Re: mutivariable interpolation functions
- To: mathgroup at smc.vnet.net
- Subject: [mg29157] Re: [mg29152] mutivariable interpolation functions
- From: steffenz at server2.fo.fh-koeln.de
- Date: Fri, 1 Jun 2001 04:15:22 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Hi! I'm not quite shure about Your problem, but I think "a list of a list of a list" as you say is 4D objekt. ListInterpolation[] works only on a two dimensional grid (a list of lists). Maybe I need more info to understand Your problem. Steffen > Date: Wed, 30 May 2001 23:28:38 -0400 (EDT) > From: adam_jurhs at xontech.com (atjurhs) To: mathgroup at smc.vnet.net > To: mathgroup at smc.vnet.net > Subject: [mg29157] [mg29152] mutivariable interpolation functions > Essentially, I have a list of a list of a list (data in three dimensions) > and I want to be able to create an interpolation function (surface) for > the data, so that later on I can calculate derivatives over the surface > and that sort of stuff. The built-in ListInterpolation function seems to > be working fine (so I think), but working with the resulting interpolated > function of three variables seems to be where I'm stuck. I don't know how > to compute the derivatives along anyone of the axis (or the gradient) > because I don't know what variables the ListInterpolation function utilized. > I can email the Mathematica notebook to anyone who would be willing to help. > > Dipl.-Ing. Steffen Zozgornik Institut für Licht- und Bautechnik an der Fachhochschule Köln Lustheide 85 D - 51 427 Bergisch Gladbach Tel.: +49 - 2204 - 30 14 - 0