/*-
* Copyright 2015 Diamond Light Source Ltd.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*/
package uk.ac.diamond.scisoft.analysis.processing.operations.oned;
import org.eclipse.dawnsci.analysis.api.processing.Atomic;
import org.eclipse.dawnsci.analysis.api.processing.OperationData;
import org.eclipse.dawnsci.analysis.api.processing.OperationException;
import org.eclipse.dawnsci.analysis.api.processing.OperationRank;
import org.eclipse.dawnsci.analysis.dataset.operations.AbstractOperation;
import org.eclipse.january.DatasetException;
import org.eclipse.january.IMonitor;
import org.eclipse.january.MetadataException;
import org.eclipse.january.dataset.Dataset;
import org.eclipse.january.dataset.DatasetFactory;
import org.eclipse.january.dataset.DatasetUtils;
import org.eclipse.january.dataset.IDataset;
import org.eclipse.january.dataset.ILazyDataset;
import org.eclipse.january.dataset.Maths;
import org.eclipse.january.metadata.AxesMetadata;
import org.eclipse.january.metadata.MetadataFactory;
@Atomic
public class DerivativeOperation extends AbstractOperation<DerivativeModel, OperationData> {
@Override
public String getId() {
return "uk.ac.diamond.scisoft.analysis.processing.operations.oned.DerivativeOperation";
}
protected OperationData process(IDataset input, IMonitor monitor) throws OperationException {
if (model.getDerivative() < 1) throw new OperationException(this,"Invalid derivative order!");
ILazyDataset[] firstAxes = getFirstAxes(input);
IDataset ax;
if (firstAxes == null || firstAxes[0] == null) {
ax = DatasetFactory.createRange(input.getShape()[0], Dataset.INT64);
} else {
try {
ax = firstAxes[0].getSlice();
} catch (DatasetException e) {
throw new OperationException(this, e);
}
}
Dataset out = DatasetUtils.convertToDataset(input);
Dataset a = DatasetUtils.convertToDataset(ax);
for (int i = 0; i < model.getDerivative(); i++) {
out = Maths.derivative(a, out, model.getSmoothing());
}
AxesMetadata axm;
try {
axm = MetadataFactory.createMetadata(AxesMetadata.class, 1);
} catch (MetadataException e) {
throw new OperationException(this, e);
}
axm.setAxis(0, a);
out.setMetadata(axm);
return new OperationData(out);
}
@Override
public OperationRank getInputRank() {
return OperationRank.ONE;
}
@Override
public OperationRank getOutputRank() {
return OperationRank.ONE;
}
}