RE: Values from InterpolatingFunction
- To: mathgroup@smc.vnet.net
- Subject: [mg11855] RE: [mg11847] Values from InterpolatingFunction
- From: "jmt" <jmthomas@cybercable.tm.fr>
- Date: Fri, 3 Apr 1998 03:45:19 -0500
Try this:
Here is a possible definition for an interpolating function:
d=Sort@Table[{Random[Real,{0,0.365}],Random[]},{10}]
f[x_]=(Interpolation@d)[x]
Here is the derivative:
g[x_]=D[f[x],x]
Here is a list of points (might be outside the definition domain)
sp=Table[Random[Real,{0,0.365}],{5}] Here are the values at these
points: Map[g,sp]
Hope this helps,
**************************************** Jean-Marie THOMAS
Conseil et Audit en Inginierie de Calcul Strasbourg, France
**************************************** -----Original Message-----
From: Volker Doerr [mailto:vd@cascade.de] To: mathgroup@smc.vnet.net
Subject: [mg11855] [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