Re: Values from InterpolatingFunction
- To: mathgroup@smc.vnet.net
- Subject: [mg11853] Re: Values from InterpolatingFunction
- From: Paul Abbott <paul@physics.uwa.edu.au>
- Date: Fri, 3 Apr 1998 03:45:17 -0500
- Organization: University of Western Australia
- References: <6fskub$gsc@smc.vnet.net>
Volker Doerr wrote:
> I have the following
>
> InterpolatingFunction[{{0.,365.}},<>][t]
>
> produced by Function D from another InterpolatingFunction, and want
> simply to get the approximate values at specific points. I cannot find
> a direct solution, probably because the function has symbolic form.
InterpolatingFunction[{{0.,365.}},<>][t] /. t -> 3
will give you the value at t == 3. Alternatively, you can avoid
including the dummy argument t as follows:
In[1]:= Table[i\^2, {i, 5}]\)
Out[1]= {1,4,9,16,25}
In[2]:= f=Interpolation[%];
In[3]:= g=f';
In[4]:= g[3]
Out[4]= 6
Cheers,
Paul
____________________________________________________________________
Paul Abbott Phone: +61-8-9380-2734
Department of Physics Fax: +61-8-9380-1014
The University of Western Australia Nedlands WA 6907
mailto:paul@physics.uwa.edu.au AUSTRALIA
http://www.pd.uwa.edu.au/~paul
God IS a weakly left-handed dice player
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