Re: [Numpy-discussion] Suggestions for GSoC Projects

sp.hyp2f1(10,5,-300.5,0.5) -6.5184949735e+156 The present implementation of the function in scipy, involves one Euler Transform followed by the application of Power Series (as a and b turn negative after Euler Transform is applied once). This most probably blows up the values of function as |c|

Re: [Numpy-discussion] Suggestions for GSoC Projects

> > Typically, you need to tell mpmath to use an appropriate precision for > the evaluation: > > >>> mpmath.mp.dps = 300 > >>> float(mpmath.hyp2f1('10','5','-300.5','0.5')) > -3.8520270815239185e+32 > > Oh k! I didn't pay that much heed to it an

Re: [Numpy-discussion] Suggestions for GSoC Projects

23.02.2014 15:18, Jennifer stone kirjoitti: [clip] > I tried the same input in mpmath to check if it works there: > hyp2f1(10,5,-300.5,0.5) > >>> mpf('0.9211827166328477893913199888') > > which is the solution when we apply power series expansion. Typically, you need to tell mpmath to use an appro

Re: [Numpy-discussion] Suggestions for GSoC Projects

In an attempt to analyze the accuracy of hyp2f1, Different cases mentioned in Abramowitz ( http://people.math.sfu.ca/~cbm/aands/page_561.htm ) and also in the Thesis on 'Computation of Hypergeometric functions" (http://people.maths.ox.ac.uk/port

Re: [Numpy-discussion] Suggestions for GSoC Projects

If you are interested in the hypergeometric numerical evaluation, it's > probably a good idea to take a look at this recent master's thesis > written on the problem: > > http://people.maths.ox.ac.uk/porterm/research/pearson_final.pdf > > The th

Re: [Numpy-discussion] Suggestions for GSoC Projects

16.02.2014 23:34, Jennifer stone kirjoitti: [clip] > Yeah, many of the known failures seem to revolve around hyp2f1. An > unexplained inclination towards hypergeometric functions really > tempts me to plunge into this. If it's too risky, I can work on > this after the summers, as I would have gain

Re: [Numpy-discussion] Suggestions for GSoC Projects

On Wed, Feb 12, 2014 at 2:11 AM, Pauli Virtanen wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > Hi > > It's not so often someone wants to work on scipy.special, so you'd be > welcome to improve it :) > > That's great! Thanks a lot for your guidance. . > > - > > Spherical harmonics m

Re: [Numpy-discussion] Suggestions for GSoC Projects

Hi, 08.02.2014 06:16, Stéfan van der Walt kirjoitti: > On 8 Feb 2014 04:51, "Ralf Gommers" wrote: >> >>> Members of the dipy team would also be interested. >> >> That's specifically for the spherical harmonics topic right? > > Right. Spherical harmonics are used as bases in many of DiPy's > rec

Re: [Numpy-discussion] Suggestions for GSoC Projects

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi, 04.02.2014 20:30, jennifer stone kirjoitti: > 3. As stated earlier, we have spherical harmonic functions (with > much scope >>> for dev) we are yet to have elliptical and cylindrical harmonic >>> function, which may be developed. >> >> This sound

Re: [Numpy-discussion] Suggestions for GSoC Projects

On 8 Feb 2014 04:51, "Ralf Gommers" wrote: > >> Members of the dipy team would also be interested. > > That's specifically for the spherical harmonics topic right? Right. Spherical harmonics are used as bases in many of DiPy's reconstruction algorithms. You are right, though, that gsoc would al

Re: [Numpy-discussion] Suggestions for GSoC Projects

On Thu, Feb 6, 2014 at 11:59 AM, Stéfan van der Walt wrote: > On Tue, 04 Feb 2014 12:21:58 +0100, Ralf Gommers wrote: > > Finding a suitable mentor for whatever project Jennifer chooses is an > > important factor in the choice of project, so I have to ask: do you have > > the bandwidth to be a men

Re: [Numpy-discussion] Suggestions for GSoC Projects

On Tue, 04 Feb 2014 12:21:58 +0100, Ralf Gommers wrote: > Finding a suitable mentor for whatever project Jennifer chooses is an > important factor in the choice of project, so I have to ask: do you have > the bandwidth to be a mentor or help out this summer? I completely agree. I have time to be

Re: [Numpy-discussion] Suggestions for GSoC Projects

> > On Fri, Jan 31, 2014 at 11:34 AM, Stéfan van der Walt wrote: > >> On Fri, 31 Jan 2014 04:31:01 +0530, jennifer stone wrote: >> > 3. As stated earlier, we have spherical harmonic functions (with much >> scope >> > for dev) we are yet to have elliptical and cylindrical harmonic >> function, >> >

Re: [Numpy-discussion] Suggestions for GSoC Projects

3. As stated earlier, we have spherical harmonic functions (with much scope >> for dev) we are yet to have elliptical and cylindrical harmonic function, >> which may be developed. >> > > This sounds very doable. How much work do you think would be involved? > >> >> As Stefan so rightly pointed out,

Re: [Numpy-discussion] Suggestions for GSoC Projects

On Fri, Jan 31, 2014 at 12:01 AM, jennifer stone wrote: > With GSoC 2014 being round the corner, I hereby put up few projects for > discussion that I would love to pursue as a student. > Guidance, suggestions are cordially welcome:- > > 1. If I am not mistaken, contour integration is not supported

Re: [Numpy-discussion] Suggestions for GSoC Projects

On Fri, Jan 31, 2014 at 11:34 AM, Stéfan van der Walt wrote: > On Fri, 31 Jan 2014 04:31:01 +0530, jennifer stone wrote: > > 3. As stated earlier, we have spherical harmonic functions (with much > scope > > for dev) we are yet to have elliptical and cylindrical harmonic function, > > which may be

Re: [Numpy-discussion] Suggestions for GSoC Projects

On Thu, Jan 30, 2014 at 4:01 PM, jennifer stone wrote: > With GSoC 2014 being round the corner, I hereby put up few projects for > discussion that I would love to pursue as a student. > Guidance, suggestions are cordially welcome:- > > 1. If I am not mistaken, contour integration is not supported

Re: [Numpy-discussion] Suggestions for GSoC Projects

Hi Jennifer, On 31 January 2014 00:01, jennifer stone wrote: > With GSoC 2014 being round the corner, I hereby put up few projects for > discussion that I would love to pursue as a student. > Guidance, suggestions are cordially welcome:- > > 1. If I am not mistaken, contour integration is not

Re: [Numpy-discussion] Suggestions for GSoC Projects

On Fri, 31 Jan 2014 04:31:01 +0530, jennifer stone wrote: > 3. As stated earlier, we have spherical harmonic functions (with much scope > for dev) we are yet to have elliptical and cylindrical harmonic function, > which may be developed. As stated before, I am personally interested in seeing the s

[Numpy-discussion] Suggestions for GSoC Projects

With GSoC 2014 being round the corner, I hereby put up few projects for discussion that I would love to pursue as a student. Guidance, suggestions are cordially welcome:- 1. If I am not mistaken, contour integration is not supported by SciPy; in fact even line integrals of real functions is yet to