Examples with NumericHistogram org.locationtech.geowave.core.store.adapter.statistics.histogram.NumericHistogram used on opensource projects

Example 1 with NumericHistogram

use of org.locationtech.geowave.core.store.adapter.statistics.histogram.NumericHistogram in project geowave by locationtech.

the class GeoWaveStatisticsIT method testAddStatistic.

@Test
public void testAddStatistic() {
    final DataStore ds = dataStore.createDataStore();
    final NumericRangeStatistic longitudeRange = new NumericRangeStatistic(SimpleIngest.FEATURE_NAME, "Longitude");
    final NumericRangeStatistic latitudeRange = new NumericRangeStatistic(SimpleIngest.FEATURE_NAME, "Latitude");
    final TimeRangeStatistic timeRange = new TimeRangeStatistic(SimpleIngest.FEATURE_NAME, "TimeStamp");
    final NumericStatsStatistic latitudeStats = new NumericStatsStatistic(SimpleIngest.FEATURE_NAME, "Latitude");
    final BloomFilterStatistic latitudeBloomFilter = new BloomFilterStatistic(SimpleIngest.FEATURE_NAME, "Latitude");
    final NumericHistogramStatistic latitudeHistogram = new NumericHistogramStatistic(SimpleIngest.FEATURE_NAME, "Latitude");
    ds.addStatistic(longitudeRange, timeRange, latitudeStats, latitudeBloomFilter, latitudeHistogram);
    ds.addEmptyStatistic(latitudeRange);
    try (CloseableIterator<NumericRangeValue> iterator = ds.queryStatistics(StatisticQueryBuilder.newBuilder(NumericRangeStatistic.STATS_TYPE).typeName(SimpleIngest.FEATURE_NAME).fieldName("Longitude").build())) {
        assertTrue(iterator.hasNext());
        final NumericRangeValue value = iterator.next();
        assertEquals(-165.0, value.getMin(), 0.1);
        assertEquals(180.0, value.getMax(), 0.1);
        assertFalse(iterator.hasNext());
    }
    try (CloseableIterator<NumericRangeValue> iterator = ds.queryStatistics(StatisticQueryBuilder.newBuilder(NumericRangeStatistic.STATS_TYPE).typeName(SimpleIngest.FEATURE_NAME).fieldName("Latitude").build())) {
        // We only calculated stats for Longitude
        assertTrue(iterator.hasNext());
        assertFalse(iterator.next().isSet());
        assertFalse(iterator.hasNext());
    }
    final Interval interval = ds.getStatisticValue(timeRange);
    try (CloseableIterator<SimpleFeature> it = ds.query(VectorQueryBuilder.newBuilder().build())) {
        long min = Long.MAX_VALUE, max = Long.MIN_VALUE;
        while (it.hasNext()) {
            final long time = ((Date) it.next().getAttribute("TimeStamp")).getTime();
            min = Math.min(min, time);
            max = Math.max(max, time);
        }
        assertEquals(min, interval.getStart().toEpochMilli());
        assertEquals(max, interval.getEnd().toEpochMilli());
    }
    final Stats stats = ds.getStatisticValue(latitudeStats);
    assertEquals(20L, stats.count());
    assertEquals(-90.0, stats.min(), 0.1);
    assertEquals(85.0, stats.max(), 0.1);
    assertEquals(-0.5, stats.mean(), 0.1);
    assertEquals(53.47, stats.populationStandardDeviation(), 0.1);
    final BloomFilter<CharSequence> bloomFilter = ds.getStatisticValue(latitudeBloomFilter);
    boolean expectLat = true;
    for (double lat = -90; lat <= 90; lat += 5) {
        if (expectLat) {
            assertTrue(bloomFilter.mightContain(Double.toString(lat)));
        } else {
            assertFalse(bloomFilter.mightContain(Double.toString(lat)));
        }
        // and forth each iteration, 3 times it stays true at these latitudes
        if (!DoubleMath.fuzzyEquals(-40, lat, 0.1) && !DoubleMath.fuzzyEquals(25, lat, 0.1) && !DoubleMath.fuzzyEquals(80, lat, 0.1)) {
            expectLat = !expectLat;
        }
    }
    final NumericHistogram histogram = ds.getStatisticValue(latitudeHistogram);
    assertEquals(20L, histogram.getTotalCount(), 0.1);
    assertEquals(-90.0, histogram.getMinValue(), 0.1);
    assertEquals(85.0, histogram.getMaxValue(), 0.1);
    assertEquals(0.0, histogram.quantile(0.5), 0.1);
}