/** {@inheritDoc} */
public OpenMapRealVector subtract(double[] v) throws IllegalArgumentException {
checkVectorDimensions(v.length);
OpenMapRealVector res = new OpenMapRealVector(this);
for (int i = 0; i < v.length; i++) {
if (entries.containsKey(i)) {
res.setEntry(i, entries.get(i) - v[i]);
} else {
res.setEntry(i, -v[i]);
}
}
return res;
}
/**
* Optimized method to add two OpenMapRealVectors.
*
* @param v Vector to add with
* @return The sum of <code>this</code> with <code>v</code>
* @throws IllegalArgumentException If the dimensions don't match
*/
public OpenMapRealVector add(OpenMapRealVector v) throws IllegalArgumentException {
checkVectorDimensions(v.getDimension());
OpenMapRealVector res = (OpenMapRealVector) copy();
Iterator iter = v.getEntries().iterator();
while (iter.hasNext()) {
iter.advance();
int key = iter.key();
if (entries.containsKey(key)) {
res.setEntry(key, entries.get(key) + iter.value());
} else {
res.setEntry(key, iter.value());
}
}
return res;
}
/** {@inheritDoc} */
public OpenMapRealVector append(double[] a) {
OpenMapRealVector res = new OpenMapRealVector(this, a.length);
for (int i = 0; i < a.length; i++) {
res.setEntry(i + virtualSize, a[i]);
}
return res;
}
/** {@inheritDoc} */
public void setSubVector(int index, double[] v) throws MatrixIndexException {
checkIndex(index);
checkIndex(index + v.length - 1);
for (int i = 0; i < v.length; i++) {
setEntry(i + index, v[i]);
}
}
/** {@inheritDoc} */
public OpenMapRealVector add(double[] v) throws IllegalArgumentException {
checkVectorDimensions(v.length);
OpenMapRealVector res = new OpenMapRealVector(getDimension());
for (int i = 0; i < v.length; i++) {
res.setEntry(i, v[i] + getEntry(i));
}
return res;
}
/**
* Optimized method to append a OpenMapRealVector.
*
* @param v vector to append
* @return The result of appending <code>v</code> to self
*/
public OpenMapRealVector append(OpenMapRealVector v) {
OpenMapRealVector res = new OpenMapRealVector(this, v.getDimension());
Iterator iter = v.entries.iterator();
while (iter.hasNext()) {
iter.advance();
res.setEntry(iter.key() + virtualSize, iter.value());
}
return res;
}
/** {@inheritDoc} */
public OpenMapRealVector ebeMultiply(double[] v) throws IllegalArgumentException {
checkVectorDimensions(v.length);
OpenMapRealVector res = new OpenMapRealVector(this);
Iterator iter = res.entries.iterator();
while (iter.hasNext()) {
iter.advance();
res.setEntry(iter.key(), iter.value() * v[iter.key()]);
}
return res;
}
/** {@inheritDoc} */
public OpenMapRealVector ebeDivide(RealVector v) throws IllegalArgumentException {
checkVectorDimensions(v.getDimension());
OpenMapRealVector res = new OpenMapRealVector(this);
Iterator iter = res.entries.iterator();
while (iter.hasNext()) {
iter.advance();
res.setEntry(iter.key(), iter.value() / v.getEntry(iter.key()));
}
return res;
}
/** {@inheritDoc} */
public OpenMapRealVector getSubVector(int index, int n) throws MatrixIndexException {
checkIndex(index);
checkIndex(index + n - 1);
OpenMapRealVector res = new OpenMapRealVector(n);
int end = index + n;
Iterator iter = entries.iterator();
while (iter.hasNext()) {
iter.advance();
int key = iter.key();
if (key >= index && key < end) {
res.setEntry(key - index, iter.value());
}
}
return res;
}
/** {@inheritDoc} */
public OpenMapRealVector mapLogToSelf() {
for (int i = 0; i < virtualSize; i++) {
setEntry(i, Math.log(getEntry(i)));
}
return this;
}
/** {@inheritDoc} */
public OpenMapRealVector mapInvToSelf() {
for (int i = 0; i < virtualSize; i++) {
setEntry(i, 1.0 / getEntry(i));
}
return this;
}
/** {@inheritDoc} */
public OpenMapRealVector mapAddToSelf(double d) {
for (int i = 0; i < virtualSize; i++) {
setEntry(i, getEntry(i) + d);
}
return this;
}
/** {@inheritDoc} */
public OpenMapRealVector append(double d) {
OpenMapRealVector res = new OpenMapRealVector(this, 1);
res.setEntry(virtualSize, d);
return res;
}
/** {@inheritDoc} */
public void set(double value) {
for (int i = 0; i < virtualSize; i++) {
setEntry(i, value);
}
}