Mathematica 9 is now available
Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2003
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2003

[Date Index] [Thread Index] [Author Index]

Search the Archive

Interpolation with random nodes

  • To: mathgroup at smc.vnet.net
  • Subject: [mg44754] Interpolation with random nodes
  • From: "Wojtek" <a_d_u_n at o2.pl>
  • Date: Tue, 25 Nov 2003 00:45:22 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

Hello,

I want to interpolate function with a few different sets of nodes.
One of them are random ones. I have made the list of nodes and my function's
values:

(n is given)

data1=Table[{e=Random[]*2-1,ArcTan(x,0.,n}]

and I have a list: {{x_0,f(x_0)},{x_1,f(x_1)}...}

I use the following formula to calculate my function

L(x) = SUM(j=0..n) f(x_j) * Lambda(j,x)

And I need to extract these values from my list.

and I want to define two functions

y[n] - this returns the f(x_n) from my list
x[n] - this returns the x_n from my list

how can I do it in mathematica?

Thank you for any help

Wojtek








  • Prev by Date: Re: Defining Operators
  • Next by Date: partial differential
  • Previous by thread: Bad Command or FIlename (v2.2.2DOS)
  • Next by thread: Re: Interpolation with random nodes