Re: [OpenBabel-Devel] Modest Proposal - Gen3D won't do conformer searching

2018-06-14 Thread David van der Spoel
Den 2018-06-15 kl. 01:20, skrev Geoffrey Hutchison: Hi, One of the GSoC projects this summer is an improved fragment-based coordinate generation method. While that's going, I've been reading a lot of papers on 3D coordinate generation. As near as I can tell, no other program attempts to do a

Re: [OpenBabel-Devel] Modest Proposal - Gen3D won't do conformer searching

2018-06-14 Thread Koes, David
Not optimizing will result in a lousy conformer. The default should not generate poor bond lengths or angles. I’m less concerned about torsions. -Dave > On Jun 14, 2018, at 5:20 PM, Geoffrey Hutchison > wrote: > > Hi, > > One of the GSoC projects this summer is an improved fragment-based coo

Re: [OpenBabel-Devel] Implementation of s-type Slater orbitals in open babel

2018-06-14 Thread Geoffrey Hutchison
> I know that Open Babel already has several charge models, but none are > documented currently, and so I have no clue what to do with them except > calculate the values and write them out. That's probably a matter for me to improve the documentation. Generally people assign charges for force f

[OpenBabel-Devel] Modest Proposal - Gen3D won't do conformer searching

2018-06-14 Thread Geoffrey Hutchison
Hi, One of the GSoC projects this summer is an improved fragment-based coordinate generation method. While that's going, I've been reading a lot of papers on 3D coordinate generation. As near as I can tell, no other program attempts to do a conformer search as part of the 3D generation. Every

Re: [OpenBabel-Devel] Implementation of s-type Slater orbitals in open babel

2018-06-14 Thread Noel O'Boyle
Hi Mohammad, Just to take a step back, could you describe how users of Open Babel will benefit from this? That is, what they might use these charges for? I know that Open Babel already has several charge models, but none are documented currently, and so I have no clue what to do with them except c

[OpenBabel-Devel] Implementation of s-type Slater orbitals in open babel

2018-06-14 Thread Mohammad Mehdi Ghahremanpour
Open Babel developers, We are planning to implement a library of coulomb integrals for Slater- and Gaussian-type charges into open babel. We have implemented the Slater integrals (analytical solutions) in two different versions. The first version uses an arbitrary high precision (using the CLN