[SciPy-Dev] Doc error in scipy.optimize.fmin and missing info in ref guide

David Goldsmith d.l.goldsmith@gmail....
Mon Mar 15 18:50:34 CDT 2010


This is *very* bizarre: in View mode, Other parameters is displayed before
Returns, but in the edit frame in Edit mode, Returns is displayed above
Other parameters, but then if I preview, the preview displays it
incorrectly, even though in the edit frame, it's still correct!!!  Can
someone verify this on another platform/in another browser, please?  (Mine:
Windows Vista, Firefox 3.6).  Thanks!

DG

On Mon, Mar 15, 2010 at 4:41 PM, David Goldsmith <d.l.goldsmith@gmail.com>wrote:

> I'll look into both problems.
>
> DG
>
>
> On Mon, Mar 15, 2010 at 4:13 PM, <josef.pktd@gmail.com> wrote:
>
>> On Mon, Mar 15, 2010 at 7:05 PM, Rob Clewley <rob.clewley@gmail.com>
>> wrote:
>> > Hi,
>> >
>> > In both my old version and the one in the svn trunk there is an
>> > inconsistency in the docstring of scipy.optimize.fmin.
>> >
>> >    Other Parameters
>> >    ----------------
>> >    xtol : float
>> >        Relative error in xopt acceptable for convergence.
>> >    ftol : number
>> >        Relative error in func(xopt) acceptable for convergence.
>> >
>> > As you see from the following code snippet from the body of the
>> > function, the convergence test is in terms of absolute error for both
>> > x and f, as the sim array contains x values and fsim the function
>> > values.
>> >
>> >    if (max(numpy.ravel(abs(sim[1:]-sim[0]))) <= xtol \
>> >                and max(abs(fsim[0]-fsim[1:])) <= ftol):
>> >        break
>> >
>> > Also, optional parameters for any optimize functions are not described
>> > in the draft of the Scipy reference manual I came across while
>> > googling this issue. For instance, at
>> >
>> >
>> http://docs.scipy.org/doc/scipy/reference/generated/scipy.optimize.fmin.html#scipy.optimize.fmin
>> >
>> > fmin does not have the optional arguments detailed. If this is
>> > automatically generated is there a reason why the optional parameters
>> > aren't being shown in this document? I think they should be, IMO.
>>
>> just a guess:
>>
>> http://docs.scipy.org/scipy/docs/scipy.optimize.optimize.fmin/
>>
>> shows that Other Parameters is in the wrong order. It could be that
>> the section is ignored for rendering the html for this reason
>>
>> Josef
>>
>>
>> >
>> > -Rob
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>> >
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>
>
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