[SciPy-User] cobyla

Sloan Lindsey sloan.lindsey@gmail....
Mon Mar 25 06:55:30 CDT 2013


How does one parse the doc string? I'm interested in having my script
know when MAXFUN is reached. I see it coming out as a print line ( I
have to use 0.7.2 because of an older centOS install), but I'd really
like my script to know that it has happened so I can tag that solution
as suspect. Is there any cute way to redirect that output into
something I can parse?

-Sloan

On Mon, Oct 1, 2012 at 9:58 PM, Ralf Gommers <ralf.gommers@gmail.com> wrote:
>
>
> On Sun, Sep 30, 2012 at 11:09 PM, The Helmbolds <helmrp@yahoo.com> wrote:
>>
>> On my system (Windows 7, Python 2.7.x and IDLE, latest SciPy), I observe
>> the following behavior with fmin_cobyla and minimize's COBYLA method.
>>
>> Case 1: When run either in the IDLE interactive shell or within an
>> enclosing Python program:
>>     1.1. The fmin_cobyla function never returns the Results dictionary,
>> and never displays it to Python's stdout. This is true regardless of the
>> function call's disp setting.
>
>
> Correct. The fmin_cobyla docstring clearly says what it returns. Result
> objects are only returned by the new interfaces in the 0.11.0 release
> (minimize, minimize_scalar, root).
>
>>     1.2. The 'minimize' function always returns the Results dictionary but
>> never displays it to Python's stdout. Again, this is true regardless of the
>> function call's disp setting.
>
>
> `disp` doesn't print the Results objects. For me it works as advertized (in
> IPython), it prints something like:
>
>    Normal return from subroutine COBYLA
>
>    NFVALS =   37   F = 8.000000E-01    MAXCV = 0.000000E+00
>    X = 1.400113E+00   1.700056E+00
>
> Ralf
>
>>
>> Case 2: When run interactively in Window's Command Prompt box:
>>     2.1 The fmin_cobyla function never returns the Result dictionary,
>> regardless of the function call's disp setting. Setting disp to True or
>> False either displays the Results dictionary in the command box or not
>> (respectively). I don't think the Results dictionary gets to the command box
>> via stdout.
>>     2.2 The 'minimize' function always returns the Result dictionary,
>> regardless of the function call's disp setting.  Setting disp to True or
>> False either displays the Results dictionary in the command box or not
>> (respectively). I don't think the Results dictionary gets to the command box
>> via stdout.
>>
>> My thanks to all who helped clarify this situation.
>>
>> Bob H
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>
>
>
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