Examples with VectorTypeInformation de.lmu.ifi.dbs.elki.data.type.VectorTypeInformation used on opensource projects

Example 1 with VectorTypeInformation

use of de.lmu.ifi.dbs.elki.data.type.VectorTypeInformation in project elki by elki-project.

the class FilterUtil method guessFactory.

/**
 * Try to guess the appropriate factory.
 *
 * @param in Input type
 * @param <V> Vector type
 * @return Factory
 */
@SuppressWarnings("unchecked")
public static <V extends NumberVector> NumberVector.Factory<V> guessFactory(SimpleTypeInformation<V> in) {
    NumberVector.Factory<V> factory = null;
    if (in instanceof VectorTypeInformation) {
        factory = (NumberVector.Factory<V>) ((VectorTypeInformation<V>) in).getFactory();
    }
    if (factory == null) {
        // FIXME: hack. Add factories to simple type information, too?
        try {
            Field f = in.getRestrictionClass().getField("FACTORY");
            factory = (NumberVector.Factory<V>) f.get(null);
        } catch (Exception e) {
            LoggingUtil.warning("Cannot determine factory for type " + in.getRestrictionClass(), e);
        }
    }
    return factory;
}

Example 2 with VectorTypeInformation

use of de.lmu.ifi.dbs.elki.data.type.VectorTypeInformation in project elki by elki-project.

the class VectorDimensionalityFilter method updateMeta.

/**
 * Update metadata.
 */
private void updateMeta() {
    meta = new BundleMeta();
    BundleMeta origmeta = source.getMeta();
    for (int i = 0; i < origmeta.size(); i++) {
        SimpleTypeInformation<?> type = origmeta.get(i);
        if (column < 0) {
            // Test whether this type matches
            if (TypeUtil.NUMBER_VECTOR_VARIABLE_LENGTH.isAssignableFromType(type)) {
                if (type instanceof VectorFieldTypeInformation) {
                    @SuppressWarnings("unchecked") final VectorFieldTypeInformation<V> castType = (VectorFieldTypeInformation<V>) type;
                    if (dim != -1 && castType.mindim() > dim) {
                        throw new AbortException("Would filter all vectors: minimum dimensionality " + castType.mindim() + " > desired dimensionality " + dim);
                    }
                    if (dim != -1 && castType.maxdim() < dim) {
                        throw new AbortException("Would filter all vectors: maximum dimensionality " + castType.maxdim() + " < desired dimensionality " + dim);
                    }
                    if (dim == -1) {
                        dim = castType.mindim();
                    }
                    if (castType.mindim() == castType.maxdim()) {
                        meta.add(castType);
                        column = i;
                        continue;
                    }
                }
                @SuppressWarnings("unchecked") final VectorTypeInformation<V> castType = (VectorTypeInformation<V>) type;
                if (dim != -1) {
                    meta.add(new VectorFieldTypeInformation<>(FilterUtil.guessFactory(castType), dim, dim, castType.getSerializer()));
                } else {
                    LOG.warning("No dimensionality yet for column " + i);
                    meta.add(castType);
                }
                column = i;
                continue;
            }
        }
        meta.add(type);
    }
}