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Moving Averages

VB icon
Submitted on: 10/1/2003 4:44:32 PM
By: Mike Brownbill 
Level: Beginner
User Rating: Unrated
Compatibility:5.0 (all versions), Active Perl specific, 4.0 (all versions), 3.0 (all versions), Pre 3.0

Users have accessed this code 533 times.
     This code calculates moving averages in a data set. I just knocked it up now while doing my maths homework :) You just provide the first "x" numbers ("x" being the number of points in your moving average) and it works from there, shifting the obselete value off the front and pushing the new one on the end. I find this a lot less tedious than re-punching the entire equation into a calculator every time :)
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By using this code, you agree to the following terms...   
1) You may use this code in your own programs (and may compile it into a program and distribute it in compiled format for languages that allow it) freely and with no charge.   
2) You MAY NOT redistribute this code (for example to a web site) without written permission from the original author. Failure to do so is a violation of copyright laws.   
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    = Name: Moving Averages
    = Description:This code calculates movin
    =     g averages in a data set. I just knocked
    =     it up now while doing my maths homework 
    =     :) You just provide the first "x" number
    =     s ("x" being the number of points in you
    =     r moving average) and it works from ther
    =     e, shifting the obselete value off the f
    =     ront and pushing the new one on the end.
    =     I find this a lot less tedious than re-p
    =     unching the entire equation into a calcu
    =     lator every time :)
    = By: Mike Brownbill
    =This code is copyrighted and has    = limited warranties.Please see http://w
    =     ww.Planet-Source-Code.com/vb/scripts/Sho
    =     wCode.asp?txtCodeId=545&lngWId;=6    =for details.    =**************************************
    print "Please enter the initial values separated by spaces: ";
    chomp($inval = <STDIN>);#Get the initial values
    @data = split(/ /,$inval);#Split them on the spaces
    unless($nval eq 'exit'){#Unless we want to quit 
    print "Average of ";
    for $item(@data){
    	print $item.",";#Print the current data set
    print " : ".average(@data)."\n"; #Print the average
    shift @data;#Remove the unwanted value
    print "Next Value: ";
    chomp($nval = <STDIN>);
    unless($nval eq 'exit'){
    	push(@data,$nval); #Add the new value
    sub average {
    	@avd = @_;
    	$els = 0;
    	$total = 0;
    	for $element(@avd){
    		$total += $element;#Add them all together
    		$els++;#Increment the counter
    	$av = $total / $els;#Calculate the mean value
    	return $av;#Return it

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