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Utils (Java Machine Learning Library 0.0.11)
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nz.ac.waikato.cs.weka</FONT>
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Class Utils</H2>
<PRE>
java.lang.Object
<IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><B>nz.ac.waikato.cs.weka.Utils</B>
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<DT><PRE>public final class <B>Utils</B><DT>extends java.lang.Object</DL>
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<P>
Class implementing some simple utility methods.
<P>
<P>
<DL>
<DT><B>Version:</B></DT>
<DD>$Revision: 1.53 $</DD>
<DT><B>Author:</B></DT>
<DD>Eibe Frank, Yong Wang, Len Trigg, Julien Prados</DD>
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<CODE>static double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../nz/ac/waikato/cs/weka/Utils.html#log2">log2</A></B></CODE>
<BR>
The natural logarithm of 2.</TD>
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<CODE>static double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../nz/ac/waikato/cs/weka/Utils.html#SMALL">SMALL</A></B></CODE>
<BR>
The small deviation allowed in double comparisons</TD>
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<TD><CODE><B><A HREF="../../../../../nz/ac/waikato/cs/weka/Utils.html#Utils()">Utils</A></B>()</CODE>
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<CODE>static java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../nz/ac/waikato/cs/weka/Utils.html#arrayToString(java.lang.Object)">arrayToString</A></B>(java.lang.Object array)</CODE>
<BR>
Returns the given Array in a string representation.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../nz/ac/waikato/cs/weka/Utils.html#backQuoteChars(java.lang.String)">backQuoteChars</A></B>(java.lang.String string)</CODE>
<BR>
Converts carriage returns and new lines in a string into \r and \n.</TD>
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<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="../../../../../nz/ac/waikato/cs/weka/Utils.html#checkForRemainingOptions(java.lang.String[])">checkForRemainingOptions</A></B>(java.lang.String[] options)</CODE>
<BR>
Checks if the given array contains any non-empty options.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../nz/ac/waikato/cs/weka/Utils.html#convertNewLines(java.lang.String)">convertNewLines</A></B>(java.lang.String string)</CODE>
<BR>
Converts carriage returns and new lines in a string into \r and \n.</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../nz/ac/waikato/cs/weka/Utils.html#correlation(double[], double[], int)">correlation</A></B>(double[] y1,
double[] y2,
int n)</CODE>
<BR>
Returns the correlation coefficient of two double vectors.</TD>
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<CODE>static java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../nz/ac/waikato/cs/weka/Utils.html#doubleToString(double, int)">doubleToString</A></B>(double value,
int afterDecimalPoint)</CODE>
<BR>
Rounds a double and converts it into String.</TD>
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<CODE>static java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../nz/ac/waikato/cs/weka/Utils.html#doubleToString(double, int, int)">doubleToString</A></B>(double value,
int width,
int afterDecimalPoint)</CODE>
<BR>
Rounds a double and converts it into a formatted decimal-justified String.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../nz/ac/waikato/cs/weka/Utils.html#eq(double, double)">eq</A></B>(double a,
double b)</CODE>
<BR>
Tests if a is equal to b.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static java.lang.Class</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../nz/ac/waikato/cs/weka/Utils.html#getArrayClass(java.lang.Class)">getArrayClass</A></B>(java.lang.Class c)</CODE>
<BR>
Returns the basic class of an array class (handles multi-dimensional arrays).</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../nz/ac/waikato/cs/weka/Utils.html#getArrayDimensions(java.lang.Class)">getArrayDimensions</A></B>(java.lang.Class array)</CODE>
<BR>
Returns the dimensions of the given array.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../nz/ac/waikato/cs/weka/Utils.html#getArrayDimensions(java.lang.Object)">getArrayDimensions</A></B>(java.lang.Object array)</CODE>
<BR>
Returns the dimensions of the given array.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../nz/ac/waikato/cs/weka/Utils.html#getFlag(char, java.lang.String[])">getFlag</A></B>(char flag,
java.lang.String[] options)</CODE>
<BR>
Checks if the given array contains the flag "-Char".</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../nz/ac/waikato/cs/weka/Utils.html#getFlag(java.lang.String, java.lang.String[])">getFlag</A></B>(java.lang.String flag,
java.lang.String[] options)</CODE>
<BR>
Checks if the given array contains the flag "-String".</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../nz/ac/waikato/cs/weka/Utils.html#getOption(char, java.lang.String[])">getOption</A></B>(char flag,
java.lang.String[] options)</CODE>
<BR>
Gets an option indicated by a flag "-Char" from the given array of strings.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../nz/ac/waikato/cs/weka/Utils.html#getOption(java.lang.String, java.lang.String[])">getOption</A></B>(java.lang.String flag,
java.lang.String[] options)</CODE>
<BR>
Gets an option indicated by a flag "-String" from the given array of strings.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../nz/ac/waikato/cs/weka/Utils.html#getOptionPos(char, java.lang.String[])">getOptionPos</A></B>(char flag,
java.lang.String[] options)</CODE>
<BR>
Gets the index of an option or flag indicated by a flag "-Char" from the given array of strings.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../nz/ac/waikato/cs/weka/Utils.html#getOptionPos(java.lang.String, java.lang.String[])">getOptionPos</A></B>(java.lang.String flag,
java.lang.String[] options)</CODE>
<BR>
Gets the index of an option or flag indicated by a flag "-String" from the given array of strings.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../nz/ac/waikato/cs/weka/Utils.html#gr(double, double)">gr</A></B>(double a,
double b)</CODE>
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