(ruwe);
        countsPerMagGaia = loader.getCountsPerMag();
        if (hip != null && xmatchFile != null && !xmatchFile.isEmpty()) {
            // Load xmatchTable
            xmatchTable = readXmatchTable(xmatchFile);
            if (!xmatchTable.isEmpty()) {
                // IDs which must be loaded regardless (we need them to update x-matched HIP stars)
                loader.setMustLoadIds(new HashSet<>(xmatchTable.keySet()));
            }
        }
        /* LOAD CATALOG */
        listLoader = loader.loadData(input);
    }
    // 
    if (hip != null) {
        STILDataProvider stil = new STILDataProvider();
        // All hip stars for which we have a Gaia star, bypass plx >= 0 condition in STILDataProvider
        if (xmatchTable != null && !xmatchTable.isEmpty()) {
            Set<Long> mustLoad = new HashSet<>();
            for (int hipNumber : xmatchTable.values()) {
                mustLoad.add(Long.valueOf(hipNumber));
            }
            stil.setMustLoadIds(mustLoad);
        }
        List<IParticleRecord> listHip = stil.loadData(hip);
        // Update HIP names using external source, if needed
        if (hipNamesDir != null) {
            HipNames hipNames = new HipNames();
            hipNames.load(Paths.get(hipNamesDir));
            Map<Integer, Array<String>> hn = hipNames.getHipNames();
            for (IParticleRecord pb : listHip) {
                IParticleRecord star = pb;
                if (hn.containsKey(star.hip())) {
                    Array<String> names = hn.get(star.hip());
                    for (String name : names) star.addName(name);
                }
            }
        }
        // Combine counts per magnitude
        long[] countsPerMagHip = stil.getCountsPerMag();
        combineCountsPerMag(countsPerMagGaia, countsPerMagHip);
        // Create HIP map
        Map<Integer, IParticleRecord> hipMap = new HashMap<>();
        for (IParticleRecord star : listHip) {
            hipMap.put(star.hip(), star);
        }
        // Check x-match file
        int hipnum = listHip.size();
        int starhits = 0;
        int notFoundHipStars = 0;
        Vector3d aux1 = new Vector3d();
        Vector3d aux2 = new Vector3d();
        if (listLoader != null) {
            for (IParticleRecord pb : listLoader) {
                IParticleRecord gaiaStar = pb;
                // Check if star is also in HIP catalog
                if (xmatchTable == null || !xmatchTable.containsKey(gaiaStar.id())) {
                    // No hit, add to main list
                    listHip.add(gaiaStar);
                } else {
                    // Update hipStar using gaiaStar data, only when:
                    int hipId = xmatchTable.get(gaiaStar.id());
                    if (hipMap.containsKey(hipId)) {
                        // Hip Star
                        IParticleRecord hipStar = hipMap.get(hipId);
                        // Check parallax errors
                        Double gaiaPllxErr = gaiaStar.getExtra("pllx_err");
                        Double hipPllxErr = hipStar.getExtra("e_plx");
                        if (gaiaPllxErr <= hipPllxErr) {
                            // SIZE
                            float size = gaiaStar.size();
                            // POSITION
                            double x = gaiaStar.x(), y = gaiaStar.y(), z = gaiaStar.z();
                            aux1.set(x, y, z);
                            boolean negativeGaiaDistance = Math.abs(aux1.len() - AbstractStarGroupDataProvider.NEGATIVE_DIST) < 1e-10;
                            if (negativeGaiaDistance) {
                                // Negative distance in Gaia star!
