Re: Values from InterpolatingFunction
- To: mathgroup@smc.vnet.net
- Subject: [mg11875] Re: [mg11847] Values from InterpolatingFunction
- From: "Jürgen Tischer" <jtischer@pitagoras.univalle.edu.co>
- Date: Fri, 3 Apr 1998 03:45:33 -0500
Hallo Volker,
I imagine you did something like the following:
In[72]:= f = FunctionInterpolation[x^2, {x, 0, 2}]
Out[72]= InterpolatingFunction[{{0,2.}},"<>"]
In[76]:= D[f[t],t]
Out[76]= InterpolatingFunction[{{0,2.}},"<>"][t]
and then you were stuck.
Write instead
In[77]:= g[t_]=D[f[t],t]
Out[77]= InterpolatingFunction[{{0,2.}},"<>"][t]
and use g to find your values.
J|rgen
-----Original Message-----
From: Volker Doerr <vd@cascade.de>
To: mathgroup@smc.vnet.net
Subject: [mg11875] [mg11847] Values from InterpolatingFunction
>
>Hello to all,
>
>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.
>
>Anybody out there who can help me?
>
>Thanx a lot,
>
>V o l k e r
>vd@cascade.de
>
>
>