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Re: Memory error with quadratic interpolation

References (3 earlier) <8daf86cf-386c-44ae-83d5-25fb04572c00@googlegroups.com> <mailman.898.1358952056.2939.python-list@python.org> <a5662c8c-67c3-47e6-a8b7-2eddbc272657@googlegroups.com> <mailman.910.1358959906.2939.python-list@python.org> <94ef456a-af84-48fe-8007-df42c4a625c4@googlegroups.com>
Date 2013-01-24 10:30 +0000
Subject Re: Memory error with quadratic interpolation
From Oscar Benjamin <oscar.j.benjamin@gmail.com>
Newsgroups comp.lang.python
Message-ID <mailman.952.1359023458.2939.python-list@python.org> (permalink)

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On 23 January 2013 17:33, Isaac Won <winefrog@gmail.com> wrote:
> On Wednesday, January 23, 2013 10:51:43 AM UTC-6, Oscar Benjamin wrote:
>> On 23 January 2013 14:57, Isaac Won <winefrog@gmail.com> wrote:
>>
>> > On Wednesday, January 23, 2013 8:40:54 AM UTC-6, Oscar Benjamin wrote:
>>
>> Unless I've misunderstood how this function is supposed to be used, it
>> just doesn't really seem to work for arrays of much more than a few
>> hundred elements.
>>

The solution is to use UnivariateSpline. I don't know what the
difference is but it works where the other fails:

import numpy as np
from scipy.interpolate import UnivariateSpline
x = np.array(10000 * [0.0], float)
indices = np.arange(len(x))
interp = UnivariateSpline(indices, x, k=2)
print(interp(1.5))


Oscar

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Thread

Memory error with quadratic interpolation Isaac Won <winefrog@gmail.com> - 2013-01-22 20:06 -0800
  Re: Memory error with quadratic interpolation Ulrich Eckhardt <ulrich.eckhardt@dominolaser.com> - 2013-01-23 09:55 +0100
    Re: Memory error with quadratic interpolation Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2013-01-23 10:08 +0000
      Re: Memory error with quadratic interpolation Isaac Won <winefrog@gmail.com> - 2013-01-23 06:26 -0800
      Re: Memory error with quadratic interpolation Isaac Won <winefrog@gmail.com> - 2013-01-23 06:26 -0800
      Re: Memory error with quadratic interpolation Isaac Won <winefrog@gmail.com> - 2013-01-23 06:28 -0800
        Re: Memory error with quadratic interpolation Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2013-01-23 14:40 +0000
          Re: Memory error with quadratic interpolation Isaac Won <winefrog@gmail.com> - 2013-01-23 06:57 -0800
            Re: Memory error with quadratic interpolation Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2013-01-23 16:51 +0000
              Re: Memory error with quadratic interpolation Isaac Won <winefrog@gmail.com> - 2013-01-23 09:33 -0800
                Re: Memory error with quadratic interpolation Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2013-01-24 10:30 +0000
              Re: Memory error with quadratic interpolation Isaac Won <winefrog@gmail.com> - 2013-01-23 09:33 -0800
          Re: Memory error with quadratic interpolation Isaac Won <winefrog@gmail.com> - 2013-01-23 06:57 -0800
      Re: Memory error with quadratic interpolation Isaac Won <winefrog@gmail.com> - 2013-01-23 06:28 -0800
    Re: Memory error with quadratic interpolation Isaac Won <winefrog@gmail.com> - 2013-01-23 06:47 -0800
  Re: Memory error with quadratic interpolation Isaac Won <winefrog@gmail.com> - 2013-01-23 06:24 -0800

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