Examples with VString org.diirt.vtype.VString used on opensource projects

Example 1 with VString

use of org.diirt.vtype.VString in project yamcs-studio by yamcs.

the class VTableFactory method union.

public static VTable union(VString extraColumnName, final VStringArray extraColumnData, final VTable... tables) {
    // Prune nulls
    final List<String> extraColumnDataPruned = new ArrayList<>();
    final List<VTable> tablesPruned = new ArrayList<>();
    for (int i = 0; i < tables.length; i++) {
        VTable table = tables[i];
        if (table != null) {
            extraColumnDataPruned.add(extraColumnData.getData().get(i));
            tablesPruned.add(table);
        }
    }
    if (tablesPruned.isEmpty()) {
        return null;
    }
    List<String> columnNames = new ArrayList<>();
    List<Class<?>> columnTypes = new ArrayList<>();
    List<Map<String, VColumn>> tableColumns = new ArrayList<>();
    if (extraColumnName != null) {
        columnNames.add(extraColumnName.getValue());
        columnTypes.add(String.class);
    }
    int[] tableOffsets = new int[tablesPruned.size()];
    int currentOffset = 0;
    for (int k = 0; k < tablesPruned.size(); k++) {
        VTable table = tablesPruned.get(k);
        if (table == null) {
            continue;
        }
        tableOffsets[k] = currentOffset;
        currentOffset += table.getRowCount();
        tableColumns.add(VColumn.columnMap(table));
        for (int i = 0; i < table.getColumnCount(); i++) {
            String name = table.getColumnName(i);
            if (!columnNames.contains(name)) {
                columnNames.add(name);
                columnTypes.add(table.getColumnType(i));
            }
        }
    }
    final int rowCount = currentOffset;
    final ListInt offsets = new ArrayInt(tableOffsets);
    List<Object> columnData = new ArrayList<>();
    if (extraColumnName != null) {
        columnData.add(new AbstractList<String>() {

            @Override
            public String get(int index) {
                int nTable = ListNumbers.binarySearchValueOrLower(offsets, index);
                return extraColumnDataPruned.get(nTable);
            }

            @Override
            public int size() {
                return rowCount;
            }
        });
    }
    for (int i = 1; i < columnNames.size(); i++) {
        String columnName = columnNames.get(i);
        List<VColumn> columns = new ArrayList<>();
        for (int j = 0; j < tableColumns.size(); j++) {
            columns.add(tableColumns.get(j).get(columnName));
        }
        columnData.add(VColumn.combineData(columnTypes.get(i), rowCount, offsets, columns));
    }
    return ValueFactory.newVTable(columnTypes, columnNames, columnData);
}

Example 2 with VString

use of org.diirt.vtype.VString in project yamcs-studio by yamcs.

the class CaHistogramFormulaFunction method calculate.

@Override
public Object calculate(final List<Object> args) {
    // Retrieve the new name
    VString value = (VString) args.get(0);
    String newName = null;
    if (value != null) {
        newName = value.getValue();
    }
    return calculateImpl(newName);
}

Example 3 with VString

use of org.diirt.vtype.VString in project yamcs-studio by yamcs.

the class Histogram2DOfFormulaFunction method calculate.

