Re: Remove points from InterpolatingFunction

*To*: mathgroup at smc.vnet.net*Subject*: [mg109800] Re: Remove points from InterpolatingFunction*From*: dh <dh at metrohm.com>*Date*: Tue, 18 May 2010 02:13:44 -0400 (EDT)*References*: <hsr87v$bc1$1@smc.vnet.net>

Hi Frank, I assume you do not have the original points, otherwise you would simply delete some points and make a new function from the rest. Well, we may get the points from the function itself. E.g a one dimensional case: d = RandomReal[{-1, 1}, {5}]; f = Interpolation[d] We may get the x and y values from: f[[3,1]] f[[4,3]] Having the points, delete the bad ones and use Interpolation to make a new one. Daniel Am 17.05.2010 13:10, schrieb Frank Breitling: > Hello, > > I have an interpolating function with a small interval of low accuracy. > Therefore I would like to remove all points in this interval. > I already tried to overwrite the interval using Piecewise and Condition > (/;). However a so defined function causes problems in my later > calculations due to its higher complexity. > Therefore I would like to keep the original InterpolatingFuction and > only remove the problematic points. > > How can I do this? > > Kind regards > > Frank > -- Daniel Huber Metrohm Ltd. Oberdorfstr. 68 CH-9100 Herisau Tel. +41 71 353 8585, Fax +41 71 353 8907 E-Mail:<mailto:dh at metrohm.com> Internet:<http://www.metrohm.com>