package de.lmu.ifi.dbs.elki.visualization.visualizers.optics;
/*
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.io.File;
import java.io.IOException;
import java.util.Iterator;
import org.apache.batik.util.SVGConstants;
import org.w3c.dom.Element;
import de.lmu.ifi.dbs.elki.distance.distancevalue.Distance;
import de.lmu.ifi.dbs.elki.distance.distancevalue.DoubleDistance;
import de.lmu.ifi.dbs.elki.logging.LoggingUtil;
import de.lmu.ifi.dbs.elki.result.HierarchicalResult;
import de.lmu.ifi.dbs.elki.result.Result;
import de.lmu.ifi.dbs.elki.result.ResultUtil;
import de.lmu.ifi.dbs.elki.utilities.iterator.IterableUtil;
import de.lmu.ifi.dbs.elki.visualization.VisualizationTask;
import de.lmu.ifi.dbs.elki.visualization.css.CSSClassManager.CSSNamingConflict;
import de.lmu.ifi.dbs.elki.visualization.opticsplot.OPTICSPlot;
import de.lmu.ifi.dbs.elki.visualization.projector.OPTICSProjector;
import de.lmu.ifi.dbs.elki.visualization.svg.SVGSimpleLinearAxis;
import de.lmu.ifi.dbs.elki.visualization.svg.SVGUtil;
import de.lmu.ifi.dbs.elki.visualization.visualizers.AbstractVisFactory;
import de.lmu.ifi.dbs.elki.visualization.visualizers.Visualization;
/**
* Visualize an OPTICS result by constructing an OPTICS plot for it.
*
* @author Erich Schubert
*
* @param <D> Distance type
*/
public class OPTICSPlotVisualizer<D extends Distance<D>> extends AbstractOPTICSVisualization<D> {
/**
* Name for this visualizer.
*/
private static final String NAME = "OPTICS Plot";
/**
* Constructor.
*
* @param task Visualization task
*/
public OPTICSPlotVisualizer(VisualizationTask task) {
super(task);
}
@Override
protected void redraw() {
makeLayerElement();
// addCSSClasses();
OPTICSPlot<D> opticsplot = optics.getOPTICSPlot(context);
File imgfile = null;
try {
imgfile = opticsplot.getAsTempFile();
}
catch(IOException e) {
LoggingUtil.exception("Could not generate OPTICS plot.", e);
}
Element itag = svgp.svgElement(SVGConstants.SVG_IMAGE_TAG);
SVGUtil.setAtt(itag, SVGConstants.SVG_IMAGE_RENDERING_ATTRIBUTE, SVGConstants.SVG_OPTIMIZE_SPEED_VALUE);
SVGUtil.setAtt(itag, SVGConstants.SVG_X_ATTRIBUTE, 0);
SVGUtil.setAtt(itag, SVGConstants.SVG_Y_ATTRIBUTE, 0);
SVGUtil.setAtt(itag, SVGConstants.SVG_WIDTH_ATTRIBUTE, plotwidth);
SVGUtil.setAtt(itag, SVGConstants.SVG_HEIGHT_ATTRIBUTE, plotheight);
itag.setAttributeNS(SVGConstants.XLINK_NAMESPACE_URI, SVGConstants.XLINK_HREF_QNAME, imgfile.toURI().toString());
layer.appendChild(itag);
try {
SVGSimpleLinearAxis.drawAxis(svgp, layer, opticsplot.getScale(), 0, plotheight, 0, 0, true, false, context.getStyleLibrary());
SVGSimpleLinearAxis.drawAxis(svgp, layer, opticsplot.getScale(), plotwidth, plotheight, plotwidth, 0, true, true, context.getStyleLibrary());
}
catch(CSSNamingConflict e) {
LoggingUtil.exception("CSS naming conflict for axes on OPTICS plot", e);
}
}
/**
* Factory class for OPTICS plot.
*
* @author Erich Schubert
*
* @apiviz.stereotype factory
* @apiviz.uses OPTICSPlotVisualizer oneway - - «create»
*/
public static class Factory extends AbstractVisFactory {
/**
* Constructor, adhering to
* {@link de.lmu.ifi.dbs.elki.utilities.optionhandling.Parameterizable}
*/
public Factory() {
super();
}
@Override
public void processNewResult(HierarchicalResult baseResult, Result result) {
Iterator<OPTICSProjector<?>> ops = ResultUtil.filteredResults(result, OPTICSProjector.class);
for(OPTICSProjector<?> p : IterableUtil.fromIterator(ops)) {
// Add plots, attach visualizer
final VisualizationTask task = new VisualizationTask(NAME, p, null, this);
task.put(VisualizationTask.META_LEVEL, VisualizationTask.LEVEL_STATIC);
baseResult.getHierarchy().add(p, task);
}
}
@Override
public Visualization makeVisualization(VisualizationTask task) {
return new OPTICSPlotVisualizer<DoubleDistance>(task);
}
@Override
public boolean allowThumbnails(VisualizationTask task) {
// Don't use thumbnails
return false;
}
}
}