Mercurial > dive4elements > river
view flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/sq/SQRelationCalculation.java @ 4255:670e98f5a441
Fixed leak while merging facets.
The ThemeList that is used by OutputHelper to sort the
Facets for an Output now uses a list to store the ManagedFacets.
The correct order is made up by sorting the List using
Collections.sort() function of the Java JDK. Therfore, the
ManagedFacet class implements the Comparable interface. The
return value of its compareTo(other) method depends on the
value of the 'position' field.
author | Ingo Weinzierl <weinzierl.ingo@googlemail.com> |
---|---|
date | Thu, 25 Oct 2012 14:01:46 +0200 |
parents | ba2f0bff0697 |
children | aaf810d4ec82 |
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package de.intevation.flys.artifacts.model.sq; import de.intevation.flys.artifacts.access.SQRelationAccess; import de.intevation.flys.artifacts.math.fitting.Function; import de.intevation.flys.artifacts.math.fitting.FunctionFactory; import de.intevation.flys.artifacts.model.Calculation; import de.intevation.flys.artifacts.model.CalculationResult; import de.intevation.flys.artifacts.model.DateRange; import de.intevation.flys.artifacts.model.Parameters; import de.intevation.flys.backend.SedDBSessionHolder; import java.util.ArrayList; import java.util.List; import org.apache.log4j.Logger; public class SQRelationCalculation extends Calculation { private static final Logger log = Logger.getLogger(SQRelationCalculation.class); public static final String SQ_FUNCTION_NAME = "sq-pow"; protected String river; protected double location; protected DateRange period; protected double outliers; public SQRelationCalculation() { } public SQRelationCalculation(SQRelationAccess access) { String river = access.getRiver(); Double location = access.getLocation(); DateRange period = access.getPeriod(); Double outliers = access.getOutliers(); //river = "Rhein"; if (river == null) { // TODO: i18n addProblem("sq.missing.river"); } if (location == null) { // TODO: i18n addProblem("sq.missing.location"); } if (period == null) { // TODO: i18n addProblem("sq.missing.periods"); } if (outliers == null) { // TODO: i18n addProblem("sq.missing.outliers"); } if (!hasProblems()) { this.river = river; this.location = location; this.period = period; this.outliers = outliers; } } public CalculationResult calculate() { log.debug("SQRelationCalculation.calculate"); if (hasProblems()) { return new CalculationResult(this); } SedDBSessionHolder.acquire(); try { return internalCalculate(); } finally { SedDBSessionHolder.release(); } } protected CalculationResult internalCalculate() { Function function = FunctionFactory .getInstance() .getFunction(SQ_FUNCTION_NAME); if (function == null) { log.error("No '" + SQ_FUNCTION_NAME + "' function found."); // TODO: i18n addProblem("sq.missing.sq.function"); } Measurements measurements = MeasurementFactory.getMeasurements(river, location, period); SQFractionResult [] fractionResults = new SQFractionResult[SQResult.NUMBER_FRACTIONS]; for (int i = 0; i < fractionResults.length; ++i) { List<SQ> sqs = measurements.getSQs(i); SQFractionResult fractionResult; List<SQFractionResult.Iteration> iterations = doFitting(function, sqs); if (iterations == null) { // TODO: i18n addProblem("sq.fitting.failed." + i); fractionResult = new SQFractionResult(); } else { fractionResult = new SQFractionResult( sqs.toArray(new SQ[sqs.size()]), iterations); } fractionResults[i] = fractionResult; } return new CalculationResult( new SQResult[] { new SQResult(location, fractionResults) }, this); } protected List<SQFractionResult.Iteration> doFitting( final Function function, List<SQ> sqs ) { final List<SQFractionResult.Iteration> iterations = new ArrayList<SQFractionResult.Iteration>(); boolean success = new Fitting(function, outliers).fit( sqs, new Fitting.Callback() { @Override public void afterIteration( double [] coeffs, SQ [] measurements, SQ [] outliers, double standardDeviation, double chiSqr ) { Parameters parameters = createParameters( function.getParameterNames(), coeffs, standardDeviation, chiSqr); iterations.add(new SQFractionResult.Iteration( parameters, measurements, outliers)); } }); return success ? iterations : null; } public static final Parameters createParameters( String [] names, double [] values, double standardDeviation, double chiSqr ) { String [] columns = new String[names.length + 2]; columns[0] = "chi_sqr"; columns[1] = "std_dev"; System.arraycopy(names, 0, columns, 2, names.length); Parameters parameters = new Parameters(columns); int row = parameters.newRow(); parameters.set(row, names, values); parameters.set(row, "chi_sqr", chiSqr); parameters.set(row, "std_dev", standardDeviation); return parameters; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :