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<BR><BR><FONT COLOR="#000066"><H1><A NAME="//apple_ref/occ/cl/MovingAverage">MovingAverage</A></H1></FONT><BR>



	<blockquote><DL><DT><B>Inherits From:</B></DT>  
	<DD>SwarmObject</DD>
</DL></blockquote>





	<blockquote><DL><DT><B>Declared In:</B></DT>
	<DD>MovingAverage.h</DD>
	</DL></blockquote>

<BR><BR>


<H2>Class Description</H2>
This is a general purpose class for creating Moving Averages, either flat &quot;equally weighted&quot; moving averages or exponentially weighted moving averages

















	<P><HR WIDTH=50% ALIGN=LEFT>
	<H2>Instance Variables</H2>
	<blockquote>
	
		<CODE>int <B>width</B>;</CODE><BR>
		<CODE>int <B>numInputs</B>;</CODE><BR>
		<CODE>double *<B>maInputs</B>;</CODE><BR>
		<CODE>int <B>arrayPosition</B>;</CODE><BR>
		<CODE>double <B>sumOfInputs</B>;</CODE><BR>
		<CODE>double <B>uncorrectedSum</B>;</CODE><BR>
		<CODE>double <B>expWMA</B>;</CODE><BR>
		<CODE>double aweight, <B>bweight</B>;</CODE><BR>
	<P><TABLE>
	
		<TR><TD>width</TD><TD>number of observations used for a fixed interval moving average</TD></TR>
	
		<TR><TD>numInputs</TD><TD>number of observations that have already been inserted</TD></TR>
	
		<TR><TD>maInputs</TD><TD>historical inputs are kept in this array.</TD></TR>
	
		<TR><TD>arrayPosition</TD><TD>element of maInputs that has been most recently inserted</TD></TR>
	
		<TR><TD>sumOfInputs</TD><TD>sum of the last 'width' inputs</TD></TR>
	
		<TR><TD>uncorrectedSum</TD><TD>sum of all inputs since object was created</TD></TR>
	
		<TR><TD>expWMA</TD><TD>No description.</TD></TR>
	
		<TR><TD>bweight</TD><TD>Weights used to calculate exponentially weighted moving averages. These depend on the specified 'width' according to: bweight = -expm1(-1.0/w);aweight = 1.0 - bweight; ewma=aweight*ma(x)+bweight*x</TD></TR>
	
	</TABLE>
	</blockquote>




	<P><HR WIDTH=50% ALIGN=LEFT>
	<H2>Method Types</H2>
	<blockquote>
	
		
		<DL><DT></DT>
		
			<DD> <A HREF="#- initWidth:">- initWidth:</A></DD>
		
			<DD> <A HREF="#- initWidth:Value:">- initWidth:Value:</A></DD>
		
			<DD> <A HREF="#- getNumInputs">- getNumInputs</A></DD>
		
			<DD> <A HREF="#- getMA">- getMA</A></DD>
		
			<DD> <A HREF="#- getAverage">- getAverage</A></DD>
		
			<DD> <A HREF="#- getEWMA">- getEWMA</A></DD>
		
			<DD> <A HREF="#- addValue:">- addValue:</A></DD>
		
			<DD> <A HREF="#- drop">- drop</A></DD>
		
		</DL>
	
	</blockquote>




 

	<HR WIDTH=50% ALIGN=LEFT>
	<H2>Instance Methods</H2>
 
	
		
		<A NAME="- addValue:"></A><H3><A NAME="//apple_ref/occ/instm/MovingAverage/addValue:">addValue:</A></H3><P>
		<CODE>- (void)<B>addValue:</B>(double)<EM>x</EM>
			
		</CODE><P>
		No method description.
	
		<P><HR WIDTH=25% ALIGN=LEFT>
		<A NAME="- drop"></A><H3><A NAME="//apple_ref/occ/instm/MovingAverage/drop">drop</A></H3><P>
		<CODE>- (void)<B>drop</B>
		</CODE><P>
		No method description.
	
		<P><HR WIDTH=25% ALIGN=LEFT>
		<A NAME="- getAverage"></A><H3><A NAME="//apple_ref/occ/instm/MovingAverage/getAverage">getAverage</A></H3><P>
		<CODE>- (double)<B>getAverage</B>
		</CODE><P>
		No method description.
	
		<P><HR WIDTH=25% ALIGN=LEFT>
		<A NAME="- getEWMA"></A><H3><A NAME="//apple_ref/occ/instm/MovingAverage/getEWMA">getEWMA</A></H3><P>
		<CODE>- (double)<B>getEWMA</B>
		</CODE><P>
		No method description.
	
		<P><HR WIDTH=25% ALIGN=LEFT>
		<A NAME="- getMA"></A><H3><A NAME="//apple_ref/occ/instm/MovingAverage/getMA">getMA</A></H3><P>
		<CODE>- (double)<B>getMA</B>
		</CODE><P>
		No method description.
	
		<P><HR WIDTH=25% ALIGN=LEFT>
		<A NAME="- getNumInputs"></A><H3><A NAME="//apple_ref/occ/instm/MovingAverage/getNumInputs">getNumInputs</A></H3><P>
		<CODE>- (int)<B>getNumInputs</B>
		</CODE><P>
		No method description.
	
		<P><HR WIDTH=25% ALIGN=LEFT>
		<A NAME="- initWidth:"></A><H3><A NAME="//apple_ref/occ/instm/MovingAverage/initWidth:">initWidth:</A></H3><P>
		<CODE>- <B>initWidth:</B>(int)<EM>w</EM>
			
		</CODE><P>
		No method description.
	
		<P><HR WIDTH=25% ALIGN=LEFT>
		<A NAME="- initWidth:Value:"></A><H3><A NAME="//apple_ref/occ/instm/MovingAverage/initWidth:Value:">initWidth:Value:</A></H3><P>
		<CODE>- <B>initWidth:</B>(int)<EM>w</EM> <B>Value:</B>(double)<EM>val</EM>
			
		</CODE><P>
		No method description.
	




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Version 1.1 Copyright &copy;2001.  All Rights Reserved.  
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