Re: [gmx-users] principal moments of ellipsoid

2011-05-10 Thread Justin A. Lemkul
lammps lammps wrote: Yes, However, what does the data in axis1.dat, axis2.dat, axis3.dat and moi.dat mean? Should I put the center-of-mass of the molecule in the origin when using the g_principal command? It seems that the inertia is calculated relative to the origin. May be my underst

Re: [gmx-users] principal moments of ellipsoid

2011-05-10 Thread lammps lammps
Yes, However, what does the data in axis1.dat, axis2.dat, axis3.dat and moi.dat mean? Should I put the center-of-mass of the molecule in the origin when using the g_principal command? It seems that the inertia is calculated relative to the origin. May be my understanding wrong. -- wade -- gmx-

Re: [gmx-users] principal moments of ellipsoid

2011-05-10 Thread Justin A. Lemkul
lammps lammps wrote: Not R_x, R_y, and R_z. What I want to obtain are the three three principal moments of the ellipsoidal macromolecule. They are different quantities. Then isn't g_principal the more appropriate tool, rather than g_gyrate? -Justin 2011/5/10 Erik Marklund mailt

Re: [gmx-users] principal moments of ellipsoid

2011-05-10 Thread lammps lammps
Not R_x, R_y, and R_z. What I want to obtain are the three three principal moments of the ellipsoidal macromolecule. They are different quantities. 2011/5/10 Erik Marklund > Mark Abraham skrev 2011-05-10 12.31: > > On 10/05/2011 8:23 PM, lammps lammps wrote: >> >>> Hi, >>> I want to study

Re: [gmx-users] principal moments of ellipsoid

2011-05-10 Thread Erik Marklund
Mark Abraham skrev 2011-05-10 12.31: On 10/05/2011 8:23 PM, lammps lammps wrote: Hi, I want to study the shape change of a macromolecule which seems like a ellipsoid. So, I need obtain the three principal moments of the molecules. Is the command of g_gyrate helpful for me? The sum of the thre

Re: [gmx-users] principal moments of ellipsoid

2011-05-10 Thread ahmet yıldırım
Hi, BioVEC is a tool for visualizing molecular dynamics simulation data while allowing coarse-grained residues to berendered as ellipsoids. http://www.phas.ubc.ca/~steve/BioVEC/BioVECindex.html 2011/5/10 Mark Abraham > On 10/05/2011 8:23 PM, lammps lammps wrote: > >> Hi, >> I want to study the

Re: [gmx-users] principal moments of ellipsoid

2011-05-10 Thread Mark Abraham
On 10/05/2011 8:23 PM, lammps lammps wrote: Hi, I want to study the shape change of a macromolecule which seems like a ellipsoid. So, I need obtain the three principal moments of the molecules. Is the command of g_gyrate helpful for me? The sum of the three principal moments should be equal t

[gmx-users] principal moments of ellipsoid

2011-05-10 Thread lammps lammps
Hi, I want to study the shape change of a macromolecule which seems like a ellipsoid. So, I need obtain the three principal moments of the molecules. Is the command of g_gyrate helpful for me? The sum of the three principal moments should be equal to the . However, I used the command g_gyrate -