Message-ID: <427B37EB.4050007@stats.uwo.ca>
Date: 2005-05-06T09:24:59Z
From: Duncan Murdoch
Subject: Numerical Derivative / Numerical Differentiation of unkno wn funct ion
In-Reply-To: <BDF571786CAD224F966FEB86BEDED52F1433DABD@elon12p32001.csfp.co.uk>
Uzuner, Tolga wrote:
> Ah... I searched for half an hour for this function... you know, the help function in R could really be a lot better...
help() assumes you know the name of the thing you're looking for. You
should be using help.search('derivative'), which for me gave
width.SJ(MASS) Bandwidth Selection by Pilot Estimation of
Derivatives
D(stats) Symbolic and Algorithmic Derivatives of Simple
Expressions
numericDeriv(stats) Evaluate derivatives numerically
How could that be better?
Duncan Murdoch