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DoubleMatrix1D (Colt 1.2.0 - API Specification)
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cern.colt.matrix</FONT>
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Class DoubleMatrix1D</H2>
<PRE>
<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../cern/colt/PersistentObject.html" title="class in cern.colt">cern.colt.PersistentObject</A>
<IMG SRC="../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../cern/colt/matrix/impl/AbstractMatrix.html" title="class in cern.colt.matrix.impl">cern.colt.matrix.impl.AbstractMatrix</A>
<IMG SRC="../../../resources/inherit.gif" ALT="extended by"><A HREF="../../../cern/colt/matrix/impl/AbstractMatrix1D.html" title="class in cern.colt.matrix.impl">cern.colt.matrix.impl.AbstractMatrix1D</A>
<IMG SRC="../../../resources/inherit.gif" ALT="extended by"><B>cern.colt.matrix.DoubleMatrix1D</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Cloneable.html" title="class or interface in java.lang">Cloneable</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/Serializable.html" title="class or interface in java.io">Serializable</A></DD>
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<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../cern/colt/matrix/impl/DenseDoubleMatrix1D.html" title="class in cern.colt.matrix.impl">DenseDoubleMatrix1D</A>, <A HREF="../../../cern/colt/matrix/impl/SparseDoubleMatrix1D.html" title="class in cern.colt.matrix.impl">SparseDoubleMatrix1D</A></DD>
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<DT>public abstract class <B>DoubleMatrix1D</B><DT>extends <A HREF="../../../cern/colt/matrix/impl/AbstractMatrix1D.html" title="class in cern.colt.matrix.impl">AbstractMatrix1D</A></DL>
<P>
Abstract base class for 1-d matrices (aka <i>vectors</i>) holding <tt>double</tt> elements.
First see the <a href="package-summary.html">package summary</a> and javadoc <a href="package-tree.html">tree view</a> to get the broad picture.
<p>
A matrix has a number of cells (its <i>size</i>), which are assigned upon instance construction.
Elements are accessed via zero based indexes.
Legal indexes are of the form <tt>[0..size()-1]</tt>.
Any attempt to access an element at a coordinate <tt>index<0 || index>=size()</tt> will throw an <tt>IndexOutOfBoundsException</tt>.
<P>
<P>
<DL>
<DT><B>Version:</B></DT>
<DD>1.0, 09/24/99</DD>
<DT><B>See Also:</B><DD><A HREF="../../../serialized-form.html#cern.colt.matrix.DoubleMatrix1D">Serialized Form</A></DL>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#aggregate(cern.colt.function.DoubleDoubleFunction, cern.colt.function.DoubleFunction)">aggregate</A></B>(<A HREF="../../../cern/colt/function/DoubleDoubleFunction.html" title="interface in cern.colt.function">DoubleDoubleFunction</A> aggr,
<A HREF="../../../cern/colt/function/DoubleFunction.html" title="interface in cern.colt.function">DoubleFunction</A> f)</CODE>
<BR>
Applies a function to each cell and aggregates the results.</TD>
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<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#aggregate(cern.colt.matrix.DoubleMatrix1D, cern.colt.function.DoubleDoubleFunction, cern.colt.function.DoubleDoubleFunction)">aggregate</A></B>(<A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> other,
<A HREF="../../../cern/colt/function/DoubleDoubleFunction.html" title="interface in cern.colt.function">DoubleDoubleFunction</A> aggr,
<A HREF="../../../cern/colt/function/DoubleDoubleFunction.html" title="interface in cern.colt.function">DoubleDoubleFunction</A> f)</CODE>
<BR>
Applies a function to each corresponding cell of two matrices and aggregates the results.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#assign(double)">assign</A></B>(double value)</CODE>
<BR>
Sets all cells to the state specified by <tt>value</tt>.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#assign(double[])">assign</A></B>(double[] values)</CODE>
<BR>
Sets all cells to the state specified by <tt>values</tt>.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#assign(cern.colt.function.DoubleFunction)">assign</A></B>(<A HREF="../../../cern/colt/function/DoubleFunction.html" title="interface in cern.colt.function">DoubleFunction</A> function)</CODE>
<BR>
Assigns the result of a function to each cell; <tt>x[i] = function(x[i])</tt>.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#assign(cern.colt.matrix.DoubleMatrix1D)">assign</A></B>(<A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> other)</CODE>
<BR>
Replaces all cell values of the receiver with the values of another matrix.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#assign(cern.colt.matrix.DoubleMatrix1D, cern.colt.function.DoubleDoubleFunction)">assign</A></B>(<A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> y,
<A HREF="../../../cern/colt/function/DoubleDoubleFunction.html" title="interface in cern.colt.function">DoubleDoubleFunction</A> function)</CODE>
<BR>
Assigns the result of a function to each cell; <tt>x[i] = function(x[i],y[i])</tt>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#assign(cern.colt.matrix.DoubleMatrix1D, cern.colt.function.DoubleDoubleFunction, cern.colt.list.IntArrayList)">assign</A></B>(<A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> y,
<A HREF="../../../cern/colt/function/DoubleDoubleFunction.html" title="interface in cern.colt.function">DoubleDoubleFunction</A> function,
<A HREF="../../../cern/colt/list/IntArrayList.html" title="class in cern.colt.list">IntArrayList</A> nonZeroIndexes)</CODE>
<BR>
