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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.5.0_10) on Fri Jan 26 16:34:50 NZDT 2007 --><TITLE>DoubleVector</TITLE><META NAME="keywords" CONTENT="weka.core.matrix.DoubleVector class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="DoubleVector";}</SCRIPT><NOSCRIPT></NOSCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=2 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" 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FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">weka.core.matrix</FONT><BR>Class DoubleVector</H2><PRE>java.lang.Object <IMG SRC="../../../resources/inherit.gif" ALT="extended by "><B>weka.core.matrix.DoubleVector</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD>java.lang.Cloneable</DD></DL><HR><DL><DT><PRE>public class <B>DoubleVector</B><DT>extends java.lang.Object<DT>implements java.lang.Cloneable</DL></PRE><P>A vector specialized on doubles.<P><P><DL><DT><B>Version:</B></DT> <DD>$Revision: 1.2 $</DD><DT><B>Author:</B></DT> <DD>Yong Wang</DD></DL><HR><P><!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#DoubleVector()">DoubleVector</A></B>()</CODE><BR> Constructs a null vector.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#DoubleVector(double[])">DoubleVector</A></B>(double[] v)</CODE><BR> Constructs a vector directly from a double array</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#DoubleVector(int)">DoubleVector</A></B>(int n)</CODE><BR> Constructs an n-vector of zeros.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#DoubleVector(int, double)">DoubleVector</A></B>(int n, double s)</CODE><BR> Constructs a constant n-vector.</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Method Summary</B></FONT></TH></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="../../../weka/core/matrix/DoubleVector.html#addElement(double)">addElement</A></B>(double x)</CODE><BR> Adds an element into the vector</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="../../../weka/core/matrix/DoubleVector.html#capacity()">capacity</A></B>()</CODE><BR> Gets the capacity of the vector.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#cat(weka.core.matrix.DoubleVector)">cat</A></B>(<A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> v)</CODE><BR> Combine two vectors together</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.Object</CODE></FONT></TD><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#clone()">clone</A></B>()</CODE><BR> Clones the DoubleVector object.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#copy()">copy</A></B>()</CODE><BR> Makes a deep copy of the vector</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#cumulate()">cumulate</A></B>()</CODE><BR> Returns a vector that stores the cumulated values of the original vector</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#cumulateInPlace()">cumulateInPlace</A></B>()</CODE><BR> Cumulates the original vector in place</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#dividedBy(weka.core.matrix.DoubleVector)">dividedBy</A></B>(<A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> v)</CODE><BR> Divided by another DoubleVector element by element</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#dividedByEquals(weka.core.matrix.DoubleVector)">dividedByEquals</A></B>(<A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> v)</CODE><BR> Divided by another DoubleVector element by element in place</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="../../../weka/core/matrix/DoubleVector.html#get(int)">get</A></B>(int i)</CODE><BR> Gets a single element.</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="../../../weka/core/matrix/DoubleVector.html#getArray()">getArray</A></B>()</CODE><BR> Access the internal one-dimensional array.</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="../../../weka/core/matrix/DoubleVector.html#getArrayCopy()">getArrayCopy</A></B>()</CODE><BR> Returns a copy of the DoubleVector usng a double array.</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="../../../weka/core/matrix/DoubleVector.html#indexOfMax()">indexOfMax</A></B>()</CODE><BR> Returns the index of the maximum.</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="../../../weka/core/matrix/DoubleVector.html#innerProduct(weka.core.matrix.DoubleVector)">innerProduct</A></B>(<A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> v)</CODE><BR> Returns the inner product of two DoubleVectors</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="../../../weka/core/matrix/DoubleVector.html#isEmpty()">isEmpty</A></B>()</CODE><BR> Checks if it is an empty vector</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#main(java.lang.String[])">main</A></B>(java.lang.String[] args)</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#map(java.lang.String, java.lang.String)">map</A></B>(java.lang.String className, java.lang.String method)</CODE><BR> Applies a method to the vector</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="../../../weka/core/matrix/DoubleVector.html#max()">max</A></B>()</CODE><BR> Returns the maximum value of all elements</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#minus(double)">minus</A></B>(double x)</CODE><BR> Subtracts a value</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#minus(weka.core.matrix.DoubleVector)">minus</A></B>(<A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> v)</CODE><BR> Subtracts another DoubleVector element by element</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#minusEquals(double)">minusEquals</A></B>(double x)</CODE><BR> Subtracts a value in place</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#minusEquals(weka.core.matrix.DoubleVector)">minusEquals</A></B>(<A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> v)</CODE><BR> Subtracts another DoubleVector element by element in place</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="../../../weka/core/matrix/DoubleVector.html#norm1()">norm1</A></B>()</CODE><BR> Returns the L1-norm of the vector</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="../../../weka/core/matrix/DoubleVector.html#norm2()">norm2</A></B>()</CODE><BR> Returns the L2-norm of the vector</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#plus(double)">plus</A></B>(double x)</CODE><BR> Adds a value to all the elements</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#plus(weka.core.matrix.DoubleVector)">plus</A></B>(<A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> v)</CODE><BR> Adds another vector element by element</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#plusEquals(double)">plusEquals</A></B>(double x)</CODE><BR> Adds a value to all the elements in place</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#plusEquals(weka.core.matrix.DoubleVector)">plusEquals</A></B>(<A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> v)</CODE><BR> Adds another vector in place element by element</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#random(int)">random</A></B>(int n)</CODE><BR> Returns a random vector of uniform distribution</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../weka/core/matrix/DoubleVector.html#rev()">rev</A></B>()</CODE><BR> Returns the reverse vector</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="../../../weka/core/matrix/DoubleVector.html#set(double)">set</A></B>(double s)</CODE><BR> Set all elements to a 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="../../../weka/core/matrix/DoubleVector.html#set(weka.core.matrix.DoubleVector)">set</A></B>(<A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> v)</CODE><BR> Set the elements using a DoubleVector</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="../../../weka/core/matrix/DoubleVector.html#set(int, double)">set</A></B>(int i, double s)</CODE><BR> Set a single element.</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="../../../weka/core/matrix/DoubleVector.html#set(int, int, double)">set</A></B>(int i0, int i1, double s)</CODE><BR> Set some elements to a 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="../../../weka/core/matrix/DoubleVector.html#set(int, int, double[], int)">set</A></B>(int i0, int i1, double[] v, int j0)</CODE><BR> Set some elements using a 2-D array</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="../../../weka/core/matrix/DoubleVector.html#set(int, int, weka.core.matrix.DoubleVector, int)">set</A></B>(int i0, int i1, <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> v, int j0)</CODE>⌨️ 快捷键说明
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