Re: Derivative of InterpolatingFunction
- To: mathgroup at smc.vnet.net
- Subject: [mg4372] Re: Derivative of InterpolatingFunction
- From: Mark James <mrj at cs.usyd.edu.au>
- Date: Mon, 15 Jul 1996 06:51:09 -0400
- Organization: The University of Sydney
- Sender: owner-wri-mathgroup at wolfram.com
Andrei Constantinescu wrote:
>
> I have the following problem:
>
> fct = InterpolatingFunction[{{0., 3.14159}, {0., 3.14159}}, <>]
>
> ... so its an InterpolatingFunction of 2 variables .
>
> What I want now to do is the derivative of this function.
For the time being you will have to use the ND function as part
of NumericalMath`NLimit` in the standard packages.
You can use ND every time you need a derivative, or for greater
speed you may like to pre-compute the partial derivatives as
interpolating functions themselves using ND.
--
Mark James | EMAIL : mrj at cs.usyd.edu.au |
Basser Department of Computer Science, F09 | PHONE : +61-2-351-3423 |
The University of Sydney NSW 2006 AUSTRALIA | FAX : +61-2-351-3838 |
==== [MESSAGE SEPARATOR] ====