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Tensorics is a java framework which uses a tensor as a central object. A tensor represents a set of values placed in an N-dimensional space. Wherever you are tempted to use maps of maps, a tensor might be a good choice ;-) Tensorics provides methods to create, transform and performing calculations with those tensors.
// @formatter:off
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*
* This file is part of tensorics.
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* Copyright (c) 2008-2011, CERN. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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package org.tensorics.core.tensor.operations;
import java.util.function.Function;
import org.tensorics.core.math.operations.CreationOperation;
import org.tensorics.core.tensor.ImmutableTensor;
import org.tensorics.core.tensor.ImmutableTensor.Builder;
import org.tensorics.core.tensor.Position;
import org.tensorics.core.tensor.Shape;
import org.tensorics.core.tensor.Tensor;
/**
* Uses the given function from a position to the tensor to create the values of the tensor.
*
* @author kaifox
* @param the type of the elements of the tensor to be created
*/
public class FunctionTensorCreationOperation implements CreationOperation> {
private final Shape shape;
private final Function function;
public FunctionTensorCreationOperation(Shape shape, Function function) {
super();
this.shape = shape;
this.function = function;
}
@Override
public Tensor perform() {
Builder builder = ImmutableTensor.builder(shape.dimensionSet());
for (Position position : shape.positionSet()) {
builder.at(position).put(function.apply(position));
}
return builder.build();
}
}