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Posted to commits@commons.apache.org by lu...@apache.org on 2008/07/27 21:15:22 UTC
svn commit: r680166 [2/3] - in /commons/proper/math/branches/MATH_2_0: ./
src/java/org/apache/commons/math/linear/ src/site/xdoc/
src/test/org/apache/commons/math/linear/
Added: commons/proper/math/branches/MATH_2_0/src/java/org/apache/commons/math/linear/RealVectorImpl.java
URL: http://svn.apache.org/viewvc/commons/proper/math/branches/MATH_2_0/src/java/org/apache/commons/math/linear/RealVectorImpl.java?rev=680166&view=auto
==============================================================================
--- commons/proper/math/branches/MATH_2_0/src/java/org/apache/commons/math/linear/RealVectorImpl.java (added)
+++ commons/proper/math/branches/MATH_2_0/src/java/org/apache/commons/math/linear/RealVectorImpl.java Sun Jul 27 12:15:22 2008
@@ -0,0 +1,1295 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.commons.math.linear;
+
+import java.io.Serializable;
+import java.util.Arrays;
+
+import org.apache.commons.math.util.MathUtils;
+
+/**
+ * This class implements the {@link RealVector} interface with a double array.
+ * @version $Revision$ $Date$
+ * @since 2.0
+ */
+public class RealVectorImpl implements RealVector, Serializable {
+
+ /** Serializable version identifier. */
+ private static final long serialVersionUID = 7838747548772166404L;
+
+ /** Default format. */
+ private static final RealVectorFormat DEFAULT_FORMAT =
+ RealVectorFormat.getInstance();
+
+ /** Entries of the vector. */
+ protected double data[];
+
+ /**
+ * Build a 0-length vector.
+ * <p>Zero-length vectors may be used to initialized construction of vectors
+ * by data gathering. We start with zero-length and use either the {@link
+ * #RealVectorImpl(RealVectorImpl, RealVectorImpl)} constructor
+ * or one of the <code>append</code> method ({@link #append(double)}, {@link
+ * #append(double[])}, {@link #append(RealVectorImpl)}) to gather data
+ * into this vector.</p>
+ */
+ public RealVectorImpl() {
+ data = new double[0];
+ }
+
+ /**
+ * Construct a (size)-length vector of zeros.
+ * @param size size of the vector
+ */
+ public RealVectorImpl(int size) {
+ data = new double[size];
+ }
+
+ /**
+ * Construct an (size)-length vector with preset values.
+ * @param size size of the vector
+ * @param preset fill the vector with this scalar value
+ */
+ public RealVectorImpl(int size, double preset) {
+ data = new double[size];
+ Arrays.fill(data, preset);
+ }
+
+ /**
+ * Construct a vector from an array, copying the input array.
+ * @param d array of doubles.
+ */
+ public RealVectorImpl(double[] d) {
+ data = d.clone();
+ }
+
+ /**
+ * Create a new RealVectorImpl using the input array as the underlying
+ * data array.
+ * <p>If an array is built specially in order to be embedded in a
+ * RealVectorImpl and not used directly, the <code>copyArray</code> may be
+ * set to <code>false</code. This will prevent the copying and improve
+ * performance as no new array will be built and no data will be copied.</p>
+ * @param d data for new vector
+ * @param copyArray if true, the input array will be copied, otherwise
+ * it will be referenced
+ * @throws IllegalArgumentException if <code>d</code> is empty
+ * @throws NullPointerException if <code>d</code> is null
+ * @see #RealVectorImpl(double[])
+ */
+ public RealVectorImpl(double[] d, boolean copyArray)
+ throws NullPointerException, IllegalArgumentException {
+ if (d == null) {
+ throw new NullPointerException();
+ }
+ if (d.length == 0) {
+ throw new IllegalArgumentException("Vector must have at least one element.");
+ }
+ data = copyArray ? d.clone() : d;
+ }
+
+ /**
+ * Construct a vector from part of a array.
+ * @param d array of doubles.
+ * @param pos position of first entry
+ * @param size number of entries to copy
+ */
+ public RealVectorImpl(double[] d, int pos, int size) {
+ if (d.length < pos + size) {
+ throw new IllegalArgumentException("Position " + pos + " and size " + size +
+ " don't fit to the size of the input array " +
+ d.length);
+ }
+ data = new double[size];
+ System.arraycopy(d, pos, data, 0, size);
+ }
+
+ /**
+ * Construct a vector from an array.
+ * @param d array of Doubles.
+ */
+ public RealVectorImpl(Double[] d) {
+ data = new double[d.length];
+ for (int i = 0; i < d.length; i++) {
+ data[i] = d[i].doubleValue();
+ }
+ }
+
+ /**
+ * Construct a vector from part of a Double array
+ * @param d array of Doubles.
+ * @param pos position of first entry
+ * @param size number of entries to copy
+ */
+ public RealVectorImpl(Double[] d, int pos, int size) {
+ if (d.length < pos + size) {
+ throw new IllegalArgumentException("Position " + pos + " and size " + size +
+ " don't fit to the size of the input array " +
+ d.length);
+ }
+ data = new double[size];
+ for (int i = pos; i < pos + size; i++) {
+ data[i-pos] = d[i].doubleValue();
+ }
+ }
+
+ /**
+ * Construct a vector from another vector, using a deep copy.
+ * @param v vector to copy
+ */
+ public RealVectorImpl(RealVector v) {
+ data = new double[v.getDimension()];
+ for (int i = 0; i < data.length; ++i) {
+ data[i] = v.getEntry(i);
+ }
+ }
+
+ /**
+ * Construct a vector from another vector, using a deep copy.
+ * @param v vector to copy
+ */
+ public RealVectorImpl(RealVectorImpl v) {
+ data = v.data.clone();
+ }
+
+ /**
+ * Construct a vector from another vector.
+ * @param v vector to copy
+ * @param deep if true perform a deep copy otherwise perform a shallow copy
+ */
+ public RealVectorImpl(RealVectorImpl v, boolean deep) {
+ data = deep ? v.data.clone() : v.data;
+ }
+
+ /**
+ * Construct a vector by appending one vector to another vector.
+ * @param v1 first vector (will be put in front of the new vector)
+ * @param v2 second vector (will be put at back of the new vector)
+ */
+ public RealVectorImpl(RealVectorImpl v1, RealVectorImpl v2) {
+ data = new double[v1.data.length + v2.data.length];
+ System.arraycopy(v1.data, 0, data, 0, v1.data.length);
+ System.arraycopy(v2.data, 0, data, v1.data.length, v2.data.length);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector copy() {
+ return new RealVectorImpl(this, true);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector add(RealVector v)
+ throws IllegalArgumentException {
+ try {
+ return add((RealVectorImpl) v);
+ } catch (ClassCastException cce) {
+ checkVectorDimensions(v);
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = data[i] + v.getEntry(i);
+ }
+ return new RealVectorImpl(out);
+ }
+ }
+
+ /**
+ * Compute the sum of this and v.
+ * @param v vector to be added
+ * @return this + v
+ * @throws IllegalArgumentException if v is not the same size as this
+ */
+ public RealVectorImpl add(RealVectorImpl v)
+ throws IllegalArgumentException {
+ checkVectorDimensions(v);
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = data[i] + v.data[i];
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector subtract(RealVector v)
+ throws IllegalArgumentException {
+ try {
+ return subtract((RealVectorImpl) v);
+ } catch (ClassCastException cce) {
+ checkVectorDimensions(v);
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = data[i] - v.getEntry(i);
+ }
+ return new RealVectorImpl(out);
+ }
+ }
+
+ /**
+ * Compute this minus v.
+ * @param v vector to be subtracted
+ * @return this + v
+ * @throws IllegalArgumentException if v is not the same size as this
+ */
+ public RealVectorImpl subtract(RealVectorImpl v)
+ throws IllegalArgumentException {
+ checkVectorDimensions(v);
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = data[i] - v.data[i];
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapAdd(double d) {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = data[i] + d;
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapAddToSelf(double d) {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = data[i] + d;
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapSubtract(double d) {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = data[i] - d;
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapSubtractToSelf(double d) {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = data[i] - d;
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapMultiply(double d) {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = data[i] * d;
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapMultiplyToSelf(double d) {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = data[i] * d;
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapDivide(double d) {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = data[i] / d;
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapDivideToSelf(double d) {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = data[i] / d;
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapPow(double d) {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.pow(data[i], d);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapPowToSelf(double d) {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.pow(data[i], d);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapExp() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.exp(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapExpToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.exp(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapExpm1() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.expm1(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapExpm1ToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.expm1(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapLog() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.log(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapLogToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.log(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapLog10() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.log10(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapLog10ToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.log10(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapLog1p() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.log1p(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapLog1pToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.log1p(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapCosh() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.cosh(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapCoshToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.cosh(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapSinh() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.sinh(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapSinhToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.sinh(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapTanh() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.tanh(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapTanhToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.tanh(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapCos() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.cos(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapCosToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.cos(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapSin() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.sin(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapSinToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.sin(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapTan() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.tan(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapTanToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.tan(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapAcos() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.acos(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapAcosToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.acos(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapAsin() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.asin(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapAsinToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.asin(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapAtan() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.atan(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapAtanToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.atan(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapInv() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = 1.0 / data[i];
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapInvToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = 1.0 / data[i];
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapAbs() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.abs(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapAbsToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.abs(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapSqrt() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.sqrt(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapSqrtToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.sqrt(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapCbrt() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.cbrt(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapCbrtToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.cbrt(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapCeil() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.ceil(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapCeilToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.ceil(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapFloor() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.floor(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapFloorToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.floor(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapRint() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.rint(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapRintToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.rint(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapSignum() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.signum(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapSignumToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.signum(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapUlp() {
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = Math.ulp(data[i]);
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector mapUlpToSelf() {
+ for (int i = 0; i < data.length; i++) {
+ data[i] = Math.ulp(data[i]);
+ }
+ return this;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector ebeMultiply(RealVector v)
+ throws IllegalArgumentException {
+ try {
+ return ebeMultiply((RealVectorImpl) v);
+ } catch (ClassCastException cce) {
+ checkVectorDimensions(v);
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = data[i] * v.getEntry(i);
+ }
+ return new RealVectorImpl(out);
+ }
+ }
+
+ /**
+ * Element-by-element multiplication.
+ * @param v vector by which instance elements must be multiplied
+ * @return a vector containing this[i] * v[i] for all i
+ * @exception IllegalArgumentException if v is not the same size as this
+ */
+ public RealVectorImpl ebeMultiply(RealVectorImpl v)
+ throws IllegalArgumentException {
+ checkVectorDimensions(v);
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = data[i] * v.data[i];
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector ebeDivide(RealVector v)
+ throws IllegalArgumentException {
+ try {
+ return ebeDivide((RealVectorImpl) v);
+ } catch (ClassCastException cce) {
+ checkVectorDimensions(v);
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = data[i] / v.getEntry(i);
+ }
+ return new RealVectorImpl(out);
+ }
+ }
+
+ /**
+ * Element-by-element division.
+ * @param v vector by which instance elements must be divided
+ * @return a vector containing this[i] / v[i] for all i
+ * @throws IllegalArgumentException if v is not the same size as this
+ */
+ public RealVectorImpl ebeDivide(RealVectorImpl v)
+ throws IllegalArgumentException {
+ checkVectorDimensions(v);
+ double[] out = new double[data.length];
+ for (int i = 0; i < data.length; i++) {
+ out[i] = data[i] / v.data[i];
+ }
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public double[] getData() {
+ return data.clone();
+ }
+
+ /**
+ * Returns a reference to the underlying data array.
+ * <p>Does not make a fresh copy of the underlying data.</p>
+ * @return array of entries
+ */
+ public double[] getDataRef() {
+ return data;
+ }
+
+ /** {@inheritDoc} */
+ public double dotProduct(RealVector v)
+ throws IllegalArgumentException {
+ try {
+ return dotProduct((RealVectorImpl) v);
+ } catch (ClassCastException cce) {
+ checkVectorDimensions(v);
+ double dot = 0;
+ for (int i = 0; i < data.length; i++) {
+ dot += data[i] * v.getEntry(i);
+ }
+ return dot;
+ }
+ }
+
+ /**
+ * Compute the dot product.
+ * @param v vector with which dot product should be computed
+ * @return the scalar dot product between instance and v
+ * @exception IllegalArgumentException if v is not the same size as this
+ */
+ public double dotProduct(RealVectorImpl v)
+ throws IllegalArgumentException {
+ checkVectorDimensions(v);
+ double dot = 0;
+ for (int i = 0; i < data.length; i++) {
+ dot += data[i] * v.getEntry(i);
+ }
+ return dot;
+ }
+
+ /** {@inheritDoc} */
+ public double getNorm() {
+ double sum = 0;
+ for (double a : data) {
+ sum += a * a;
+ }
+ return Math.sqrt(sum);
+ }
+
+ /** {@inheritDoc} */
+ public double getL1Norm() {
+ double sum = 0;
+ for (double a : data) {
+ sum += Math.abs(a);
+ }
+ return sum;
+ }
+
+ /** {@inheritDoc} */
+ public double getLInfNorm() {
+ double max = 0;
+ for (double a : data) {
+ max += Math.max(max, Math.abs(a));
+ }
+ return max;
+ }
+
+ /** {@inheritDoc} */
+ public double getDistance(RealVector v)
+ throws IllegalArgumentException {
+ try {
+ return getDistance((RealVectorImpl) v);
+ } catch (ClassCastException cce) {
+ checkVectorDimensions(v);
+ double sum = 0;
+ for (int i = 0; i < data.length; ++i) {
+ final double delta = data[i] - v.getEntry(i);
+ sum += delta * delta;
+ }
+ return Math.sqrt(sum);
+ }
+ }
+
+ /**
+ * Distance between two vectors.
+ * <p>This method computes the distance consistent with the
+ * L<sub>2</sub> norm, i.e. the square root of the sum of
+ * elements differences, or euclidian distance.</p>
+ * @param v vector to which distance is requested
+ * @return distance between two vectors.
+ * @exception IllegalArgumentException if v is not the same size as this
+ * @see #getDistance(RealVector)
+ * @see #getL1Distance(RealVectorImpl)
+ * @see #getLInfDistance(RealVectorImpl)
+ * @see #getNorm()
+ */
+ public double getDistance(RealVectorImpl v)
+ throws IllegalArgumentException {
+ checkVectorDimensions(v);
+ double sum = 0;
+ for (int i = 0; i < data.length; ++i) {
+ final double delta = data[i] - v.data[i];
+ sum += delta * delta;
+ }
+ return Math.sqrt(sum);
+ }
+
+ /** {@inheritDoc} */
+ public double getL1Distance(RealVector v)
+ throws IllegalArgumentException {
+ try {
+ return getL1Distance((RealVectorImpl) v);
+ } catch (ClassCastException cce) {
+ checkVectorDimensions(v);
+ double sum = 0;
+ for (int i = 0; i < data.length; ++i) {
+ final double delta = data[i] - v.getEntry(i);
+ sum += Math.abs(delta);
+ }
+ return sum;
+ }
+ }
+
+ /**
+ * Distance between two vectors.
+ * <p>This method computes the distance consistent with
+ * L<sub>1</sub> norm, i.e. the sum of the absolute values of
+ * elements differences.</p>
+ * @param v vector to which distance is requested
+ * @return distance between two vectors.
+ * @exception IllegalArgumentException if v is not the same size as this
+ * @see #getDistance(RealVector)
+ * @see #getL1Distance(RealVectorImpl)
+ * @see #getLInfDistance(RealVectorImpl)
+ * @see #getNorm()
+ */
+ public double getL1Distance(RealVectorImpl v)
+ throws IllegalArgumentException {
+ checkVectorDimensions(v);
+ double sum = 0;
+ for (int i = 0; i < data.length; ++i) {
+ final double delta = data[i] - v.data[i];
+ sum += Math.abs(delta);
+ }
+ return sum;
+ }
+
+ /** {@inheritDoc} */
+ public double getLInfDistance(RealVector v)
+ throws IllegalArgumentException {
+ try {
+ return getLInfDistance((RealVectorImpl) v);
+ } catch (ClassCastException cce) {
+ checkVectorDimensions(v);
+ double max = 0;
+ for (int i = 0; i < data.length; ++i) {
+ final double delta = data[i] - v.getEntry(i);
+ max = Math.max(max, Math.abs(delta));
+ }
+ return max;
+ }
+ }
+
+ /**
+ * Distance between two vectors.
+ * <p>This method computes the distance consistent with
+ * L<sub>&infty;</sub> norm, i.e. the max of the absolute values of
+ * elements differences.</p>
+ * @param v vector to which distance is requested
+ * @return distance between two vectors.
+ * @exception IllegalArgumentException if v is not the same size as this
+ * @see #getDistance(RealVector)
+ * @see #getL1Distance(RealVectorImpl)
+ * @see #getLInfDistance(RealVectorImpl)
+ * @see #getNorm()
+ */
+ public double getLInfDistance(RealVectorImpl v)
+ throws IllegalArgumentException {
+ checkVectorDimensions(v);
+ double max = 0;
+ for (int i = 0; i < data.length; ++i) {
+ final double delta = data[i] - v.data[i];
+ max = Math.max(max, Math.abs(delta));
+ }
+ return max;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector unitVector() throws ArithmeticException {
+ final double norm = getNorm();
+ if (norm == 0) {
+ throw new ArithmeticException("null norm");
+ }
+ return mapDivide(getNorm());
+ }
+
+ /** {@inheritDoc} */
+ public void unitize() throws ArithmeticException {
+ final double norm = getNorm();
+ if (norm == 0) {
+ throw new ArithmeticException("null norm");
+ }
+ for (int i = 0; i < data.length; i++) {
+ data[i] /= norm;
+ }
+ }
+
+ /** {@inheritDoc} */
+ public RealVector projection(RealVector v) {
+ return v.mapMultiply(dotProduct(v) / v.dotProduct(v));
+ }
+
+ /** Find the orthogonal projection of this vector onto another vector.
+ * @param v vector onto which instance must be projected
+ * @return projection of the instance onto v
+ * @throws IllegalArgumentException if v is not the same size as this
+ */
+ public RealVectorImpl projection(RealVectorImpl v) {
+ return (RealVectorImpl) v.mapMultiply(dotProduct(v) / v.dotProduct(v));
+ }
+
+ /** {@inheritDoc} */
+ public RealMatrix outerProduct(RealVector v)
+ throws IllegalArgumentException {
+ try {
+ return outerProduct((RealVectorImpl) v);
+ } catch (ClassCastException cce) {
+ checkVectorDimensions(v);
+ double[][] out = new double[data.length][data.length];
+ for (int i = 0; i < data.length; i++) {
+ for (int j = 0; j < data.length; j++) {
+ out[i][j] = data[i] * v.getEntry(j);
+ }
+ }
+ return new RealMatrixImpl(out);
+ }
+ }
+
+ /**
+ * Compute the outer product.
+ * @param v vector with which outer product should be computed
+ * @return the square matrix outer product between instance and v
+ * @exception IllegalArgumentException if v is not the same size as this
+ */
+ public RealMatrixImpl outerProduct(RealVectorImpl v)
+ throws IllegalArgumentException {
+ checkVectorDimensions(v);
+ double[][] out = new double[data.length][data.length];
+ for (int i = 0; i < data.length; i++) {
+ for (int j = 0; j < data.length; j++) {
+ out[i][j] = data[i] * v.data[j];
+ }
+ }
+ return new RealMatrixImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public double getEntry(int index) throws MatrixIndexException {
+ return data[index];
+ }
+
+ /** {@inheritDoc} */
+ public int getDimension() {
+ return data.length;
+ }
+
+ /** {@inheritDoc} */
+ public RealVector append(RealVector v) {
+ try {
+ return append((RealVectorImpl) v);
+ } catch (ClassCastException cce) {
+ return new RealVectorImpl(this,new RealVectorImpl(v));
+ }
+ }
+
+ /**
+ * Construct a vector by appending a vector to this vector.
+ * @param v vector to append to this one.
+ * @return a new vector
+ */
+ public RealVectorImpl append(RealVectorImpl v) {
+ return new RealVectorImpl(this, v);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector append(double in) {
+ final double[] out = new double[data.length + 1];
+ System.arraycopy(data, 0, out, 0, data.length);
+ out[data.length] = in;
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector append(double[] in) {
+ final double[] out = new double[data.length + in.length];
+ System.arraycopy(data, 0, out, 0, data.length);
+ System.arraycopy(in, 0, out, data.length, in.length);
+ return new RealVectorImpl(out);
+ }
+
+ /** {@inheritDoc} */
+ public RealVector get(int index, int n) {
+ try {
+ RealVectorImpl out = new RealVectorImpl(n);
+ System.arraycopy(data, index, out.data, 0, n);
+
+ return out;
+ } catch (IndexOutOfBoundsException e) {
+ throw new MatrixIndexException(e.getMessage());
+ }
+ }
+
+ /** {@inheritDoc} */
+ public void set(int index, double value) {
+ try {
+ data[index] = value;
+ } catch (IndexOutOfBoundsException e) {
+ throw new MatrixIndexException(e.getMessage());
+ }
+ }
+
+ /** {@inheritDoc} */
+ public void set(int index, RealVector v) {
+ try {
+ try {
+ set(index, (RealVectorImpl) v);
+ } catch (ClassCastException cce) {
+ for (int i = index; i < index + v.getDimension(); ++i) {
+ data[i] = v.getEntry(i-index);
+ }
+ }
+ } catch (IndexOutOfBoundsException e) {
+ throw new MatrixIndexException(e.getMessage());
+ }
+ }
+
+ /**
+ * Set a set of consecutive elements.
+ *
+ * @param index index of first element to be set.
+ * @param v vector containing the values to set.
+ * @exception MatrixIndexException if the index is
+ * inconsistent with vector size
+ */
+ public void set(int index, RealVectorImpl v)
+ throws MatrixIndexException {
+ try {
+ System.arraycopy(v.data, 0, data, index, v.data.length);
+ } catch (IndexOutOfBoundsException e) {
+ throw new MatrixIndexException(e.getMessage());
+ }
+ }
+
+ /** {@inheritDoc} */
+ public void set(double value) {
+ Arrays.fill(data, value);
+ }
+
+ /** {@inheritDoc} */
+ public double[] toArray(){
+ return data.clone();
+ }
+
+ /** {@inheritDoc} */
+ public String toString(){
+ return DEFAULT_FORMAT.format(this);
+ }
+
+ /**
+ * Check if instance and specified vectors have the same dimension.
+ * @param v vector to compare instance with
+ * @exception IllegalArgumentException if the vectors do not
+ * have the same dimension
+ */
+ public void checkVectorDimensions(RealVector v)
+ throws IllegalArgumentException {
+ checkVectorDimensions(v.getDimension());
+ }
+
+ /**
+ * Check if instance dimension is equal to some expected value.
+ *
+ * @param n expected dimension.
+ * @exception IllegalArgumentException if the dimension is
+ * inconsistent with vector size
+ */
+ public void checkVectorDimensions(int n)
+ throws IllegalArgumentException {
+ if (data.length != n) {
+ throw new IllegalArgumentException("vector dimension is " + data.length +
+ ", not " + n + " as expected");
+ }
+ }
+
+ /**
+ * Returns true if any coordinate of this vector is NaN; false otherwise
+ * @return true if any coordinate of this vector is NaN; false otherwise
+ */
+ public boolean isNaN() {
+ for (double v : data) {
+ if (Double.isNaN(v)) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ /**
+ * Returns true if any coordinate of this vector is infinite and none are NaN;
+ * false otherwise
+ * @return true if any coordinate of this vector is infinite and none are NaN;
+ * false otherwise
+ */
+ public boolean isInfinite() {
+
+ if (isNaN()) {
+ return false;
+ }
+
+ for (double v : data) {
+ if (Double.isInfinite(v)) {
+ return true;
+ }
+ }
+
+ return false;
+
+ }
+
+ /**
+ * Test for the equality of two real vectors.
+ * <p>
+ * If all coordinates of two real vectors are exactly the same, and none are
+ * <code>Double.NaN</code>, the two real vectors are considered to be equal.
+ * </p>
+ * <p>
+ * <code>NaN</code> coordinates are considered to affect globally the vector
+ * and be equals to each other - i.e, if either (or all) coordinates of the
+ * real vector are equal to <code>Double.NaN</code>, the real vector is equal to
+ * a vector with all <code>Double.NaN</code> coordinates.
+ * </p>
+ *
+ * @param other Object to test for equality to this
+ * @return true if two 3D vector objects are equal, false if
+ * object is null, not an instance of Vector3D, or
+ * not equal to this Vector3D instance
+ *
+ */
+ public boolean equals(Object other) {
+
+ if (this == other) {
+ return true;
+ }
+
+ if (other == null) {
+ return false;
+ }
+
+ try {
+
+ RealVector rhs = (RealVector) other;
+ if (data.length != rhs.getDimension()) {
+ return false;
+ }
+
+ if (rhs.isNaN()) {
+ return this.isNaN();
+ }
+
+ for (int i = 0; i < data.length; ++i) {
+ if (Double.doubleToRawLongBits(data[i]) !=
+ Double.doubleToRawLongBits(rhs.getEntry(i))) {
+ return false;
+ }
+ }
+ return true;
+
+ } catch (ClassCastException ex) {
+ // ignore exception
+ return false;
+ }
+
+ }
+
+ /**
+ * Get a hashCode for the real vector.
+ * <p>All NaN values have the same hash code.</p>
+ * @return a hash code value for this object
+ */
+ public int hashCode() {
+ if (isNaN()) {
+ return 9;
+ }
+ return MathUtils.hash(data);
+ }
+
+}
Propchange: commons/proper/math/branches/MATH_2_0/src/java/org/apache/commons/math/linear/RealVectorImpl.java
------------------------------------------------------------------------------
svn:eol-style = native
Propchange: commons/proper/math/branches/MATH_2_0/src/java/org/apache/commons/math/linear/RealVectorImpl.java
------------------------------------------------------------------------------
svn:keywords = Author Date Id Revision
Modified: commons/proper/math/branches/MATH_2_0/src/site/xdoc/changes.xml
URL: http://svn.apache.org/viewvc/commons/proper/math/branches/MATH_2_0/src/site/xdoc/changes.xml?rev=680166&r1=680165&r2=680166&view=diff
==============================================================================
--- commons/proper/math/branches/MATH_2_0/src/site/xdoc/changes.xml (original)
+++ commons/proper/math/branches/MATH_2_0/src/site/xdoc/changes.xml Sun Jul 27 12:15:22 2008
@@ -39,6 +39,12 @@
</properties>
<body>
<release version="2.0" date="TBD" description="TBD">
+ <action dev="luc" type="add" due-to="Andreas Rieger">
+ Support for one dimensional vectors has been added to the linear algebra
+ package with a RealVector interface, a RealVectorImpl default implementation
+ using a single double array to store elements and a RealVectorFormat for
+ input/output.
+ </action>
<action dev="psteitz" type="update" issue="MATH-217">
Changed OLS regression implementation added in MATH-203 to use
QR decomposition to solve the normal equations.
Added: commons/proper/math/branches/MATH_2_0/src/test/org/apache/commons/math/linear/FrenchRealVectorFormatTest.java
URL: http://svn.apache.org/viewvc/commons/proper/math/branches/MATH_2_0/src/test/org/apache/commons/math/linear/FrenchRealVectorFormatTest.java?rev=680166&view=auto
==============================================================================
--- commons/proper/math/branches/MATH_2_0/src/test/org/apache/commons/math/linear/FrenchRealVectorFormatTest.java (added)
+++ commons/proper/math/branches/MATH_2_0/src/test/org/apache/commons/math/linear/FrenchRealVectorFormatTest.java Sun Jul 27 12:15:22 2008
@@ -0,0 +1,32 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.commons.math.linear;
+
+import java.util.Locale;
+
+
+public class FrenchRealVectorFormatTest extends RealVectorFormatAbstractTest {
+
+ protected char getDecimalCharacter() {
+ return ',';
+ }
+
+ protected Locale getLocale() {
+ return Locale.FRENCH;
+ }
+}
Propchange: commons/proper/math/branches/MATH_2_0/src/test/org/apache/commons/math/linear/FrenchRealVectorFormatTest.java
------------------------------------------------------------------------------
svn:eol-style = native
Propchange: commons/proper/math/branches/MATH_2_0/src/test/org/apache/commons/math/linear/FrenchRealVectorFormatTest.java
------------------------------------------------------------------------------
svn:keywords = Author Date Id Revision
Modified: commons/proper/math/branches/MATH_2_0/src/test/org/apache/commons/math/linear/RealMatrixImplTest.java
URL: http://svn.apache.org/viewvc/commons/proper/math/branches/MATH_2_0/src/test/org/apache/commons/math/linear/RealMatrixImplTest.java?rev=680166&r1=680165&r2=680166&view=diff
==============================================================================
--- commons/proper/math/branches/MATH_2_0/src/test/org/apache/commons/math/linear/RealMatrixImplTest.java (original)
+++ commons/proper/math/branches/MATH_2_0/src/test/org/apache/commons/math/linear/RealMatrixImplTest.java Sun Jul 27 12:15:22 2008
@@ -253,8 +253,10 @@
RealMatrixImpl m = new RealMatrixImpl(testData);
RealMatrix mInv = new RealMatrixImpl(testDataInv);
// being a bit slothful here -- actually testing that X = A^-1 * B
- assertClose("inverse-operate",mInv.operate(testVector),
- m.solve(testVector),normTolerance);
+ assertClose("inverse-operate", mInv.operate(testVector),
+ m.solve(testVector), normTolerance);
+ assertClose("inverse-operate", mInv.operate(testVector),
+ m.solve(new RealVectorImpl(testVector)).getData(), normTolerance);
try {
m.solve(testVector2);
fail("expecting IllegalArgumentException");
@@ -332,8 +334,10 @@
/** test operate */
public void testOperate() {
RealMatrix m = new RealMatrixImpl(id);
- double[] x = m.operate(testVector);
- assertClose("identity operate",testVector,x,entryTolerance);
+ assertClose("identity operate", testVector,
+ m.operate(testVector), entryTolerance);
+ assertClose("identity operate", testVector,
+ m.operate(new RealVectorImpl(testVector)).getData(), entryTolerance);
m = new RealMatrixImpl(bigSingular);
try {
m.operate(testVector);
@@ -368,7 +372,10 @@
/** test preMultiply by vector */
public void testPremultiplyVector() {
RealMatrix m = new RealMatrixImpl(testData);
- assertClose("premultiply",m.preMultiply(testVector),preMultTest,normTolerance);
+ assertClose("premultiply", m.preMultiply(testVector),
+ preMultTest, normTolerance);
+ assertClose("premultiply", m.preMultiply(new RealVectorImpl(testVector).getData()),
+ preMultTest, normTolerance);
m = new RealMatrixImpl(bigSingular);
try {
m.preMultiply(testVector);
@@ -607,6 +614,54 @@
// expected
}
}
+
+ public void testGetRowVector() {
+ RealMatrix m = new RealMatrixImpl(subTestData);
+ RealVector mRow0 = new RealVectorImpl(subRow0[0]);
+ RealVector mRow3 = new RealVectorImpl(subRow3[0]);
+ assertEquals("Row0", mRow0, m.getRowVector(0));
+ assertEquals("Row3", mRow3, m.getRowVector(3));
+ try {
+ m.getRowVector(-1);
+ fail("Expecting MatrixIndexException");
+ } catch (MatrixIndexException ex) {
+ // expected
+ }
+ try {
+ m.getRowVector(4);
+ fail("Expecting MatrixIndexException");
+ } catch (MatrixIndexException ex) {
+ // expected
+ }
+ }
+
+ public void testGetColumnVector() {
+ RealMatrix m = new RealMatrixImpl(subTestData);
+ RealVector mColumn1 = columnToVector(subColumn1);
+ RealVector mColumn3 = columnToVector(subColumn3);
+ assertEquals("Column1", mColumn1, m.getColumnVector(1));
+ assertEquals("Column3", mColumn3, m.getColumnVector(3));
+ try {
+ m.getColumnVector(-1);
+ fail("Expecting MatrixIndexException");
+ } catch (MatrixIndexException ex) {
+ // expected
+ }
+ try {
+ m.getColumnVector(4);
+ fail("Expecting MatrixIndexException");
+ } catch (MatrixIndexException ex) {
+ // expected
+ }
+ }
+
+ private RealVector columnToVector(double[][] column) {
+ double[] data = new double[column.length];
+ for (int i = 0; i < data.length; ++i) {
+ data[i] = column[i][0];
+ }
+ return new RealVectorImpl(data, false);
+ }
public void testEqualsAndHashCode() {
RealMatrixImpl m = new RealMatrixImpl(testData);
Added: commons/proper/math/branches/MATH_2_0/src/test/org/apache/commons/math/linear/RealVectorFormatAbstractTest.java
URL: http://svn.apache.org/viewvc/commons/proper/math/branches/MATH_2_0/src/test/org/apache/commons/math/linear/RealVectorFormatAbstractTest.java?rev=680166&view=auto
==============================================================================
--- commons/proper/math/branches/MATH_2_0/src/test/org/apache/commons/math/linear/RealVectorFormatAbstractTest.java (added)
+++ commons/proper/math/branches/MATH_2_0/src/test/org/apache/commons/math/linear/RealVectorFormatAbstractTest.java Sun Jul 27 12:15:22 2008
@@ -0,0 +1,384 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.commons.math.linear;
+
+import java.text.NumberFormat;
+import java.text.ParseException;
+import java.text.ParsePosition;
+import java.util.Locale;
+
+import junit.framework.TestCase;
+
+import org.apache.commons.math.util.CompositeFormat;
+
+public abstract class RealVectorFormatAbstractTest extends TestCase {
+
+ RealVectorFormat realVectorFormat = null;
+ RealVectorFormat realVectorFormatSquare = null;
+
+ protected abstract Locale getLocale();
+
+ protected abstract char getDecimalCharacter();
+
+ protected void setUp() throws Exception {
+ realVectorFormat = RealVectorFormat.getInstance(getLocale());
+ final NumberFormat nf = NumberFormat.getInstance(getLocale());
+ nf.setMaximumFractionDigits(2);
+ realVectorFormatSquare = new RealVectorFormat("[", "]", " : ", nf);
+ }
+
+ public void testSimpleNoDecimals() {
+ RealVectorImpl c = new RealVectorImpl(new double[] {1, 1, 1});
+ String expected = "{1; 1; 1}";
+ String actual = realVectorFormat.format(c);
+ assertEquals(expected, actual);
+ }
+
+ public void testSimpleWithDecimals() {
+ RealVectorImpl c = new RealVectorImpl(new double[] {1.23, 1.43, 1.63});
+ String expected =
+ "{1" + getDecimalCharacter() +
+ "23; 1" + getDecimalCharacter() +
+ "43; 1" + getDecimalCharacter() +
+ "63}";
+ String actual = realVectorFormat.format(c);
+ assertEquals(expected, actual);
+ }
+
+ public void testSimpleWithDecimalsTrunc() {
+ RealVectorImpl c = new RealVectorImpl(new double[] {1.2323, 1.4343, 1.6333});
+ String expected =
+ "{1" + getDecimalCharacter() +
+ "23; 1" + getDecimalCharacter() +
+ "43; 1" + getDecimalCharacter() +
+ "63}";
+ String actual = realVectorFormat.format(c);
+ assertEquals(expected, actual);
+ }
+
+ public void testNegativeX() {
+ RealVectorImpl c = new RealVectorImpl(new double[] {-1.2323, 1.4343, 1.6333});
+ String expected =
+ "{-1" + getDecimalCharacter() +
+ "23; 1" + getDecimalCharacter() +
+ "43; 1" + getDecimalCharacter() +
+ "63}";
+ String actual = realVectorFormat.format(c);
+ assertEquals(expected, actual);
+ }
+
+ public void testNegativeY() {
+ RealVectorImpl c = new RealVectorImpl(new double[] {1.2323, -1.4343, 1.6333});
+ String expected =
+ "{1" + getDecimalCharacter() +
+ "23; -1" + getDecimalCharacter() +
+ "43; 1" + getDecimalCharacter() +
+ "63}";
+ String actual = realVectorFormat.format(c);
+ assertEquals(expected, actual);
+ }
+
+ public void testNegativeZ() {
+ RealVectorImpl c = new RealVectorImpl(new double[] {1.2323, 1.4343, -1.6333});
+ String expected =
+ "{1" + getDecimalCharacter() +
+ "23; 1" + getDecimalCharacter() +
+ "43; -1" + getDecimalCharacter() +
+ "63}";
+ String actual = realVectorFormat.format(c);
+ assertEquals(expected, actual);
+ }
+
+ public void testNonDefaultSetting() {
+ RealVectorImpl c = new RealVectorImpl(new double[] {1, 1, 1});
+ String expected = "[1 : 1 : 1]";
+ String actual = realVectorFormatSquare.format(c);
+ assertEquals(expected, actual);
+ }
+
+ public void testStaticFormatRealVectorImpl() {
+ Locale defaultLocal = Locale.getDefault();
+ Locale.setDefault(getLocale());
+
+ RealVectorImpl c = new RealVectorImpl(new double[] {232.222, -342.33, 432.444});
+ String expected =
+ "{232" + getDecimalCharacter() +
+ "22; -342" + getDecimalCharacter() +
+ "33; 432" + getDecimalCharacter() +
+ "44}";
+ String actual = RealVectorFormat.formatRealVector(c);
+ assertEquals(expected, actual);
+
+ Locale.setDefault(defaultLocal);
+ }
+
+ public void testNan() {
+ RealVectorImpl c = new RealVectorImpl(new double[] {Double.NaN, Double.NaN, Double.NaN});
+ String expected = "{(NaN); (NaN); (NaN)}";
+ String actual = realVectorFormat.format(c);
+ assertEquals(expected, actual);
+ }
+
+ public void testPositiveInfinity() {
+ RealVectorImpl c = new RealVectorImpl(new double[] {
+ Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY
+ });
+ String expected = "{(Infinity); (Infinity); (Infinity)}";
+ String actual = realVectorFormat.format(c);
+ assertEquals(expected, actual);
+ }
+
+ public void tesNegativeInfinity() {
+ RealVectorImpl c = new RealVectorImpl(new double[] {
+ Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY
+ });
+ String expected = "{(-Infinity); (-Infinity); (-Infinity)}";
+ String actual = realVectorFormat.format(c);
+ assertEquals(expected, actual);
+ }
+
+ public void testParseSimpleNoDecimals() {
+ String source = "{1; 1; 1}";
+ RealVectorImpl expected = new RealVectorImpl(new double[] {1, 1, 1});
+ try {
+ RealVectorImpl actual = (RealVectorImpl) realVectorFormat.parseObject(source);
+ assertEquals(expected, actual);
+ } catch (ParseException ex) {
+ fail(ex.getMessage());
+ }
+ }
+
+ public void testParseIgnoredWhitespace() {
+ RealVectorImpl expected = new RealVectorImpl(new double[] {1, 1, 1});
+ ParsePosition pos1 = new ParsePosition(0);
+ String source1 = "{1;1;1}";
+ assertEquals(expected, realVectorFormat.parseObject(source1, pos1));
+ assertEquals(source1.length(), pos1.getIndex());
+ ParsePosition pos2 = new ParsePosition(0);
+ String source2 = " { 1 ; 1 ; 1 } ";
+ assertEquals(expected, realVectorFormat.parseObject(source2, pos2));
+ assertEquals(source2.length() - 1, pos2.getIndex());
+ }
+
+ public void testParseSimpleWithDecimals() {
+ String source =
+ "{1" + getDecimalCharacter() +
+ "23; 1" + getDecimalCharacter() +
+ "43; 1" + getDecimalCharacter() +
+ "63}";
+ RealVectorImpl expected = new RealVectorImpl(new double[] {1.23, 1.43, 1.63});
+ try {
+ RealVectorImpl actual = (RealVectorImpl) realVectorFormat.parseObject(source);
+ assertEquals(expected, actual);
+ } catch (ParseException ex) {
+ fail(ex.getMessage());
+ }
+ }
+
+ public void testParseSimpleWithDecimalsTrunc() {
+ String source =
+ "{1" + getDecimalCharacter() +
+ "2323; 1" + getDecimalCharacter() +
+ "4343; 1" + getDecimalCharacter() +
+ "6333}";
+ RealVectorImpl expected = new RealVectorImpl(new double[] {1.2323, 1.4343, 1.6333});
+ try {
+ RealVectorImpl actual = (RealVectorImpl) realVectorFormat.parseObject(source);
+ assertEquals(expected, actual);
+ } catch (ParseException ex) {
+ fail(ex.getMessage());
+ }
+ }
+
+ public void testParseNegativeX() {
+ String source =
+ "{-1" + getDecimalCharacter() +
+ "2323; 1" + getDecimalCharacter() +
+ "4343; 1" + getDecimalCharacter() +
+ "6333}";
+ RealVectorImpl expected = new RealVectorImpl(new double[] {-1.2323, 1.4343, 1.6333});
+ try {
+ RealVectorImpl actual = (RealVectorImpl) realVectorFormat.parseObject(source);
+ assertEquals(expected, actual);
+ } catch (ParseException ex) {
+ fail(ex.getMessage());
+ }
+ }
+
+ public void testParseNegativeY() {
+ String source =
+ "{1" + getDecimalCharacter() +
+ "2323; -1" + getDecimalCharacter() +
+ "4343; 1" + getDecimalCharacter() +
+ "6333}";
+ RealVectorImpl expected = new RealVectorImpl(new double[] {1.2323, -1.4343, 1.6333});
+ try {
+ RealVectorImpl actual = (RealVectorImpl) realVectorFormat.parseObject(source);
+ assertEquals(expected, actual);
+ } catch (ParseException ex) {
+ fail(ex.getMessage());
+ }
+ }
+
+ public void testParseNegativeZ() {
+ String source =
+ "{1" + getDecimalCharacter() +
+ "2323; 1" + getDecimalCharacter() +
+ "4343; -1" + getDecimalCharacter() +
+ "6333}";
+ RealVectorImpl expected = new RealVectorImpl(new double[] {1.2323, 1.4343, -1.6333});
+ try {
+ RealVectorImpl actual = (RealVectorImpl) realVectorFormat.parseObject(source);
+ assertEquals(expected, actual);
+ } catch (ParseException ex) {
+ fail(ex.getMessage());
+ }
+ }
+
+ public void testParseNegativeAll() {
+ String source =
+ "{-1" + getDecimalCharacter() +
+ "2323; -1" + getDecimalCharacter() +
+ "4343; -1" + getDecimalCharacter() +
+ "6333}";
+ RealVectorImpl expected = new RealVectorImpl(new double[] {-1.2323, -1.4343, -1.6333});
+ try {
+ RealVectorImpl actual = (RealVectorImpl) realVectorFormat.parseObject(source);
+ assertEquals(expected, actual);
+ } catch (ParseException ex) {
+ fail(ex.getMessage());
+ }
+ }
+
+ public void testParseZeroX() {
+ String source =
+ "{0" + getDecimalCharacter() +
+ "0; -1" + getDecimalCharacter() +
+ "4343; 1" + getDecimalCharacter() +
+ "6333}";
+ RealVectorImpl expected = new RealVectorImpl(new double[] {0.0, -1.4343, 1.6333});
+ try {
+ RealVectorImpl actual = (RealVectorImpl) realVectorFormat.parseObject(source);
+ assertEquals(expected, actual);
+ } catch (ParseException ex) {
+ fail(ex.getMessage());
+ }
+ }
+
+ public void testParseNonDefaultSetting() {
+ String source =
+ "[1" + getDecimalCharacter() +
+ "2323 : 1" + getDecimalCharacter() +
+ "4343 : 1" + getDecimalCharacter() +
+ "6333]";
+ RealVectorImpl expected = new RealVectorImpl(new double[] {1.2323, 1.4343, 1.6333});
+ try {
+ RealVectorImpl actual = (RealVectorImpl) realVectorFormatSquare.parseObject(source);
+ assertEquals(expected, actual);
+ } catch (ParseException ex) {
+ fail(ex.getMessage());
+ }
+ }
+
+ public void testParseNan() {
+ String source = "{(NaN); (NaN); (NaN)}";
+ try {
+ RealVectorImpl actual = (RealVectorImpl) realVectorFormat.parseObject(source);
+ assertEquals(new RealVectorImpl(new double[] {Double.NaN, Double.NaN, Double.NaN}), actual);
+ } catch (ParseException ex) {
+ fail(ex.getMessage());
+ }
+ }
+
+ public void testParsePositiveInfinity() {
+ String source = "{(Infinity); (Infinity); (Infinity)}";
+ try {
+ RealVectorImpl actual = (RealVectorImpl)realVectorFormat.parseObject(source);
+ assertEquals(new RealVectorImpl(new double[] {
+ Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY
+ }), actual);
+ } catch (ParseException ex) {
+ fail(ex.getMessage());
+ }
+ }
+
+ public void testParseNegativeInfinity() {
+ String source = "{(-Infinity); (-Infinity); (-Infinity)}";
+ try {
+ RealVectorImpl actual = (RealVectorImpl)realVectorFormat.parseObject(source);
+ assertEquals(new RealVectorImpl(new double[] {
+ Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY
+ }), actual);
+ } catch (ParseException ex) {
+ fail(ex.getMessage());
+ }
+ }
+
+ public void testParseNoComponents() {
+ try {
+ realVectorFormat.parseObject("{ }");
+ } catch (ParseException pe) {
+ // expected behavior
+ } catch (Exception e) {
+ fail("wrong exception caught");
+ }
+ }
+
+ public void testParseManyComponents() throws ParseException {
+ RealVectorImpl parsed =
+ (RealVectorImpl) realVectorFormat.parseObject("{0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0;0}");
+ assertEquals(24, parsed.getDimension());
+ }
+
+ public void testConstructorSingleFormat() {
+ NumberFormat nf = NumberFormat.getInstance();
+ RealVectorFormat cf = new RealVectorFormat(nf);
+ assertNotNull(cf);
+ assertEquals(nf, cf.getFormat());
+ }
+
+ public void testFormatObject() {
+ try {
+ CompositeFormat cf = new RealVectorFormat();
+ Object object = new Object();
+ cf.format(object);
+ fail();
+ } catch (IllegalArgumentException ex) {
+ // success
+ }
+ }
+
+ public void testForgottenPrefix() {
+ ParsePosition pos = new ParsePosition(0);
+ assertNull(new RealVectorFormat().parse("1; 1; 1}", pos));
+ assertEquals(0, pos.getErrorIndex());
+ }
+
+ public void testForgottenSeparator() {
+ ParsePosition pos = new ParsePosition(0);
+ assertNull(new RealVectorFormat().parse("{1; 1 1}", pos));
+ assertEquals(6, pos.getErrorIndex());
+ }
+
+ public void testForgottenSuffix() {
+ ParsePosition pos = new ParsePosition(0);
+ assertNull(new RealVectorFormat().parse("{1; 1; 1 ", pos));
+ assertEquals(8, pos.getErrorIndex());
+ }
+
+}
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Added: commons/proper/math/branches/MATH_2_0/src/test/org/apache/commons/math/linear/RealVectorFormatTest.java
URL: http://svn.apache.org/viewvc/commons/proper/math/branches/MATH_2_0/src/test/org/apache/commons/math/linear/RealVectorFormatTest.java?rev=680166&view=auto
==============================================================================
--- commons/proper/math/branches/MATH_2_0/src/test/org/apache/commons/math/linear/RealVectorFormatTest.java (added)
+++ commons/proper/math/branches/MATH_2_0/src/test/org/apache/commons/math/linear/RealVectorFormatTest.java Sun Jul 27 12:15:22 2008
@@ -0,0 +1,31 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.commons.math.linear;
+
+import java.util.Locale;
+
+
+public class RealVectorFormatTest extends RealVectorFormatAbstractTest {
+ protected char getDecimalCharacter() {
+ return '.';
+ }
+
+ protected Locale getLocale() {
+ return Locale.US;
+ }
+}
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