Re: FunctionInterpolation and NIntegrate
- To: mathgroup at smc.vnet.net
- Subject: [mg120836] Re: FunctionInterpolation and NIntegrate
- From: Patrick Scheibe <pscheibe at trm.uni-leipzig.de>
- Date: Fri, 12 Aug 2011 05:05:35 -0400 (EDT)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- References: <201108111155.HAA09067@smc.vnet.net>
Hi,
since you don't know what exactly FunctionInterpolation makes with your
f[r] you should ensure that it is only evaluated to the rhs if the
parameter r is numeric.
f[r_?NumericQ] := NIntegrate[r + s, {s, 0, 1}]
g = FunctionInterpolation[f[r], {r, 0, 1}]
and everything should be fine.
Cheers
Patrick
On Thu, 2011-08-11 at 07:55 -0400, 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