Assigns the result of a function to each cell; <tt>x[i] = function(x[i],y[i])</tt>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#cardinality()">cardinality</A></B>()</CODE>
<BR>
Returns the number of cells having non-zero values; ignores tolerance.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#copy()">copy</A></B>()</CODE>
<BR>
Constructs and returns a deep copy of the receiver.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#equals(double)">equals</A></B>(double value)</CODE>
<BR>
Returns whether all cells are equal to the given value.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#equals(java.lang.Object)">equals</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> obj)</CODE>
<BR>
Compares this object against the specified object.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#get(int)">get</A></B>(int index)</CODE>
<BR>
Returns the matrix cell value at coordinate <tt>index</tt>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#getNonZeros(cern.colt.list.IntArrayList, cern.colt.list.DoubleArrayList)">getNonZeros</A></B>(<A HREF="../../../cern/colt/list/IntArrayList.html" title="class in cern.colt.list">IntArrayList</A> indexList,
<A HREF="../../../cern/colt/list/DoubleArrayList.html" title="class in cern.colt.list">DoubleArrayList</A> valueList)</CODE>
<BR>
Fills the coordinates and values of cells having non-zero values into the specified lists.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#getNonZeros(cern.colt.list.IntArrayList, cern.colt.list.DoubleArrayList, int)">getNonZeros</A></B>(<A HREF="../../../cern/colt/list/IntArrayList.html" title="class in cern.colt.list">IntArrayList</A> indexList,
<A HREF="../../../cern/colt/list/DoubleArrayList.html" title="class in cern.colt.list">DoubleArrayList</A> valueList,
int maxCardinality)</CODE>
<BR>
Fills the coordinates and values of cells having non-zero values into the specified lists.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#getQuick(int)">getQuick</A></B>(int index)</CODE>
<BR>
Returns the matrix cell value at coordinate <tt>index</tt>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#like()">like</A></B>()</CODE>
<BR>
Construct and returns a new empty matrix <i>of the same dynamic type</i> as the receiver, having the same size.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#like(int)">like</A></B>(int size)</CODE>
<BR>
Construct and returns a new empty matrix <i>of the same dynamic type</i> as the receiver, having the specified size.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract <A HREF="../../../cern/colt/matrix/DoubleMatrix2D.html" title="class in cern.colt.matrix">DoubleMatrix2D</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#like2D(int, int)">like2D</A></B>(int rows,
int columns)</CODE>
<BR>
Construct and returns a new 2-d matrix <i>of the corresponding dynamic type</i>, entirelly independent of the receiver.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#set(int, double)">set</A></B>(int index,
double value)</CODE>
<BR>
Sets the matrix cell at coordinate <tt>index</tt> to the specified value.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>abstract void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#setQuick(int, double)">setQuick</A></B>(int index,
double value)</CODE>
<BR>
Sets the matrix cell at coordinate <tt>index</tt> to the specified value.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#swap(cern.colt.matrix.DoubleMatrix1D)">swap</A></B>(<A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> other)</CODE>
<BR>
Swaps each element <tt>this[i]</tt> with <tt>other[i]</tt>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#toArray()">toArray</A></B>()</CODE>
<BR>
Constructs and returns a 1-dimensional array containing the cell values.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#toArray(double[])">toArray</A></B>(double[] values)</CODE>
<BR>
Fills the cell values into the specified 1-dimensional array.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#toString()">toString</A></B>()</CODE>
<BR>
Returns a string representation using default formatting.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#viewFlip()">viewFlip</A></B>()</CODE>
<BR>
Constructs and returns a new <i>flip view</i>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#viewPart(int, int)">viewPart</A></B>(int index,
int width)</CODE>
<BR>
Constructs and returns a new <i>sub-range view</i> that is a <tt>width</tt> sub matrix starting at <tt>index</tt>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#viewSelection(cern.colt.function.DoubleProcedure)">viewSelection</A></B>(<A HREF="../../../cern/colt/function/DoubleProcedure.html" title="interface in cern.colt.function">DoubleProcedure</A> condition)</CODE>
<BR>
Constructs and returns a new <i>selection view</i> that is a matrix holding the cells matching the given condition.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#viewSelection(int[])">viewSelection</A></B>(int[] indexes)</CODE>
<BR>
Constructs and returns a new <i>selection view</i> that is a matrix holding the indicated cells.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#viewSorted()">viewSorted</A></B>()</CODE>
<BR>
Sorts the vector into ascending order, according to the <i>natural ordering</i>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#viewStrides(int)">viewStrides</A></B>(int stride)</CODE>
<BR>
Constructs and returns a new <i>stride view</i> which is a sub matrix consisting of every i-th cell.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#zDotProduct(cern.colt.matrix.DoubleMatrix1D)">zDotProduct</A></B>(<A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> y)</CODE>
<BR>
