statistics.delta.html

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<B>Constructor Detail</B></FONT></TD>
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<A NAME="Statistics.Delta()"><!-- --></A><H3>
Statistics.Delta</H3>
<PRE>
public <B>Statistics.Delta</B>()</PRE>
<DL>
<DD>Construct an initially empty set of statistics.
 All statistical values are initialized to <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Double.html#NaN" title="class or interface in java.lang"><CODE>Double.NaN</CODE></A>.
<P>
</DL>
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<A NAME="Statistics.Delta(org.geotools.math.Statistics)"><!-- --></A><H3>
Statistics.Delta</H3>
<PRE>
public <B>Statistics.Delta</B>(<A HREF="../../../org/geotools/math/Statistics.html" title="class in org.geotools.math">Statistics</A>&nbsp;delta)</PRE>
<DL>
<DD>Construct an initially empty set of statistics using the specified
 object for <A HREF="../../../org/geotools/math/Statistics.Delta.html#getDeltaStatistics()"><CODE>delta</CODE></A> statistics. This method
 allows chaining different kind of statistics objects. For example, one
 could write:
 <blockquote><pre>
 new Statistics.Delta(new Statistics.Delta());
 </pre></blockquote>
 Which would compute statistics of sample values, statistics of difference between
 consecutive sample values, and statistics of difference of difference between
 consecutive sample values. Other kinds of <A HREF="../../../org/geotools/math/Statistics.html" title="class in org.geotools.math"><CODE>Statistics</CODE></A> object could be
 chained as well.
<P>
</DL>

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<B>Method Detail</B></FONT></TD>
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<A NAME="getDeltaStatistics()"><!-- --></A><H3>
getDeltaStatistics</H3>
<PRE>
public <A HREF="../../../org/geotools/math/Statistics.html" title="class in org.geotools.math">Statistics</A> <B>getDeltaStatistics</B>()</PRE>
<DL>
<DD>Returns the statistics about difference between consecutives values.
 Given a series of sample values <var>s<sub>0</sub></var>, <var>s<sub>1</sub></var>,
 <var>s<sub>2</sub></var>, <var>s<sub>3</sub></var>..., this is statistics for
 <var>s<sub>1</sub></var>-<var>s<sub>0</sub></var>,
 <var>s<sub>2</sub></var>-<var>s<sub>1</sub></var>,
 <var>s<sub>3</sub></var>-<var>s<sub>2</sub></var>...,
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<DD><DL>
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</DD>
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<A NAME="reset()"><!-- --></A><H3>
reset</H3>
<PRE>
public void <B>reset</B>()</PRE>
<DL>
<DD>Reset the statistics to their initial <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Double.html#NaN" title="class or interface in java.lang"><CODE>NaN</CODE></A> values.
 This method reset this object state as if it was just created.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../org/geotools/math/Statistics.html#reset()">reset</A></CODE> in class <CODE><A HREF="../../../org/geotools/math/Statistics.html" title="class in org.geotools.math">Statistics</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
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<A NAME="add(double)"><!-- --></A><H3>
add</H3>
<PRE>
public void <B>add</B>(double&nbsp;sample)</PRE>
<DL>
<DD>Update statistics for the specified sample. The <A HREF="../../../org/geotools/math/Statistics.Delta.html#getDeltaStatistics()"><CODE>delta</CODE></A>
 statistics are updated with <code>sample - sample<sub>last</sub></code> value,
 where <code>sample<sub>last</sub></code> is the last value given to the previous
 call of an  method.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../org/geotools/math/Statistics.html#add(double)">add</A></CODE> in class <CODE><A HREF="../../../org/geotools/math/Statistics.html" title="class in org.geotools.math">Statistics</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>sample</CODE> - The sample value. <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Double.html#NaN" title="class or interface in java.lang"><CODE>NaN</CODE></A> values are ignored.<DT><B>See Also:</B><DD><A HREF="../../../org/geotools/math/Statistics.html#add(long)"><CODE>Statistics.add(long)</CODE></A>, 
<A HREF="../../../org/geotools/math/Statistics.html#add(org.geotools.math.Statistics)"><CODE>Statistics.add(Statistics)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="add(long)"><!-- --></A><H3>
add</H3>
<PRE>
public void <B>add</B>(long&nbsp;sample)</PRE>
<DL>
<DD>Update statistics for the specified sample. The <A HREF="../../../org/geotools/math/Statistics.Delta.html#getDeltaStatistics()"><CODE>delta</CODE></A>
 statistics are updated with <code>sample - sample<sub>last</sub></code> value,
 where <code>sample<sub>last</sub></code> is the last value given to the previous
 call of an  method.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../org/geotools/math/Statistics.html#add(long)">add</A></CODE> in class <CODE><A HREF="../../../org/geotools/math/Statistics.html" title="class in org.geotools.math">Statistics</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>sample</CODE> - The sample value.<DT><B>See Also:</B><DD><A HREF="../../../org/geotools/math/Statistics.html#add(double)"><CODE>Statistics.add(double)</CODE></A>, 
<A HREF="../../../org/geotools/math/Statistics.html#add(org.geotools.math.Statistics)"><CODE>Statistics.add(Statistics)</CODE></A></DL>
</DD>
</DL>
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<A NAME="add(org.geotools.math.Statistics)"><!-- --></A><H3>
add</H3>
<PRE>
public void <B>add</B>(<A HREF="../../../org/geotools/math/Statistics.html" title="class in org.geotools.math">Statistics</A>&nbsp;stats)
         throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/ClassCastException.html" title="class or interface in java.lang">ClassCastException</A></PRE>
<DL>
<DD>Update statistics with all samples from the specified . Invoking this
 method is equivalent (except for rounding errors)  to invoking <A HREF="../../../org/geotools/math/Statistics.Delta.html#add(double)"><CODE>add</CODE></A>
 for all samples that were added to .  The  argument
 must be an instance of .
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../org/geotools/math/Statistics.html#add(org.geotools.math.Statistics)">add</A></CODE> in class <CODE><A HREF="../../../org/geotools/math/Statistics.html" title="class in org.geotools.math">Statistics</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>stats</CODE> - The statistics to be added to ,
         or  if none.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/ClassCastException.html" title="class or interface in java.lang">ClassCastException</A></CODE> - If  is not an instance of
         .</DL>
</DD>
</DL>
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<A NAME="clone()"><!-- --></A><H3>
clone</H3>
<PRE>
public <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>clone</B>()</PRE>
<DL>
<DD>Returns a clone of this statistics.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>clone</CODE> in interface <CODE>Cloneable</CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../org/geotools/math/Statistics.html#clone()">clone</A></CODE> in class <CODE><A HREF="../../../org/geotools/math/Statistics.html" title="class in org.geotools.math">Statistics</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
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<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>&nbsp;obj)</PRE>
<DL>
<DD>Test this statistics with the specified object for equality.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../org/geotools/math/Statistics.html#equals(java.lang.Object)">equals</A></CODE> in class <CODE><A HREF="../../../org/geotools/math/Statistics.html" title="class in org.geotools.math">Statistics</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
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<A NAME="hashCode()"><!-- --></A><H3>
hashCode</H3>
<PRE>
public int <B>hashCode</B>()</PRE>
<DL>
<DD>Returns a hash code value for this statistics.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../org/geotools/math/Statistics.html#hashCode()">hashCode</A></CODE> in class <CODE><A HREF="../../../org/geotools/math/Statistics.html" title="class in org.geotools.math">Statistics</A></CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
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