@Override
public Object calculate(List<Object> args) {
    if (NullUtils.containsNull(args)) {
        return null;
    }
    VTable table = (VTable) args.get(0);
    VString yColumnName = (VString) args.get(1);
    VString xColumnName = (VString) args.get(2);
    ListNumber yData = ValueUtil.numericColumnOf(table, yColumnName.getValue());
    ListNumber xData = ValueUtil.numericColumnOf(table, xColumnName.getValue());
    int nPoints = Math.min(yData.size(), xData.size());
    Statistics xStats = StatisticsUtil.statisticsOf(xData);
    Statistics yStats = StatisticsUtil.statisticsOf(yData);
    int nXBins = 20;
    int nYBins = 20;
    Range aggregatedXRange = Ranges.aggregateRange(xStats.getRange(), previousXRange);
    Range aggregatedYRange = Ranges.aggregateRange(yStats.getRange(), previousYRange);
    Range xRange;
    Range yRange;
    if (Ranges.overlap(aggregatedXRange, xStats.getRange()) >= 0.90) {
        xRange = aggregatedXRange;
    } else {
        xRange = xStats.getRange();
    }
    if (Ranges.overlap(aggregatedYRange, yStats.getRange()) >= 0.90) {
        yRange = aggregatedYRange;
    } else {
        yRange = yStats.getRange();
    }
    double minXValueRange = xRange.getMinimum();
    double maxXValueRange = xRange.getMaximum();
    double minYValueRange = yRange.getMinimum();
    double maxYValueRange = yRange.getMaximum();
    ListNumber xBoundaries = ListNumbers.linearListFromRange(minXValueRange, maxXValueRange, nXBins + 1);
    ListNumber yBoundaries = ListNumbers.linearListFromRange(minYValueRange, maxYValueRange, nYBins + 1);
    int[] binData = new int[nXBins * nYBins];
    double maxCount = 0;
    for (int i = 0; i < nPoints; i++) {
        double xValue = xData.getDouble(i);
        double yValue = yData.getDouble(i);
        // Check value in range
        if (xRange.contains(xValue)) {
            if (yRange.contains(yValue)) {
                int xBin = (int) Math.floor(xRange.normalize(xValue) * nXBins);
                int yBin = (int) Math.floor(yRange.normalize(yValue) * nYBins);
                if (xBin == nXBins) {
                    xBin--;
                }
                if (yBin == nYBins) {
                    yBin--;
                }
                int binIndex = yBin * nXBins + xBin;
                binData[binIndex]++;
                if (binData[binIndex] > maxCount) {
                    maxCount = binData[binIndex];
                }
            }
        }
    }
    // time based "forget"
    if (previousMaxCount > maxCount && (previousMaxCount < maxCount * 2.0 || maxCount < 9)) {
        maxCount = previousMaxCount;
    }
    previousMaxCount = maxCount;
    previousXRange = xRange;
    previousXData = xData;
    previousYData = yData;
    previousResult = newVNumberArray(new ArrayInt(binData), new ArrayInt(nYBins, nXBins), Arrays.asList(newDisplay(yBoundaries, ""), newDisplay(xBoundaries, "")), alarmNone(), timeNow(), newDisplay(0.0, 0.0, 0.0, "count", NumberFormats.format(0), maxCount, maxCount, maxCount, Double.NaN, Double.NaN));
    return previousResult;
}

Example 4 with VString

use of org.diirt.vtype.VString in project yamcs-studio by yamcs.

the class ChannelFormulaFunction method calculate.

@Override
public Object calculate(final List<Object> args) {
    // Retrieve the new name
    VString value = (VString) args.get(0);
    String newName = null;
    if (value != null) {
        newName = value.getValue();
    }
    // If the name does not match, disconnect and connect
    if (!Objects.equals(newName, previousName)) {
        // Disconnect previous
        if (currentExpression != null) {
            getDirector().disconnectReadExpression(currentExpression);
            currentExpression = null;
        }
        // Connect new
        if (newName != null) {
            currentExpression = channel(newName, Object.class);
            getDirector().connectReadExpression(currentExpression);
        }
        previousName = newName;
    }
    // Return value
    if (newName == null) {
        return null;
    }
    return currentExpression.getFunction().readValue();
}

Example 5 with VString

use of org.diirt.vtype.VString in project yamcs-studio by yamcs.

the class ColumnFromListNumberGeneratorFunction method calculate.

@Override
public Object calculate(final List<Object> args) {
    VString name = (VString) args.get(0);
    ListNumberProvider data = (ListNumberProvider) args.get(1);
    if (name == null || data == null) {
        return null;
    }
    return VTableFactory.column(name.getValue(), data);
}