Statistics::ErrorPropagation version 0.01
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DESCRIPTION
A function f({X_i}) of a set of n independent stochastic variables
{X_i}={X_0, X_1, ..., X_(n-1)}
with means {x_i}={x_0, x_1, ..., x_(n-1)}
and corresponding variances {var_i}={var_0, var_1, ..., var_(n-1)},
has mean f({x_i}) and a variance var_f which is the sum
of the squared partial derivatives multiplied by the variances
var_f = (df/dx_i)**2 var_i
This package allows the propagation of errors on the variables through
various simple mathematical operations to automatically compute the error of
the function. Use it to define data each with a central (mean) value and
either the variance or standard deviation (square root of the variance),
then apply perl's mathematical operators to them to calculate your function
f. These operators are overloaded so that f automatically has the correct
variance.
INSTALLATION
To install this module type the following:
perl Makefile.PL
make
make test
make install
DEPENDENCIES
This module requires these other modules and libraries:
Carp
Test::Harness
Test::More
COPYRIGHT AND LICENCE
Copyright (c) 2002 Zbigniew Sroczynski. All rights reserved.
This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself; i.e. only under the terms of either
the Artistic License or the GNU General Public License, which may be found
in the Perl 5 source kit.
Copyright (C) 2002 Zbigniew Sroczynski