Re: [Numpy-discussion] Best fit linear piecewise function?
My students are using this and seem to like it: https://jekel.me/piecewise_linear_fit_py/about.html
Date: Tue, 1 Jun 2021 17:22:52 -0700 From: Chris Barker <chris.barker@noaa.gov> To: Discussion of Numerical Python <numpy-discussion@python.org> Subject: [Numpy-discussion] Best fit linear piecewise function? Message-ID: <CALGmxELHB3MUT= i58WZ0dL_292GvntmFRte88ik98h2NqT1YJw@mail.gmail.com> Content-Type: text/plain; charset="utf-8"
Do any of you know of code for finding an optimum linear piecewise fit to a set of points?
Somethin like what is described in this article:
https://www.hindawi.com/journals/mpe/2015/876862/
At a glance, that looked just hard enough to code up that I'm hoping someone has already done it :-)
-CHB
--
Christopher Barker, Ph.D. Oceanographer
Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception
Chris.Barker@noaa.gov
Hi Christopher, if you are interested in the 1d problem, you might also consider a spline fit of order 1, for example with scipy.interpolate, see [1]. Cheers Klaus [1] https://docs.scipy.org/doc/scipy/reference/tutorial/interpolate.html#spline-... On 03/06/2021 13:12, Mark Bakker wrote:
My students are using this and seem to like it:
https://jekel.me/piecewise_linear_fit_py/about.html <https://jekel.me/piecewise_linear_fit_py/about.html>
Date: Tue, 1 Jun 2021 17:22:52 -0700 From: Chris Barker <chris.barker@noaa.gov <mailto:chris.barker@noaa.gov>> To: Discussion of Numerical Python <numpy-discussion@python.org <mailto:numpy-discussion@python.org>> Subject: [Numpy-discussion] Best fit linear piecewise function? Message-ID: <CALGmxELHB3MUT=i58WZ0dL_292GvntmFRte88ik98h2NqT1YJw@mail.gmail.com <mailto:i58WZ0dL_292GvntmFRte88ik98h2NqT1YJw@mail.gmail.com>> Content-Type: text/plain; charset="utf-8"
Do any of you know of code for finding an optimum linear piecewise fit to a set of points?
Somethin like what is described in this article:
https://www.hindawi.com/journals/mpe/2015/876862/ <https://www.hindawi.com/journals/mpe/2015/876862/>
At a glance, that looked just hard enough to code up that I'm hoping someone has already done it :-)
-CHB
--
Christopher Barker, Ph.D. Oceanographer
Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception
Chris.Barker@noaa.gov <mailto:Chris.Barker@noaa.gov>
On Thu, Jun 3, 2021 at 4:43 AM Klaus Zimmermann <klaus.zimmermann@smhi.se> wrote:
if you are interested in the 1d problem, you might also consider a spline fit of order 1, for example with scipy.interpolate, see [1].
hmm, yes, that should work -- I guess it didn't dawn on me because all examples are higher order, but I'll check it out. -CHB
Cheers Klaus
[1]
https://docs.scipy.org/doc/scipy/reference/tutorial/interpolate.html#spline-...
On 03/06/2021 13:12, Mark Bakker wrote:
My students are using this and seem to like it:
https://jekel.me/piecewise_linear_fit_py/about.html <https://jekel.me/piecewise_linear_fit_py/about.html>
Date: Tue, 1 Jun 2021 17:22:52 -0700 From: Chris Barker <chris.barker@noaa.gov <mailto:chris.barker@noaa.gov>> To: Discussion of Numerical Python <numpy-discussion@python.org <mailto:numpy-discussion@python.org>> Subject: [Numpy-discussion] Best fit linear piecewise function? Message-ID:
<CALGmxELHB3MUT=i58WZ0dL_292GvntmFRte88ik98h2NqT1YJw@mail.gmail.com <mailto:i58WZ0dL_292GvntmFRte88ik98h2NqT1YJw@mail.gmail.com>> Content-Type: text/plain; charset="utf-8"
Do any of you know of code for finding an optimum linear piecewise fit to a set of points?
Somethin like what is described in this article:
https://www.hindawi.com/journals/mpe/2015/876862/ <https://www.hindawi.com/journals/mpe/2015/876862/>
At a glance, that looked just hard enough to code up that I'm hoping someone has already done it :-)
-CHB
--
Christopher Barker, Ph.D. Oceanographer
Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception
Chris.Barker@noaa.gov <mailto:Chris.Barker@noaa.gov>
On Thu, Jun 3, 2021 at 4:13 AM Mark Bakker <markbak@gmail.com> wrote:
My students are using this and seem to like it:
thanks -- that looks perfect! -CHB
Date: Tue, 1 Jun 2021 17:22:52 -0700 From: Chris Barker <chris.barker@noaa.gov> To: Discussion of Numerical Python <numpy-discussion@python.org> Subject: [Numpy-discussion] Best fit linear piecewise function? Message-ID: <CALGmxELHB3MUT= i58WZ0dL_292GvntmFRte88ik98h2NqT1YJw@mail.gmail.com> Content-Type: text/plain; charset="utf-8"
Do any of you know of code for finding an optimum linear piecewise fit to a set of points?
Somethin like what is described in this article:
https://www.hindawi.com/journals/mpe/2015/876862/
At a glance, that looked just hard enough to code up that I'm hoping someone has already done it :-)
-CHB
--
Christopher Barker, Ph.D. Oceanographer
Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception
Chris.Barker@noaa.gov
participants (3)
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Chris Barker -
Klaus Zimmermann -
Mark Bakker