/*
* 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.process.Process;
import org.geotools.process.ProcessException;
import org.geotools.process.ProcessFactory;
import org.geotools.process.spatialstatistics.core.Params;
import org.geotools.process.spatialstatistics.distribution.StandardDistanceOperation;
import org.geotools.util.logging.Logging;
import org.opengis.util.ProgressListener;
/**
* Measures the degree to which features are concentrated or dispersed around the geometric mean center.
*
* @author Minpa Lee, MangoSystem
*
* @source $URL$
*/
public class SDProcess extends AbstractStatisticsProcess {
protected static final Logger LOGGER = Logging.getLogger(SDProcess.class);
public SDProcess(ProcessFactory factory) {
super(factory);
}
public ProcessFactory getFactory() {
return factory;
}
public static SimpleFeatureCollection process(SimpleFeatureCollection inputFeatures,
String circleSize, String weightField, String caseField, ProgressListener monitor) {
Map<String, Object> map = new HashMap<String, Object>();
map.put(SDProcessFactory.inputFeatures.key, inputFeatures);
map.put(SDProcessFactory.circleSize.key, circleSize);
map.put(SDProcessFactory.weightField.key, weightField);
map.put(SDProcessFactory.caseField.key, caseField);
Process process = new SDProcess(null);
Map<String, Object> resultMap;
try {
resultMap = process.execute(map, monitor);
return (SimpleFeatureCollection) resultMap.get(SDProcessFactory.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 inputFeatures = (SimpleFeatureCollection) Params.getValue(input,
SDProcessFactory.inputFeatures, null);
if (inputFeatures == null) {
throw new NullPointerException("inputFeatures parameters required");
}
String weightField = (String) Params.getValue(input, SDProcessFactory.weightField, null);
String caseField = (String) Params.getValue(input, SDProcessFactory.caseField, null);
String circleSize = (String) Params.getValue(input, SDProcessFactory.circleSize,
SDProcessFactory.circleSize.sample);
// start process
// 1_STANDARD_DEVIATION
double stdDeviation = 1.0;
if (circleSize.contains("2")) {
stdDeviation = 2.0;
} else if (circleSize.contains("3")) {
stdDeviation = 3.0;
}
SimpleFeatureCollection resultFc = null;
try {
StandardDistanceOperation process = new StandardDistanceOperation();
process.setStdDeviation(stdDeviation);
resultFc = process.execute(inputFeatures, weightField, caseField);
} catch (IOException e) {
throw new ProcessException(e);
}
// end process
Map<String, Object> resultMap = new HashMap<String, Object>();
resultMap.put(SDProcessFactory.RESULT.key, resultFc);
return resultMap;
}
}