Returns the dot product of two vectors x and y, which is <tt>Sum(x[i]*y[i])</tt>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#zDotProduct(cern.colt.matrix.DoubleMatrix1D, int, int)">zDotProduct</A></B>(<A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> y,
int from,
int length)</CODE>
<BR>
Returns the dot product of two vectors x and y, which is <tt>Sum(x[i]*y[i])</tt>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#zDotProduct(cern.colt.matrix.DoubleMatrix1D, int, int, cern.colt.list.IntArrayList)">zDotProduct</A></B>(<A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> y,
int from,
int length,
<A HREF="../../../cern/colt/list/IntArrayList.html" title="class in cern.colt.list">IntArrayList</A> nonZeroIndexes)</CODE>
<BR>
Returns the dot product of two vectors x and y, which is <tt>Sum(x[i]*y[i])</tt>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html#zSum()">zSum</A></B>()</CODE>
<BR>
Returns the sum of all cells; <tt>Sum( x[i] )</tt>.</TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_cern.colt.matrix.impl.AbstractMatrix1D"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class cern.colt.matrix.impl.<A HREF="../../../cern/colt/matrix/impl/AbstractMatrix1D.html" title="class in cern.colt.matrix.impl">AbstractMatrix1D</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../cern/colt/matrix/impl/AbstractMatrix1D.html#checkSize(cern.colt.matrix.impl.AbstractMatrix1D)">checkSize</A>, <A HREF="../../../cern/colt/matrix/impl/AbstractMatrix1D.html#size()">size</A>, <A HREF="../../../cern/colt/matrix/impl/AbstractMatrix1D.html#toStringShort()">toStringShort</A></CODE></TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_cern.colt.matrix.impl.AbstractMatrix"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class cern.colt.matrix.impl.<A HREF="../../../cern/colt/matrix/impl/AbstractMatrix.html" title="class in cern.colt.matrix.impl">AbstractMatrix</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../cern/colt/matrix/impl/AbstractMatrix.html#ensureCapacity(int)">ensureCapacity</A>, <A HREF="../../../cern/colt/matrix/impl/AbstractMatrix.html#trimToSize()">trimToSize</A></CODE></TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_cern.colt.PersistentObject"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class cern.colt.<A HREF="../../../cern/colt/PersistentObject.html" title="class in cern.colt">PersistentObject</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../cern/colt/PersistentObject.html#clone()">clone</A></CODE></TD>
</TR>
</TABLE>
<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
</TR>
</TABLE>
<P>
<!-- ============ FIELD DETAIL =========== -->
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<!-- ============ METHOD DETAIL ========== -->
<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Method Detail</B></FONT></TD>
</TR>
</TABLE>
<A NAME="aggregate(cern.colt.function.DoubleDoubleFunction, cern.colt.function.DoubleFunction)"><!-- --></A><H3>
aggregate</H3>
<PRE>
public double <B>aggregate</B>(<A HREF="../../../cern/colt/function/DoubleDoubleFunction.html" title="interface in cern.colt.function">DoubleDoubleFunction</A> aggr,
<A HREF="../../../cern/colt/function/DoubleFunction.html" title="interface in cern.colt.function">DoubleFunction</A> f)</PRE>
<DL>
<DD>Applies a function to each cell and aggregates the results.
Returns a value <tt>v</tt> such that <tt>v==a(size())</tt> where <tt>a(i) == aggr( a(i-1), f(get(i)) )</tt> and terminators are <tt>a(1) == f(get(0)), a(0)==Double.NaN</tt>.
<p>
<b>Example:</b>
<pre>
cern.jet.math.Functions F = cern.jet.math.Functions.functions;
matrix = 0 1 2 3
// Sum( x[i]*x[i] )
matrix.aggregate(F.plus,F.square);
--> 14
</pre>
For further examples, see the <a href="package-summary.html#FunctionObjects">package doc</a>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>aggr</CODE> - an aggregation function taking as first argument the current aggregation and as second argument the transformed current cell value.<DD><CODE>f</CODE> - a function transforming the current cell value.
<DT><B>Returns:</B><DD>the aggregated measure.<DT><B>See Also:</B><DD><A HREF="../../../cern/jet/math/Functions.html" title="class in cern.jet.math"><CODE>Functions</CODE></A></DL>
</DD>
</DL>
<HR>
<A NAME="aggregate(cern.colt.matrix.DoubleMatrix1D, cern.colt.function.DoubleDoubleFunction, cern.colt.function.DoubleDoubleFunction)"><!-- --></A><H3>
aggregate</H3>
<PRE>
public double <B>aggregate</B>(<A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> other,
<A HREF="../../../cern/colt/function/DoubleDoubleFunction.html" title="interface in cern.colt.function">DoubleDoubleFunction</A> aggr,
<A HREF="../../../cern/colt/function/DoubleDoubleFunction.html" title="interface in cern.colt.function">DoubleDoubleFunction</A> f)</PRE>
<DL>
<DD>Applies a function to each corresponding cell of two matrices and aggregates the results.
Returns a value <tt>v</tt> such that <tt>v==a(size())</tt> where <tt>a(i) == aggr( a(i-1), f(get(i),other.get(i)) )</tt> and terminators are <tt>a(1) == f(get(0),other.get(0)), a(0)==Double.NaN</tt>.
<p>
<b>Example:</b>
<pre>
cern.jet.math.Functions F = cern.jet.math.Functions.functions;
x = 0 1 2 3
y = 0 1 2 3
// Sum( x[i]*y[i] )
x.aggregate(y, F.plus, F.mult);
--> 14
// Sum( (x[i]+y[i])^2 )
x.aggregate(y, F.plus, F.chain(F.square,F.plus));
--> 56
</pre>
For further examples, see the <a href="package-summary.html#FunctionObjects">package doc</a>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>aggr</CODE> - an aggregation function taking as first argument the current aggregation and as second argument the transformed current cell values.<DD><CODE>f</CODE> - a function transforming the current cell values.
