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package de.lmu.ifi.dbs.elki.visualization.projector;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2015
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import de.lmu.ifi.dbs.elki.data.NumberVector;
import de.lmu.ifi.dbs.elki.data.spatial.SpatialComparable;
import de.lmu.ifi.dbs.elki.data.type.TypeUtil;
import de.lmu.ifi.dbs.elki.data.uncertain.UncertainObject;
import de.lmu.ifi.dbs.elki.database.relation.Relation;
import de.lmu.ifi.dbs.elki.database.relation.RelationUtil;
import de.lmu.ifi.dbs.elki.utilities.datastructures.hierarchy.FilteredIter;
import de.lmu.ifi.dbs.elki.utilities.datastructures.hierarchy.Hierarchy;
import de.lmu.ifi.dbs.elki.visualization.VisualizerContext;
import de.lmu.ifi.dbs.elki.visualization.VisualizationTree;
/**
* Produce parallel axes projections.
*
* @author Robert Rödler
*
* @apiviz.has ParallelPlotProjector
*/
public class ParallelPlotFactory implements ProjectorFactory {
/**
* Constructor.
*/
public ParallelPlotFactory() {
super();
}
@Override
public void processNewResult(VisualizerContext context, Object start) {
Hierarchy.Iter<Relation<?>> it = VisualizationTree.filterResults(context, start, Relation.class);
candidate: for(; it.valid(); it.advance()) {
Relation<?> rel = it.get();
// TODO: multi-relational parallel plots?
final int dim = dimensionality(rel);
if(dim <= 1) {
continue;
}
// Do not enable nested relations by default:
Hierarchy.Iter<Relation<?>> it2 = new FilteredIter<>(context.getHierarchy().iterAncestors(rel), Relation.class);
for(; it2.valid(); it2.advance()) {
// Parent relation
final Relation<?> rel2 = (Relation<?>) it2.get();
final int odim = dimensionality(rel2);
if(odim == dim) {
// TODO: add Actions instead?
continue candidate;
}
}
@SuppressWarnings("unchecked")
Relation<SpatialComparable> vrel = (Relation<SpatialComparable>) rel;
ParallelPlotProjector<SpatialComparable> proj = new ParallelPlotProjector<>(vrel);
context.addVis(vrel, proj);
}
}
private int dimensionality(Relation<?> rel) {
if(TypeUtil.NUMBER_VECTOR_FIELD.isAssignableFromType(rel.getDataTypeInformation())) {
@SuppressWarnings("unchecked")
Relation<NumberVector> vrel = (Relation<NumberVector>) rel;
return RelationUtil.dimensionality(vrel);
}
if(TypeUtil.UNCERTAIN_OBJECT_FIELD.isAssignableFromType(rel.getDataTypeInformation())) {
@SuppressWarnings("unchecked")
Relation<UncertainObject> vrel = (Relation<UncertainObject>) rel;
return RelationUtil.dimensionality(vrel);
}
// TODO: allow other spatial objects of fixed dimensionality!
return 0;
}
}
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