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>

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