NAME
Math::Business::ATR - Technical Analysis: Average True Range
SYNOPSIS
use Math::Business::ATR;
my $atr = new Math::Business::ATR;
$atr->set_days(14);
# alternatively/equivilently
my $atr = new Math::Business::ATR(14);
# or to just get the recommended model ... (14)
my $atr = Math::Business::ATR->recommended;
my @data_points = (
[ 5, 3, 4 ], # high, low, close
[ 6, 4, 5 ],
[ 5, 4, 4.5 ],
);
# choose one:
$atr->insert( @data_points );
$atr->insert( $_ ) for @data_points;
my $atr = $atr->query;
if( defined( my $q = $atr->query ) ) {
print "ATR: $q.\n";
} else {
print "ATR: n/a.\n";
}RESEARCHER
The ATR was designed by J. Welles Wilder Jr circa 1978.
The ATR is meant to be a measure of the volatility of the stock price. It does not provide any indication of the direction of the moves, only how erratic the moves may be.
Wilder felt that large ranges meant traders are willing to continue bidding up (or selling down) a stock.
AUTHOR
Paul Miller <jettero@cpan.org>
I am using this software in my own projects... If you find bugs, please please please let me know. There is a mailing list with very light traffic that you might want to join: http://groups.google.com/group/stockmonkey/.
COPYRIGHT
Copyright © 2013 Paul Miller
LICENSE
This is released under the Artistic License. See perlartistic.
SEE ALSO
perl(1), Math::Business::StockMonkey, Math::Business::StockMonkey::FAQ, Math::Business::StockMonkey::CookBook