Re: Interpolacja Liniowa

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#27542

From: Piotr Chamera
Date: Fri, 25 Jun 2010 21:04

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W dniu 2010-06-25 20:51, jcubic pisze:
> Próbuje napisać funkcję do interpolacji liniowej, taką która przyjmuje
> cztery parametry x1, y1, x2, y2 i zwracającą funkcję f(x).
>
> Próbowałem taki kod
>
> def get_interpolated(x1, y1, x2, y2):
>      'function for linear interpolation.'
>      a = (y2 - y1) / (x2 - x1)
>      b = ((-x1) * (y2 - y1) - (x2 - x1) * (-y1)) / (x2 - x1)
>      def interpolated(x):
>          return a * x + b
>      return interpolated

ale co nie działa?

 >>> f = get_interpolated(0, 0, 1, 1)
 >>> f
<function interpolated at 0x00C57DB0>
 >>> f(2)
2
 >>> f(3)
3

 >>> g = get_interpolated(0, 0, 1, 2)
 >>> g(2)
4
 >>> g(-23)
-46

 >>> get_interpolated(0, 1, 1, 2)(10)
11

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From: Piotr Chamera <piotr_chamera@poczta.onet.pl>
Newsgroups: pl.comp.lang.python
Subject: Re: Interpolacja Liniowa
Date: Fri, 25 Jun 2010 23:04:36 +0200
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