<DT><B>Returns:</B><DD>the aggregated measure.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if <tt>size() != other.size()</tt>.<DT><B>See Also:</B><DD><A HREF="../../../cern/jet/math/Functions.html" title="class in cern.jet.math"><CODE>Functions</CODE></A></DL>
</DD>
</DL>
<HR>
<A NAME="assign(double[])"><!-- --></A><H3>
assign</H3>
<PRE>
public <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> <B>assign</B>(double[] values)</PRE>
<DL>
<DD>Sets all cells to the state specified by <tt>values</tt>.
<tt>values</tt> is required to have the same number of cells as the receiver.
<p>
The values are copied. So subsequent changes in <tt>values</tt> are not reflected in the matrix, and vice-versa.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>values</CODE> - the values to be filled into the cells.
<DT><B>Returns:</B><DD><tt>this</tt> (for convenience only).
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if <tt>values.length != size()</tt>.</DL>
</DD>
</DL>
<HR>
<A NAME="assign(double)"><!-- --></A><H3>
assign</H3>
<PRE>
public <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> <B>assign</B>(double value)</PRE>
<DL>
<DD>Sets all cells to the state specified by <tt>value</tt>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the value to be filled into the cells.
<DT><B>Returns:</B><DD><tt>this</tt> (for convenience only).</DL>
</DD>
</DL>
<HR>
<A NAME="assign(cern.colt.function.DoubleFunction)"><!-- --></A><H3>
assign</H3>
<PRE>
public <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> <B>assign</B>(<A HREF="../../../cern/colt/function/DoubleFunction.html" title="interface in cern.colt.function">DoubleFunction</A> function)</PRE>
<DL>
<DD>Assigns the result of a function to each cell; <tt>x[i] = function(x[i])</tt>.
(Iterates downwards from <tt>[size()-1]</tt> to <tt>[0]</tt>).
<p>
<b>Example:</b>
<pre>
// change each cell to its sine
matrix = 0.5 1.5 2.5 3.5
matrix.assign(cern.jet.math.Functions.sin);
-->
matrix == 0.479426 0.997495 0.598472 -0.350783
</pre>
For further examples, see the <a href="package-summary.html#FunctionObjects">package doc</a>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>function</CODE> - a function object taking as argument the current cell's value.
<DT><B>Returns:</B><DD><tt>this</tt> (for convenience only).<DT><B>See Also:</B><DD><A HREF="../../../cern/jet/math/Functions.html" title="class in cern.jet.math"><CODE>Functions</CODE></A></DL>
</DD>
</DL>
<HR>
<A NAME="assign(cern.colt.matrix.DoubleMatrix1D)"><!-- --></A><H3>
assign</H3>
<PRE>
public <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> <B>assign</B>(<A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> other)</PRE>
<DL>
<DD>Replaces all cell values of the receiver with the values of another matrix.
Both matrices must have the same size.
If both matrices share the same cells (as is the case if they are views derived from the same matrix) and intersect in an ambiguous way, then replaces <i>as if</i> using an intermediate auxiliary deep copy of <tt>other</tt>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>other</CODE> - the source matrix to copy from (may be identical to the receiver).
<DT><B>Returns:</B><DD><tt>this</tt> (for convenience only).
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if <tt>size() != other.size()</tt>.</DL>
</DD>
</DL>
<HR>
<A NAME="assign(cern.colt.matrix.DoubleMatrix1D, cern.colt.function.DoubleDoubleFunction)"><!-- --></A><H3>
assign</H3>
<PRE>
public <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> <B>assign</B>(<A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> y,
<A HREF="../../../cern/colt/function/DoubleDoubleFunction.html" title="interface in cern.colt.function">DoubleDoubleFunction</A> function)</PRE>
<DL>
<DD>Assigns the result of a function to each cell; <tt>x[i] = function(x[i],y[i])</tt>.
<p>
<b>Example:</b>
<pre>
// assign x[i] = x[i]<sup>y[i]</sup>
m1 = 0 1 2 3;
m2 = 0 2 4 6;
m1.assign(m2, cern.jet.math.Functions.pow);
-->
m1 == 1 1 16 729
</pre>
For further examples, see the <a href="package-summary.html#FunctionObjects">package doc</a>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>y</CODE> - the secondary matrix to operate on.<DD><CODE>function</CODE> - a function object taking as first argument the current cell's value of <tt>this</tt>,
and as second argument the current cell's value of <tt>y</tt>,
<DT><B>Returns:</B><DD><tt>this</tt> (for convenience only).
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if <tt>size() != y.size()</tt>.<DT><B>See Also:</B><DD><A HREF="../../../cern/jet/math/Functions.html" title="class in cern.jet.math"><CODE>Functions</CODE></A></DL>
</DD>
</DL>
<HR>
<A NAME="assign(cern.colt.matrix.DoubleMatrix1D, cern.colt.function.DoubleDoubleFunction, cern.colt.list.IntArrayList)"><!-- --></A><H3>
assign</H3>
<PRE>
public <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> <B>assign</B>(<A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> y,
<A HREF="../../../cern/colt/function/DoubleDoubleFunction.html" title="interface in cern.colt.function">DoubleDoubleFunction</A> function,
<A HREF="../../../cern/colt/list/IntArrayList.html" title="class in cern.colt.list">IntArrayList</A> nonZeroIndexes)</PRE>
<DL>
<DD>Assigns the result of a function to each cell; <tt>x[i] = function(x[i],y[i])</tt>.
(Iterates downwards from <tt>[size()-1]</tt> to <tt>[0]</tt>).
