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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) 2011
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 java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import de.lmu.ifi.dbs.elki.data.NumberVector;
import de.lmu.ifi.dbs.elki.database.relation.Relation;
import de.lmu.ifi.dbs.elki.result.AbstractHierarchicalResult;
import de.lmu.ifi.dbs.elki.result.ResultUtil;
import de.lmu.ifi.dbs.elki.utilities.DatabaseUtil;
import de.lmu.ifi.dbs.elki.visualization.VisualizationTask;
import de.lmu.ifi.dbs.elki.visualization.gui.overview.PlotItem;
import de.lmu.ifi.dbs.elki.visualization.projections.Projection1D;
import de.lmu.ifi.dbs.elki.visualization.projections.Simple1D;
import de.lmu.ifi.dbs.elki.visualization.scales.LinearScale;
import de.lmu.ifi.dbs.elki.visualization.scales.Scales;
import de.lmu.ifi.dbs.elki.visualization.visualizers.visunproj.LabelVisFactory;
/**
* ScatterPlotProjector is responsible for producing a set of scatterplot
* visualizations.
*
* @author Erich Schubert
*
* @param <V> Vector type
*/
public class HistogramProjector<V extends NumberVector<?, ?>> extends AbstractHierarchicalResult implements Projector {
/**
* Relation we project
*/
Relation<V> rel;
/**
* Database dimensionality
*/
int dmax;
/**
* Axis scales
*/
LinearScale[] scales;
/**
* Constructor.
*
* @param rel Relation
* @param maxdim Maximum dimension to use
*/
public HistogramProjector(Relation<V> rel, int maxdim) {
super();
this.rel = rel;
this.dmax = maxdim;
this.scales = Scales.calcScales(rel);
assert (maxdim <= DatabaseUtil.dimensionality(rel)) : "Requested dimensionality larger than data dimensionality?!?";
}
@Override
public Collection<PlotItem> arrange() {
List<PlotItem> layout = new ArrayList<PlotItem>(1);
List<VisualizationTask> tasks = ResultUtil.filterResults(this, VisualizationTask.class);
if (tasks.size() > 0){
PlotItem master = new PlotItem(dmax + .1, .5 + .1, null);
for(int d1 = 1; d1 <= dmax; d1++) {
Projection1D proj = new Simple1D(scales, d1);
final PlotItem it = new PlotItem(d1 - 1 + .1, 0. + .1, 1., .5, proj);
it.visualizations = tasks;
master.subitems.add(it);
}
layout.add(master);
for(int d1 = 1; d1 <= dmax; d1++) {
PlotItem it = new PlotItem(d1 - 1 + .1, 0, 1., .1, null);
final VisualizationTask task = new VisualizationTask("", null, null, new LabelVisFactory(DatabaseUtil.getColumnLabel(rel, d1)));
task.height = .1;
task.width = 1;
task.put(VisualizationTask.META_NODETAIL, true);
it.visualizations.add(task);
master.subitems.add(it);
}
}
return layout;
}
@Override
public String getLongName() {
return "Axis plot";
}
@Override
public String getShortName() {
return "axisplot";
}
/**
* Get the relation we project.
*
* @return Relation
*/
public Relation<V> getRelation() {
return rel;
}
}
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