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 mailto:chris.barker@noaa.gov> To: Discussion of Numerical Python mailto:numpy-discussion@python.org> Subject: [Numpy-discussion] Best fit linear piecewise function? Message-ID:         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 wrote:

My students are using this and seem to like it:

https://jekel.me/piecewise_linear_fit_py/about.html

thanks -- that looks perfect! -CHB

...

Date: Tue, 1 Jun 2021 17:22:52 -0700 From: Chris Barker To: Discussion of Numerical Python Subject: [Numpy-discussion] Best fit linear piecewise function? Message-ID: 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