 HELPPPPPPPPP!!!!!, 4th Degree polynomial equation |
HELPPPPPPPPP!!!!!
, 4th Degree polynomial equation
| Chitralekha |
 Aug 28 2004, 07:24 AM
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#1
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 Dedicated Member  Group: Members Posts: 4431 Joined: 22-October 03 Member No.: 13  |
How do I find a 4th degree polynomial passing through 1000 points (x,y) format??
Any methods to use? Vandermonde matrix doesn't work  Mathematics experts please help!!!! |
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Replies
| anurag |
Aug 28 2004, 03:42 PM
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#2
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 Dedicated Member Group: Members Posts: 1618 Joined: 18-June 04 From: Xanadu, K-Pax Planet Member No.: 550 |
use a 4th degree B-Spline function to interpolate -- will also ensure at least C^2 continuity at all intermediate points. There is recursice deboor-cox formula that you can use to evaluate interpolating functions. Socrates said, "The unexamined life is not worth living". I fear if I examined it, then according to Heisenberg uncertainty principle it would somehow change. After all, we are just particles.
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| Chitralekha |
Sep 5 2004, 02:48 AM
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#3
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Dedicated Member Group: Members Posts: 4431 Joined: 22-October 03 Member No.: 13 |
QUOTE(anurag @ Aug 28 2004, 03:12 AM) QUOTE(Chitralekha @ Aug 28 2004, 07:24 AM) How do I find a 4th degree polynomial passing through 1000 points (x,y) format?? Any methods to use? Vandermonde matrix doesn't work  Mathematics experts please help!!!! use a 4th degree B-Spline function to interpolate -- will also ensure at least C^2 continuity at all intermediate points. There is recursice deboor-cox formula that you can use to evaluate interpolating functions.  Anurag, the data is equidistant. No interpolation needed. I couldnt understand the B-spilne functions. I need to find an example of it to understand and no sites have it. Thanks for your efforts. |
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Posts in this topic
Chitralekha HELPPPPPPPPP!!!!! Aug 28 2004, 07:24 AM
myawan needs elaboration. Aug 28 2004, 07:42 AM Chitralekha See in this example, the red line passes through t... Aug 28 2004, 08:08 AM Chitralekha Something very much like this.
How do I do that? Aug 28 2004, 08:10 AM myawan still unable to understand, first image is of a fi... Aug 28 2004, 08:18 AM Chitralekha The points are scattered in 2D plane. You there is... Aug 28 2004, 08:31 AM myawan You mean that you have been given the points and y... Aug 28 2004, 08:37 AM Chitralekha
Precisely! Aug 28 2004, 08:52 AM
unni C'lekha:
Anurag, the data is equidistant. N... Sep 5 2004, 04:20 AM anurag
Chitra, check your PM.
anurag Sep 5 2004, 07:15 AM Wehshee good shot uni ! :thumbs-up: Sep 14 2004, 11:59 PM vivekpm Do share the solution if you have got it by now...... Sep 15 2004, 09:07 PM Chitralekha
No solution found yet. I dont know how to find t... Sep 17 2004, 08:28 AM |
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