Math::Derivative.3pm

Langue: en

Autres versions - même langue

Version: 2007-08-17 (debian - 07/07/09)

Section: 3 (Bibliothèques de fonctions)

Sommaire

NAME

Math::Derivative - Numeric 1st and 2nd order differentiation

SYNOPSIS

     use Math::Derivative qw(Derivative1 Derivative2);
     @dydx=Derivative1(\@x,\@y);
     @d2ydx2=Derivative2(\@x,\@y);
     @d2ydx2=Derivative2(\@x,\@y,$yp0,$ypn);

DESCRIPTION

This Perl package exports functions for performing numerical first (Derivative1) and second Derivative2) order differentiation on vectors of data. They both take references to two arrays containing the x and y ordinates of the data and return an array of the 1st or 2nd derivative at the given x ordinates. Derivative2 may optionally be given values to use for the first dervivative at the start and end points of the data - otherwiswe 'natural' values are used.

HISTORY

$Log: Derivative.pm,v $ Revision 1.1 1995/12/26 16:26:59 willijar Initial revision

BUGS

Let me know.

AUTHOR

John A.R. Williams <J.A.R.Williams@aston.ac.uk>