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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_07) on Fri Aug 25 15:15:40 BST 2006 --><TITLE>Regression (JFreeChart Class Library (version 1.0.2))</TITLE><META NAME="keywords" CONTENT="org.jfree.data.statistics.Regression class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="Regression (JFreeChart Class Library (version 1.0.2))";}</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" 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HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | 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">org.jfree.data.statistics</FONT><BR>Class Regression</H2><PRE>java.lang.Object <IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>org.jfree.data.statistics.Regression</B></PRE><HR><DL><DT><PRE>public abstract class <A HREF="../../../../src-html/org/jfree/data/statistics/Regression.html#line.53"><B>Regression</B></A><DT>extends java.lang.Object</DL></PRE><P>A utility class for fitting regression curves to data.<P><P><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="../../../../org/jfree/data/statistics/Regression.html#Regression()">Regression</A></B>()</CODE><BR> </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>static double[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/data/statistics/Regression.html#getOLSRegression(double[][])">getOLSRegression</A></B>(double[][] data)</CODE><BR> Returns the parameters 'a' and 'b' for an equation y = a + bx, fitted to the data using ordinary least squares regression.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static double[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/data/statistics/Regression.html#getOLSRegression(org.jfree.data.xy.XYDataset, int)">getOLSRegression</A></B>(<A HREF="../../../../org/jfree/data/xy/XYDataset.html" title="interface in org.jfree.data.xy">XYDataset</A> data, int series)</CODE><BR> Returns the parameters 'a' and 'b' for an equation y = a + bx, fitted to the data using ordinary least squares regression.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static double[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/data/statistics/Regression.html#getPowerRegression(double[][])">getPowerRegression</A></B>(double[][] data)</CODE><BR> Returns the parameters 'a' and 'b' for an equation y = ax^b, fitted to the data using a power regression equation.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static double[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/jfree/data/statistics/Regression.html#getPowerRegression(org.jfree.data.xy.XYDataset, int)">getPowerRegression</A></B>(<A HREF="../../../../org/jfree/data/xy/XYDataset.html" title="interface in org.jfree.data.xy">XYDataset</A> data, int series)</CODE><BR> Returns the parameters 'a' and 'b' for an equation y = ax^b, fitted to the data using a power regression equation.</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"><TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD></TR></TABLE> <P><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"><B>Constructor Detail</B></FONT></TH></TR></TABLE><A NAME="Regression()"><!-- --></A><H3>Regression</H3><PRE>public <A HREF="../../../../src-html/org/jfree/data/statistics/Regression.html#line.53"><B>Regression</B></A>()</PRE><DL></DL><!-- ============ METHOD DETAIL ========== --><A NAME="method_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2"><B>Method Detail</B></FONT></TH></TR></TABLE><A NAME="getOLSRegression(double[][])"><!-- --></A><H3>getOLSRegression</H3><PRE>public static double[] <A HREF="../../../../src-html/org/jfree/data/statistics/Regression.html#line.64"><B>getOLSRegression</B></A>(double[][] data)</PRE><DL><DD>Returns the parameters 'a' and 'b' for an equation y = a + bx, fitted to the data using ordinary least squares regression. The result is returned as a double[], where result[0] --> a, and result[1] --> b.<P><DD><DL><DT><B>Parameters:</B><DD><CODE>data</CODE> - the data.<DT><B>Returns:</B><DD>The parameters.</DL></DD></DL><HR><A NAME="getOLSRegression(org.jfree.data.xy.XYDataset, int)"><!-- --></A><H3>getOLSRegression</H3><PRE>public static double[] <A HREF="../../../../src-html/org/jfree/data/statistics/Regression.html#line.108"><B>getOLSRegression</B></A>(<A HREF="../../../../org/jfree/data/xy/XYDataset.html" title="interface in org.jfree.data.xy">XYDataset</A> data, int series)</PRE><DL><DD>Returns the parameters 'a' and 'b' for an equation y = a + bx, fitted to the data using ordinary least squares regression. The result is returned as a double[], where result[0] --> a, and result[1] --> b.<P><DD><DL><DT><B>Parameters:</B><DD><CODE>data</CODE> - the data.<DD><CODE>series</CODE> - the series (zero-based index).<DT><B>Returns:</B><DD>The parameters.</DL></DD></DL><HR><A NAME="getPowerRegression(double[][])"><!-- --></A><H3>getPowerRegression</H3><PRE>public static double[] <A HREF="../../../../src-html/org/jfree/data/statistics/Regression.html#line.151"><B>getPowerRegression</B></A>(double[][] data)</PRE><DL><DD>Returns the parameters 'a' and 'b' for an equation y = ax^b, fitted to the data using a power regression equation. The result is returned as an array, where double[0] --> a, and double[1] --> b.<P><DD><DL><DT><B>Parameters:</B><DD><CODE>data</CODE> - the data.<DT><B>Returns:</B><DD>The parameters.</DL></DD></DL><HR><A NAME="getPowerRegression(org.jfree.data.xy.XYDataset, int)"><!-- --></A><H3>getPowerRegression</H3><PRE>public static double[] <A HREF="../../../../src-html/org/jfree/data/statistics/Regression.html#line.195"><B>getPowerRegression</B></A>(<A HREF="../../../../org/jfree/data/xy/XYDataset.html" title="interface in org.jfree.data.xy">XYDataset</A> data, int series)</PRE><DL><DD>Returns the parameters 'a' and 'b' for an equation y = ax^b, fitted to the data using a power regression equation. The result is returned as an array, where double[0] --> a, and double[1] --> b.<P><DD><DL><DT><B>Parameters:</B><DD><CODE>data</CODE> - the data.<DD><CODE>series</CODE> - the series to fit the regression line against.<DT><B>Returns:</B><DD>The parameters.</DL></DD></DL><!-- ========= END OF CLASS DATA ========= --><HR><!-- ======= START OF BOTTOM NAVBAR ====== --><A NAME="navbar_bottom"><!-- --></A><A HREF="#skip-navbar_bottom" 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_bottom_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/Regression.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-files/index-1.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../org/jfree/data/statistics/MeanAndStandardDeviation.html" title="class in org.jfree.data.statistics"><B>PREV CLASS</B></A> <A HREF="../../../../org/jfree/data/statistics/SimpleHistogramBin.html" title="class in org.jfree.data.statistics"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html?org/jfree/data/statistics/Regression.html" target="_top"><B>FRAMES</B></A> <A HREF="Regression.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | 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_bottom"></A><!-- ======== END OF BOTTOM NAVBAR ======= --><HR></BODY></HTML>⌨️ 快捷键说明
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