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Re: Funding the Global Minimum Using IDL [message #93920 is a reply to message #93915]

Thu, 24 November 2016 02:17

Sergey Anfinogentov is currently offline

Sergey Anfinogentov
Messages: 11
Registered: September 2012

Junior Member

Dear Maryam

As far as I know, there are no global optimisation routines in standard IDL Library.
If you you have a low-dimensinal parameter space (~ 3-4 parameters), you can find the global minimum by starting MPFIT or CURVEFIT from many (thousands) different random locations and selecting the best solution.

or alternatively, you can use global optimisation routines from Python SciPy package (https://docs.scipy.org/doc/scipy/reference/optimize.html).
The latest version of IDL can transparently call Python routines (See http://www.harrisgeospatial.com/docs/python.html).

Best Regards,
Segey

> Hello everyone,
>
> Does anyone know any routine that finds the global minimum? The mpfit routine I normally use only finds the local minimum which is not what I want here.
>
> Any help is greatly appreciated.
>
> Maryam

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[Message index]

		Funding the Global Minimum Using IDL By: Maryam on Wed, 23 November 2016 12:28
		Re: Funding the Global Minimum Using IDL By: Sergey Anfinogentov on Thu, 24 November 2016 02:17
		Re: Funding the Global Minimum Using IDL By: Maryam on Thu, 24 November 2016 13:26

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