Re: FunctionInterpolation and NIntegrate
- To: mathgroup at smc.vnet.net
- Subject: [mg120825] Re: FunctionInterpolation and NIntegrate
- From: Heike Gramberg <heike.gramberg at gmail.com>
- Date: Fri, 12 Aug 2011 05:03:33 -0400 (EDT)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- References: <201108111155.HAA09067@smc.vnet.net>
It looks like FunctionInterpolation tries to evaluate f[r] symbolically first before substituting numeric values for r (similar to for example NIntegrate) which produces an error message since f[r] only makes sense for numeric values of r. To get rid of the message you can redefine f according to Clear[f] f[r_?NumericQ] := NIntegrate[r + s , {s, 0, 1}] thus avoiding f[r] from being evaluated for non-numeric values of r. Heike. On 11 Aug 2011, at 13:55, gac wrote: > f[r_] := NIntegrate[r + s , {s, 0, 1}] > g = FunctionInterpolation[f[r], {r, 0, 1}] > > Can anyone explain why this works, yet I get the msg: > > NIntegrate::inumr: "The integrand r+s has evaluated to non-numerical values for all sampling points in the region with boundaries {{0,1}}." > > Can the statements be reformed to avoid the msg? > > Thanks. > > Glenn >
- References:
- FunctionInterpolation and NIntegrate
- From: gac <g.crlsn@gmail.com>
- FunctionInterpolation and NIntegrate