Re: [ccp4bb] Program to fill unitcell randomly

2008-12-01 Thread Edward A. Berry
Ethan A Merritt wrote: On Friday 28 November 2008, Mueller, Juergen-Joachim wrote: Dear all, does anybody know a program to fill an unit cell a,b,c randomly by an arbitrary number of spheres (atoms)? First you would need to define random. Uniform density throughout the lattice? Uniform

Re: [ccp4bb] Program to fill unitcell randomly

2008-12-01 Thread Ethan Merritt
On Monday 01 December 2008 10:28:34 Edward A. Berry wrote: Ethan A Merritt wrote: On Friday 28 November 2008, Mueller, Juergen-Joachim wrote: Dear all, does anybody know a program to fill an unit cell a,b,c randomly by an arbitrary number of spheres (atoms)? First you would need to

Re: [ccp4bb] Program to fill unitcell randomly

2008-12-01 Thread Ethan Merritt
On Monday 01 December 2008 15:07:56 Edward A. Berry wrote: Thanks, Ethan, For your third point- I realized (after sending) that the distribution would be stretched along the long axis- but actually I'm having a hard time coming to grips with that conceptually- if there are n atoms in the

Re: [ccp4bb] Program to fill unitcell randomly

2008-12-01 Thread Daniel Anderson
(I don't remember the motivation for the original question.) Shake-and-Bake used to generate random atoms in an asymmetric unit, and the program kept the atoms spaced by at least a bond length. Since PDB entry 2erl, I am not up to date on Shake-and-Bake's current set of tricks. The crystal

[ccp4bb] Program to fill unitcell randomly

2008-11-28 Thread Mueller, Juergen-Joachim
Dear all, does anybody know a program to fill an unit cell a,b,c randomly by an arbitrary number of spheres (atoms)? Thank you for help, Juergen

Re: [ccp4bb] Program to fill unitcell randomly

2008-11-28 Thread Ethan A Merritt
On Friday 28 November 2008, Mueller, Juergen-Joachim wrote: Dear all, does anybody know a program to fill an unit cell a,b,c randomly by an arbitrary number of spheres (atoms)? First you would need to define random. Uniform density throughout the lattice? Uniform distribution of