<p>
<b>Example:</b>
<pre>
// assign x[i] = x[i]<sup>y[i]</sup>
m1 = 0 1 2 3;
m2 = 0 2 4 6;
m1.assign(m2, cern.jet.math.Functions.pow);
-->
m1 == 1 1 16 729
// for non-standard functions there is no shortcut:
m1.assign(m2,
new DoubleDoubleFunction() {
public double apply(double x, double y) { return Math.pow(x,y); }
}
);
</pre>
For further examples, see the <a href="package-summary.html#FunctionObjects">package doc</a>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>y</CODE> - the secondary matrix to operate on.<DD><CODE>function</CODE> - a function object taking as first argument the current cell's value of <tt>this</tt>,
and as second argument the current cell's value of <tt>y</tt>,
<DT><B>Returns:</B><DD><tt>this</tt> (for convenience only).
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if <tt>size() != y.size()</tt>.<DT><B>See Also:</B><DD><A HREF="../../../cern/jet/math/Functions.html" title="class in cern.jet.math"><CODE>Functions</CODE></A></DL>
</DD>
</DL>
<HR>
<A NAME="cardinality()"><!-- --></A><H3>
cardinality</H3>
<PRE>
public int <B>cardinality</B>()</PRE>
<DL>
<DD>Returns the number of cells having non-zero values; ignores tolerance.
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>
<A NAME="copy()"><!-- --></A><H3>
copy</H3>
<PRE>
public <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> <B>copy</B>()</PRE>
<DL>
<DD>Constructs and returns a deep copy of the receiver.
<p>
<b>Note that the returned matrix is an independent deep copy.</b>
The returned matrix is not backed by this matrix, so changes in the returned matrix are not reflected in this matrix, and vice-versa.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>a deep copy of the receiver.</DL>
</DD>
</DL>
<HR>
<A NAME="equals(double)"><!-- --></A><H3>
equals</H3>
<PRE>
public boolean <B>equals</B>(double value)</PRE>
<DL>
<DD>Returns whether all cells are equal to the given value.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the value to test against.
<DT><B>Returns:</B><DD><tt>true</tt> if all cells are equal to the given value, <tt>false</tt> otherwise.</DL>
</DD>
</DL>
<HR>
<A NAME="equals(java.lang.Object)"><!-- --></A><H3>
equals</H3>
<PRE>
public boolean <B>equals</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> obj)</PRE>
<DL>
<DD>Compares this object against the specified object.
The result is <code>true</code> if and only if the argument is
not <code>null</code> and is at least a <code>DoubleMatrix1D</code> object
that has the same sizes as the receiver and
has exactly the same values at the same indexes.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>obj</CODE> - the object to compare with.
<DT><B>Returns:</B><DD><code>true</code> if the objects are the same;
<code>false</code> otherwise.</DL>
</DD>
</DL>
<HR>
<A NAME="get(int)"><!-- --></A><H3>
get</H3>
<PRE>
public double <B>get</B>(int index)</PRE>
<DL>
<DD>Returns the matrix cell value at coordinate <tt>index</tt>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>index</CODE> - the index of the cell.
<DT><B>Returns:</B><DD>the value of the specified cell.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IndexOutOfBoundsException.html" title="class or interface in java.lang">IndexOutOfBoundsException</A></CODE> - if <tt>index<0 || index>=size()</tt>.</DL>
</DD>
</DL>
<HR>
<A NAME="getNonZeros(cern.colt.list.IntArrayList, cern.colt.list.DoubleArrayList)"><!-- --></A><H3>
getNonZeros</H3>
<PRE>
public void <B>getNonZeros</B>(<A HREF="../../../cern/colt/list/IntArrayList.html" title="class in cern.colt.list">IntArrayList</A> indexList,
<A HREF="../../../cern/colt/list/DoubleArrayList.html" title="class in cern.colt.list">DoubleArrayList</A> valueList)</PRE>
<DL>
<DD>Fills the coordinates and values of cells having non-zero values into the specified lists.
Fills into the lists, starting at index 0.
After this call returns the specified lists all have a new size, the number of non-zero values.
<p>
In general, fill order is <i>unspecified</i>.
This implementation fills like: <tt>for (index = 0..size()-1) do ... </tt>.
However, subclasses are free to us any other order, even an order that may change over time as cell values are changed.
(Of course, result lists indexes are guaranteed to correspond to the same cell).
<p>
<b>Example:</b>
<br>
<pre>
0, 0, 8, 0, 7
-->
indexList = (2,4)
valueList = (8,7)
</pre>
In other words, <tt>get(2)==8, get(4)==7</tt>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>indexList</CODE> - the list to be filled with indexes, can have any size.<DD><CODE>valueList</CODE> - the list to be filled with values, can have any size.</DL>
</DD>
</DL>
<HR>
<A NAME="getNonZeros(cern.colt.list.IntArrayList, cern.colt.list.DoubleArrayList, int)"><!-- --></A><H3>
getNonZeros</H3>
<PRE>
public void <B>getNonZeros</B>(<A HREF="../../../cern/colt/list/IntArrayList.html" title="class in cern.colt.list">IntArrayList</A> indexList,
<A HREF="../../../cern/colt/list/DoubleArrayList.html" title="class in cern.colt.list">DoubleArrayList</A> valueList,
int maxCardinality)</PRE>
<DL>
<DD>Fills the coordinates and values of cells having non-zero values into the specified lists.