                                // Use Gaia position, HIP distance and name(s)
                                // Fetch Gaia RA/DEC
                                Coordinates.cartesianToSpherical(aux1, aux2);
                                double gaiaRA = aux2.x;
                                double gaiaDEC = aux2.y;
                                // Fetch HIP distance
                                aux1.set(hipStar.x(), hipStar.y(), hipStar.z());
                                Coordinates.cartesianToSpherical(aux1, aux2);
                                double hipDIST = aux2.z;
                                // Compute new cartesian position
                                aux1.set(gaiaRA, gaiaDEC, hipDIST);
                                Coordinates.sphericalToCartesian(aux1, aux2);
                                x = aux2.x;
                                y = aux2.y;
                                z = aux2.z;
                                size = hipStar.size();
                            }
                            hipStar.setId(gaiaStar.id());
                            hipStar.setPos(x, y, z);
                            hipStar.setVelocityVector(gaiaStar.pmx(), gaiaStar.pmy(), gaiaStar.pmz());
                            hipStar.setProperMotion(gaiaStar.mualpha(), gaiaStar.mudelta(), gaiaStar.radvel());
                            hipStar.setMag(gaiaStar.appmag(), gaiaStar.absmag());
                            hipStar.setCol(gaiaStar.col());
                            hipStar.setSize(size);
                            hipStar.addNames(gaiaStar.names());
                            starhits++;
                        }
                    } else {
                        notFoundHipStars++;
                    }
                }
            }
            logger.info(starhits + " of " + hipnum + " HIP stars' data updated due to being matched to a Gaia star (" + notFoundHipStars + " not found - negative parallax?)");
            // Free up some memory
            listLoader.clear();
        }
        // Main list is listHip
        list = listHip;
    } else {
        list = listLoader;
    }
    if (list == null || list.isEmpty()) {
        logger.info("No stars were loaded, please check out the parameters");
        return null;
    }
    long loadingMs = TimeUtils.millis();
    double loadingSecs = ((loadingMs - startMs) / 1000.0);
    logger.info("TIME STATS: Data loaded in " + loadingSecs + " seconds");
    logger.info("Generating octree with " + list.size() + " actual stars");
    // Pre-processing (sorting, removing too distant stars)
    Vector3d pos0 = new Vector3d();
    Iterator<IParticleRecord> it = list.iterator();
    while (it.hasNext()) {
        IParticleRecord s = it.next();
        double dist = pos0.set(s.x(), s.y(), s.z()).len();
        if (dist * Constants.U_TO_PC > distPcCap) {
            // Remove star
            it.remove();
        }
    }
    logger.info("Sorting list by magnitude with " + list.size() + " objects");
    list.sort(new StarBrightnessComparator());
    logger.info("Catalog sorting done");
    OctreeNode octree = og.generateOctree(list);
    PrintStream out = new PrintStream(System.out, true, StandardCharsets.UTF_8);
    out.println(octree.toString(true));
    long generatingMs = TimeUtils.millis();
    double generatingSecs = ((generatingMs - loadingMs) / 1000.0);
    logger.info("TIME STATS: Octree generated in " + generatingSecs + " seconds");
    /**
     * NUMBERS *
     */
    logger.info("Octree generated with " + octree.numNodesRec() + " octants and " + octree.numObjectsRec + " particles");
    logger.info(og.getDiscarded() + " particles have been discarded due to density");
    /**
     * CLEAN CURRENT OUT DIR *
     */
    File metadataFile = new File(outFolder, "metadata.bin");
    delete(metadataFile);
    File particlesFolder = new File(outFolder, "particles/");
    delete(particlesFolder);
    /**
     * WRITE METADATA *
     */
    metadataFile.createNewFile();
    logger.info("Writing metadata (" + octree.numNodesRec() + " nodes): " + metadataFile.getAbsolutePath());
    MetadataBinaryIO metadataWriter = new MetadataBinaryIO();
    metadataWriter.writeMetadata(octree, new FileOutputStream(metadataFile));
    /**
     * WRITE PARTICLES *
     */
    IStarGroupIO particleWriter = new StarGroupBinaryIO();
    particlesFolder.mkdirs();
    int version = outputVersion < BinaryDataProvider.MIN_OUTPUT_VERSION || outputVersion > BinaryDataProvider.MAX_OUTPUT_VERSION ? BinaryDataProvider.DEFAULT_OUTPUT_VERSION : outputVersion;
    logger.info("Using output format version " + version);
    writeParticlesToFiles(particleWriter, octree, version);
    long writingMs = TimeUtils.millis();
    double writingSecs = (writingMs - generatingMs) / 1000.0;
    double totalSecs = loadingSecs + generatingSecs + writingSecs;
    int[][] stats = octree.stats();
    NumberFormat formatter = new DecimalFormat("##########0.0000");
    if (countsPerMagGaia != null) {
        logger.info("=========================");
        logger.info("STAR COUNTS PER MAGNITUDE");
        logger.info("=========================");
        for (int level = 0; level < countsPerMagGaia.length; level++) {
            logger.info("Magnitude " + level + ": " + countsPerMagGaia[level] + " stars (" + formatter.format((double) countsPerMagGaia[level] * 100d / (double) list.size()) + "%)");
        }
        logger.info();
    }
    logger.info("============");
    logger.info("OCTREE STATS");
    logger.info("============");
    logger.info("Octants: " + octree.numNodesRec());
    logger.info("Particles: " + list.size());
    logger.info("Depth: " + octree.getMaxDepth());
    int level = 0;
    for (int[] levelinfo : stats) {
        logger.info("   Level " + level + ": " + levelinfo[0] + " octants, " + levelinfo[1] + " stars (" + formatter.format((double) levelinfo[1] * 100d / (double) list.size()) + "%)");
        level++;
    }
    logger.info();
    logger.info("================");
    logger.info("FINAL TIME STATS");
    logger.info("================");
    logger.info("Loading: " + loadingSecs + " secs (" + formatTimeSecs((long) loadingSecs) + ")");
    logger.info("Generating: " + generatingSecs + " secs (" + formatTimeSecs((long) generatingSecs) + ")");
    logger.info("Writing: " + writingSecs + " secs (" + formatTimeSecs((long) writingSecs) + ")");
    logger.info("Total: " + totalSecs + " secs (" + formatTimeSecs((long) totalSecs) + ")");
    return octree;
}