/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2014, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library 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
* Lesser General Public License for more details.
*/
package org.geotools.process.spatialstatistics;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.geotools.data.simple.SimpleFeatureCollection;
import org.geotools.geometry.jts.ReferencedEnvelope;
import org.geotools.process.Process;
import org.geotools.process.ProcessException;
import org.geotools.process.ProcessFactory;
import org.geotools.process.spatialstatistics.core.Params;
import org.geotools.process.spatialstatistics.pattern.CircularBinningOperation;
import org.geotools.util.logging.Logging;
import org.opengis.filter.expression.Expression;
import org.opengis.util.ProgressListener;
/**
* Performs rectangular binning.
*
* @author Minpa Lee, MangoSystem
*
* @source $URL$
*/
public class CircularBinningProcess extends AbstractStatisticsProcess {
protected static final Logger LOGGER = Logging.getLogger(CircularBinningProcess.class);
public CircularBinningProcess(ProcessFactory factory) {
super(factory);
}
public ProcessFactory getFactory() {
return factory;
}
public static SimpleFeatureCollection process(SimpleFeatureCollection features,
Expression weight, ReferencedEnvelope bbox, Double radius, Boolean validGrid,
ProgressListener monitor) {
Map<String, Object> map = new HashMap<String, Object>();
map.put(CircularBinningProcessFactory.features.key, features);
map.put(CircularBinningProcessFactory.weight.key, weight);
map.put(CircularBinningProcessFactory.bbox.key, bbox);
map.put(CircularBinningProcessFactory.radius.key, radius);
map.put(CircularBinningProcessFactory.validGrid.key, validGrid);
Process process = new CircularBinningProcess(null);
Map<String, Object> resultMap;
try {
resultMap = process.execute(map, monitor);
return (SimpleFeatureCollection) resultMap
.get(CircularBinningProcessFactory.RESULT.key);
} catch (ProcessException e) {
LOGGER.log(Level.FINER, e.getMessage(), e);
}
return null;
}
@Override
public Map<String, Object> execute(Map<String, Object> input, ProgressListener monitor)
throws ProcessException {
SimpleFeatureCollection features = (SimpleFeatureCollection) Params.getValue(input,
CircularBinningProcessFactory.features, null);
if (features == null) {
throw new NullPointerException("features parameter required");
}
Expression weight = (Expression) Params.getValue(input,
CircularBinningProcessFactory.weight, null);
ReferencedEnvelope bbox = (ReferencedEnvelope) Params.getValue(input,
CircularBinningProcessFactory.bbox, null);
Double radius = (Double) Params.getValue(input, CircularBinningProcessFactory.radius, null);
Boolean validGrid = (Boolean) Params.getValue(input,
CircularBinningProcessFactory.validGrid,
CircularBinningProcessFactory.validGrid.sample);
// start process
if (bbox == null || bbox.isEmpty()) {
bbox = features.getBounds();
}
if (radius == null || radius <= 0) {
radius = (Math.min(bbox.getWidth(), bbox.getHeight()) / 250.0d) / 2.0d;
LOGGER.log(Level.WARNING, "The default width / height is " + radius);
}
SimpleFeatureCollection resultFc = null;
try {
CircularBinningOperation process = new CircularBinningOperation();
process.setOnlyValidGrid(validGrid);
resultFc = process.execute(features, weight, bbox, radius);
} catch (IOException e) {
throw new ProcessException(e);
}
// end process
Map<String, Object> resultMap = new HashMap<String, Object>();
resultMap.put(CircularBinningProcessFactory.RESULT.key, resultFc);
return resultMap;
}
}