Fills into the lists, starting at index 0.
After this call returns the specified lists all have a new size, the number of non-zero values.
<p>
In general, fill order is <i>unspecified</i>.
This implementation fills like: <tt>for (index = 0..size()-1) do ... </tt>.
However, subclasses are free to us any other order, even an order that may change over time as cell values are changed.
(Of course, result lists indexes are guaranteed to correspond to the same cell).
<p>
<b>Example:</b>
<br>
<pre>
0, 0, 8, 0, 7
-->
indexList = (2,4)
valueList = (8,7)
</pre>
In other words, <tt>get(2)==8, get(4)==7</tt>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>indexList</CODE> - the list to be filled with indexes, can have any size.<DD><CODE>valueList</CODE> - the list to be filled with values, can have any size.</DL>
</DD>
</DL>
<HR>
<A NAME="getQuick(int)"><!-- --></A><H3>
getQuick</H3>
<PRE>
public abstract double <B>getQuick</B>(int index)</PRE>
<DL>
<DD>Returns the matrix cell value at coordinate <tt>index</tt>.
<p>Provided with invalid parameters this method may return invalid objects without throwing any exception.
<b>You should only use this method when you are absolutely sure that the coordinate is within bounds.</b>
Precondition (unchecked): <tt>index<0 || index>=size()</tt>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>index</CODE> - the index of the cell.
<DT><B>Returns:</B><DD>the value of the specified cell.</DL>
</DD>
</DL>
<HR>
<A NAME="like()"><!-- --></A><H3>
like</H3>
<PRE>
public <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> <B>like</B>()</PRE>
<DL>
<DD>Construct and returns a new empty matrix <i>of the same dynamic type</i> as the receiver, having the same size.
For example, if the receiver is an instance of type <tt>DenseDoubleMatrix1D</tt> the new matrix must also be of type <tt>DenseDoubleMatrix1D</tt>,
if the receiver is an instance of type <tt>SparseDoubleMatrix1D</tt> the new matrix must also be of type <tt>SparseDoubleMatrix1D</tt>, etc.
In general, the new matrix should have internal parametrization as similar as possible.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>a new empty matrix of the same dynamic type.</DL>
</DD>
</DL>
<HR>
<A NAME="like(int)"><!-- --></A><H3>
like</H3>
<PRE>
public abstract <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> <B>like</B>(int size)</PRE>
<DL>
<DD>Construct and returns a new empty matrix <i>of the same dynamic type</i> as the receiver, having the specified size.
For example, if the receiver is an instance of type <tt>DenseDoubleMatrix1D</tt> the new matrix must also be of type <tt>DenseDoubleMatrix1D</tt>,
if the receiver is an instance of type <tt>SparseDoubleMatrix1D</tt> the new matrix must also be of type <tt>SparseDoubleMatrix1D</tt>, etc.
In general, the new matrix should have internal parametrization as similar as possible.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>size</CODE> - the number of cell the matrix shall have.
<DT><B>Returns:</B><DD>a new empty matrix of the same dynamic type.</DL>
</DD>
</DL>
<HR>
<A NAME="like2D(int, int)"><!-- --></A><H3>
like2D</H3>
<PRE>
public abstract <A HREF="../../../cern/colt/matrix/DoubleMatrix2D.html" title="class in cern.colt.matrix">DoubleMatrix2D</A> <B>like2D</B>(int rows,
int columns)</PRE>
<DL>
<DD>Construct and returns a new 2-d matrix <i>of the corresponding dynamic type</i>, entirelly independent of the receiver.
For example, if the receiver is an instance of type <tt>DenseDoubleMatrix1D</tt> the new matrix must be of type <tt>DenseDoubleMatrix2D</tt>,
if the receiver is an instance of type <tt>SparseDoubleMatrix1D</tt> the new matrix must be of type <tt>SparseDoubleMatrix2D</tt>, etc.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>rows</CODE> - the number of rows the matrix shall have.<DD><CODE>columns</CODE> - the number of columns the matrix shall have.
<DT><B>Returns:</B><DD>a new matrix of the corresponding dynamic type.</DL>
</DD>
</DL>
<HR>
<A NAME="set(int, double)"><!-- --></A><H3>
set</H3>
<PRE>
public void <B>set</B>(int index,
double value)</PRE>
<DL>
<DD>Sets the matrix cell at coordinate <tt>index</tt> to the specified value.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>index</CODE> - the index of the cell.<DD><CODE>value</CODE> - the value to be filled into the specified cell.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IndexOutOfBoundsException.html" title="class or interface in java.lang">IndexOutOfBoundsException</A></CODE> - if <tt>index<0 || index>=size()</tt>.</DL>
</DD>
</DL>
<HR>
<A NAME="setQuick(int, double)"><!-- --></A><H3>
setQuick</H3>
<PRE>
public abstract void <B>setQuick</B>(int index,
double value)</PRE>
<DL>
<DD>Sets the matrix cell at coordinate <tt>index</tt> to the specified value.
<p>Provided with invalid parameters this method may access illegal indexes without throwing any exception.
<b>You should only use this method when you are absolutely sure that the coordinate is within bounds.</b>
Precondition (unchecked): <tt>index<0 || index>=size()</tt>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>index</CODE> - the index of the cell.<DD><CODE>value</CODE> - the value to be filled into the specified cell.</DL>
</DD>
</DL>
<HR>
<A NAME="swap(cern.colt.matrix.DoubleMatrix1D)"><!-- --></A><H3>
swap</H3>
<PRE>
public void <B>swap</B>(<A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> other)</PRE>
<DL>
<DD>Swaps each element <tt>this[i]</tt> with <tt>other[i]</tt>.
<P>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if <tt>size() != other.size()</tt>.</DL>
</DD>
</DL>
<HR>
<A NAME="toArray()"><!-- --></A><H3>
toArray</H3>
<PRE>
public double[] <B>toArray</B>()</PRE>
<DL>
<DD>Constructs and returns a 1-dimensional array containing the cell values.
The values are copied. So subsequent changes in <tt>values</tt> are not reflected in the matrix, and vice-versa.
The returned array <tt>values</tt> has the form
<br>
<tt>for (int i=0; i < size(); i++) values[i] = get(i);</tt>
<P>
<DD><DL>
<DT><B>Returns:</B><DD>an array filled with the values of the cells.</DL>
</DD>
</DL>
<HR>
<A NAME="toArray(double[])"><!-- --></A><H3>
toArray</H3>
<PRE>
public void <B>toArray</B>(double[] values)</PRE>
<DL>
<DD>Fills the cell values into the specified 1-dimensional array.
The values are copied. So subsequent changes in <tt>values</tt> are not reflected in the matrix, and vice-versa.
After this call returns the array <tt>values</tt> has the form
<br>
<tt>for (int i=0; i < size(); i++) values[i] = get(i);</tt>
<P>
<DD><DL>
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if <tt>values.length < size()</tt>.</DL>
</DD>
</DL>
<HR>
<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>toString</B>()</PRE>
<DL>
<DD>Returns a string representation using default formatting.
<P>
<DD><DL>
<DT><B>See Also:</B><DD><A HREF="../../../cern/colt/matrix/doublealgo/Formatter.html" title="class in cern.colt.matrix.doublealgo"><CODE>Formatter</CODE></A></DL>
</DD>
</DL>
<HR>
<A NAME="viewFlip()"><!-- --></A><H3>
viewFlip</H3>
<PRE>
public <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> <B>viewFlip</B>()</PRE>
<DL>
<DD>Constructs and returns a new <i>flip view</i>.
What used to be index <tt>0</tt> is now index <tt>size()-1</tt>, ..., what used to be index <tt>size()-1</tt> is now index <tt>0</tt>.
The returned view is backed by this matrix, so changes in the returned view are reflected in this matrix, and vice-versa.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>a new flip view.</DL>
</DD>
</DL>
<HR>
<A NAME="viewPart(int, int)"><!-- --></A><H3>
viewPart</H3>
<PRE>
public <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> <B>viewPart</B>(int index,
int width)</PRE>
<DL>
<DD>Constructs and returns a new <i>sub-range view</i> that is a <tt>width</tt> sub matrix starting at <tt>index</tt>.
Operations on the returned view can only be applied to the restricted range.
Any attempt to access coordinates not contained in the view will throw an <tt>IndexOutOfBoundsException</tt>.
<p>
<b>Note that the view is really just a range restriction:</b>
The returned matrix is backed by this matrix, so changes in the returned matrix are reflected in this matrix, and vice-versa.
<p>
The view contains the cells from <tt>index..index+width-1</tt>.
and has <tt>view.size() == width</tt>.
A view's legal coordinates are again zero based, as usual.
In other words, legal coordinates of the view are <tt>0 .. view.size()-1==width-1</tt>.
As usual, any attempt to access a cell at other coordinates will throw an <tt>IndexOutOfBoundsException</tt>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>index</CODE> - The index of the first cell.<DD><CODE>width</CODE> - The width of the range.
<DT><B>Returns:</B><DD>the new view.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IndexOutOfBoundsException.html" title="class or interface in java.lang">IndexOutOfBoundsException</A></CODE> - if <tt>index<0 || width<0 || index+width>size()</tt>.</DL>
</DD>
</DL>
<HR>
<A NAME="viewSelection(int[])"><!-- --></A><H3>
viewSelection</H3>
<PRE>
public <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> <B>viewSelection</B>(int[] indexes)</PRE>
<DL>
<DD>Constructs and returns a new <i>selection view</i> that is a matrix holding the indicated cells.
There holds <tt>view.size() == indexes.length</tt> and <tt>view.get(i) == this.get(indexes[i])</tt>.
Indexes can occur multiple times and can be in arbitrary order.
<p>
<b>Example:</b>
<br>
<pre>
this = (0,0,8,0,7)
indexes = (0,2,4,2)
-->
view = (0,8,7,8)
</pre>
Note that modifying <tt>indexes</tt> after this call has returned has no effect on the view.
The returned view is backed by this matrix, so changes in the returned view are reflected in this matrix, and vice-versa.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>indexes</CODE> - The indexes of the cells that shall be visible in the new view. To indicate that <i>all</i> cells shall be visible, simply set this parameter to <tt>null</tt>.
<DT><B>Returns:</B><DD>the new view.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IndexOutOfBoundsException.html" title="class or interface in java.lang">IndexOutOfBoundsException</A></CODE> - if <tt>!(0 <= indexes[i] < size())</tt> for any <tt>i=0..indexes.length()-1</tt>.</DL>
</DD>
</DL>
<HR>
<A NAME="viewSelection(cern.colt.function.DoubleProcedure)"><!-- --></A><H3>
viewSelection</H3>
<PRE>
public <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> <B>viewSelection</B>(<A HREF="../../../cern/colt/function/DoubleProcedure.html" title="interface in cern.colt.function">DoubleProcedure</A> condition)</PRE>
<DL>
<DD>Constructs and returns a new <i>selection view</i> that is a matrix holding the cells matching the given condition.
Applies the condition to each cell and takes only those cells where <tt>condition.apply(get(i))</tt> yields <tt>true</tt>.
<p>
<b>Example:</b>
<br>
<pre>
// extract and view all cells with even value
matrix = 0 1 2 3
matrix.viewSelection(
new DoubleProcedure() {
public final boolean apply(double a) { return a % 2 == 0; }
}
);
-->
matrix == 0 2
</pre>
For further examples, see the <a href="package-summary.html#FunctionObjects">package doc</a>.
The returned view is backed by this matrix, so changes in the returned view are reflected in this matrix, and vice-versa.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>condition</CODE> - The condition to be matched.
<DT><B>Returns:</B><DD>the new view.</DL>
</DD>
</DL>
<HR>
<A NAME="viewSorted()"><!-- --></A><H3>
viewSorted</H3>
<PRE>
public <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> <B>viewSorted</B>()</PRE>
<DL>
<DD>Sorts the vector into ascending order, according to the <i>natural ordering</i>.
This sort is guaranteed to be <i>stable</i>.
For further information, see <A HREF="../../../cern/colt/matrix/doublealgo/Sorting.html#sort(cern.colt.matrix.DoubleMatrix1D)"><CODE>Sorting.sort(DoubleMatrix1D)</CODE></A>.
For more advanced sorting functionality, see <A HREF="../../../cern/colt/matrix/doublealgo/Sorting.html" title="class in cern.colt.matrix.doublealgo"><CODE>Sorting</CODE></A>.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>a new sorted vector (matrix) view.</DL>
</DD>
</DL>
<HR>
<A NAME="viewStrides(int)"><!-- --></A><H3>
viewStrides</H3>
<PRE>
public <A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> <B>viewStrides</B>(int stride)</PRE>
<DL>
<DD>Constructs and returns a new <i>stride view</i> which is a sub matrix consisting of every i-th cell.
More specifically, the view has size <tt>this.size()/stride</tt> holding cells <tt>this.get(i*stride)</tt> for all <tt>i = 0..size()/stride - 1</tt>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>stride</CODE> - the step factor.
<DT><B>Returns:</B><DD>the new view.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/IndexOutOfBoundsException.html" title="class or interface in java.lang">IndexOutOfBoundsException</A></CODE> - if <tt>stride <= 0</tt>.</DL>
</DD>
</DL>
<HR>
<A NAME="zDotProduct(cern.colt.matrix.DoubleMatrix1D)"><!-- --></A><H3>
zDotProduct</H3>
<PRE>
public double <B>zDotProduct</B>(<A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> y)</PRE>
<DL>
<DD>Returns the dot product of two vectors x and y, which is <tt>Sum(x[i]*y[i])</tt>.
Where <tt>x == this</tt>.
Operates on cells at indexes <tt>0 .. Math.min(size(),y.size())</tt>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>y</CODE> - the second vector.
<DT><B>Returns:</B><DD>the sum of products.</DL>
</DD>
</DL>
<HR>
<A NAME="zDotProduct(cern.colt.matrix.DoubleMatrix1D, int, int)"><!-- --></A><H3>
zDotProduct</H3>
<PRE>
public double <B>zDotProduct</B>(<A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> y,
int from,
int length)</PRE>
<DL>
<DD>Returns the dot product of two vectors x and y, which is <tt>Sum(x[i]*y[i])</tt>.
Where <tt>x == this</tt>.
Operates on cells at indexes <tt>from .. Min(size(),y.size(),from+length)-1</tt>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>y</CODE> - the second vector.<DD><CODE>from</CODE> - the first index to be considered.<DD><CODE>length</CODE> - the number of cells to be considered.
<DT><B>Returns:</B><DD>the sum of products; zero if <tt>from<0 || length<0</tt>.</DL>
</DD>
</DL>
<HR>
<A NAME="zDotProduct(cern.colt.matrix.DoubleMatrix1D, int, int, cern.colt.list.IntArrayList)"><!-- --></A><H3>
zDotProduct</H3>
<PRE>
public double <B>zDotProduct</B>(<A HREF="../../../cern/colt/matrix/DoubleMatrix1D.html" title="class in cern.colt.matrix">DoubleMatrix1D</A> y,
int from,
int length,
<A HREF="../../../cern/colt/list/IntArrayList.html" title="class in cern.colt.list">IntArrayList</A> nonZeroIndexes)</PRE>
<DL>
<DD>Returns the dot product of two vectors x and y, which is <tt>Sum(x[i]*y[i])</tt>.
Where <tt>x == this</tt>.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>y</CODE> - the second vector.<DD><CODE>nonZeroIndexes</CODE> - the indexes of cells in <tt>y</tt>having a non-zero value.
<DT><B>Returns:</B><DD>the sum of products.</DL>
</DD>
</DL>
<HR>
<A NAME="zSum()"><!-- --></A><H3>
zSum</H3>
<PRE>
public double <B>zSum</B>()</PRE>
<DL>
<DD>Returns the sum of all cells; <tt>Sum( x[i] )</tt>.
<P>
<DD><DL>
<DT><B>Returns:</B><DD>the sum.</DL>
</DD>
</DL>
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